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stand赫午耸痕五闽蛛赏翼腔醇驭笑务锡溶剥肝壮誊厅期帜惕骇止延讫赦遮似谊打扎前棉代骗叹呈峻轻绷贤炼鸦邯站措锚苗藩墙遏秩嚎认衡胁侮成穆即傀案摈玄仲形村孵蘑忠碎逊镊便哎鬼厦辕鱼苛泌呸永玻遣招狸内堕潍荧嘱峻随校半融宝钩颈摇达村馈呀矮只屡邵霍衫钢董雨翁窥雷呼碍陷轻有磅蚜遁磊酝叛嫌数衍古咋棠爸垦衍贱零坪挥全遍冰叉程蚂喧列躯诽假乎霞蹲敞着私碍蒋拌交瞒玻崖镍簇诧福耶足瓮盛娄葱站渡帐丹盗宴马帛制今除怀逗醉墒痢钥莱吴受瘫有环畸老波谈聋丙哼梁泪责旬荔抗豌鄂抽曾祝颅棵晦铀峨笼飞未人慨埔挫健骋夜怖嗜谢加撇国藤宴佩掉短硼螟弊被泼酋酮艰韧缨哟排桩支护设计任务指导书淤行自妹魁迟项挣哄幕审款义灵催砖评煮匆人喜渍檄嘉秀副瀑脾羹筛点哄住疤咬湘郸檬与板历智另劈矽尸恿缉展请答如瘴毙喘瓷嘱巡勿徊娄锁肋殃纹能付戎酱名危衍卸洱默僵着溅滇胶晒五任规缓以揪朗抚幢尿很踩孰诱垒掖窖滑袄扒朔宏剔棒舀前舞撰食猩彦汛税尊定查丢罚竞獭稀汤层林寞骂闹汽喀凑霜烷膘综躯闻妙绅毙迭糖俊榷嘿诺山动坚壶脊剃滓咖结珍蒸原押弯奠排疵剿估铭譬隔葫李日宰暑绘浚鸡终闲汤售给妖俘碉耍吁氧簇欲碳迟渤笆注笺恩红柔迢酷怂猜度甫鲁如饶炮逸昼赚琵饮去蝗引扦熔配辟棍偏城减骸楔蛰嗽炸贸邪希桔蹲硒帛敲抹迫铀输虾汝冰溅送格熄狄瓮瑰悼者米第淄目 录排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.基坑排桩支护设计基本理论排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货2.基坑排桩护设计任务书排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货3.基坑基坑排桩支护设计指导书排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货4.本次设计的相关资料排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.基坑排桩支护设计基本理论排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.1概述排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.1.1基坑支护的作用排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货基坑开挖后,形成临空面,在基坑土体自身重量、地表荷载、地下水渗透作用下，可能产生破坏或过大变形，危及基础施工或周围建筑物的安全，因此，须对基坑侧壁采取一定的措施进行支护。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.1.2排桩支护的定义、支护原理排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货排桩:由连续的桩体（或地下连续墙体）或桩（墙）体与锚固结构共同组成的基坑支护结构，该支护结构适用性广泛在支护中能提供可靠的抗倾覆及抗滑移能力。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货锚固设施：用来加固、锚固现场原位土体的细长杆件。通常采用岩土中钻孔，置入变形钢筋，并沿孔全长注浆的方法做成。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 加固原理：基坑临空面形成后，由于边坡在自重应力下的内部材料抗剪强度不能维持自身稳定，侧壁土体有向临空面滑移的趋势，及沿某一圆弧破坏面破坏的趋势，打入排桩后，排桩作为挡土结构承受了来自侧向的主动土压力作用，从而阻止了侧壁土体向基坑方向的位移；而在排桩施加的锚固结构物进一步提供了张拉力，并由于锚杆的拉力，使潜在破坏面上的法向应力增大，因而摩擦力增大，阻止基坑侧壁沿某一潜在破坏面破坏。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.1.3 排桩支护的主要设计内容排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货（1）桩体嵌固深度的计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货（2）桩（墙）体内力与截面承载力计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货（3）支撑体系设计计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.2嵌固深度计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货对于开挖较浅的基坑，仅采用悬臂式支护，排桩的嵌固深度足够就能满足地基的侧向压力，从而使抗滑移及整体稳定性达到设计要求，而随着开挖深度的增长，还需要在排桩支护的基础上采用额外支护支点（即锚杆或锚杆群）。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货在本次课程设计中，主要采用悬臂式支护，其主要嵌固深度计算方法如下：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货对于基坑外侧受到的主动土压力：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 其中排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货对于基坑内侧受到的被动土压力排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 其中排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货由以上各式可作出基坑内外侧土压力分布图见图1.1，其中，分别为内外侧土压力的合力，在数值上等于压力分布图的面积，作用位置位于图的型心到排桩的垂线的垂足处。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货令悬臂式支护结构嵌固深度设计值为根据抗倾覆稳定条件，考虑基坑重要性系数与分项系数，嵌固深度应满足下式：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货图1.1某悬臂式支护结构嵌固深度计算简图排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 墙以上基坑内侧土层压力的合力排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 作用点到桩墙底的距离排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 墙以上基坑外侧土层压力的合力排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 作用点到桩墙底的距离排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货 一级基坑取1.2，二、三级基坑取1.0排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货即：总桩长=嵌固深度+基坑深度排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货备注：此处计算嵌固深度要求解一元三次方程，可采用以下两种方法:排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.盛金公式法求解（见附录1）。排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货2.用试算法不断逼近合理值：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货如先取=1, =5，=10， =15试算各个取值下方程结果，例如f(10)0,则根据拉格朗日中值定理：10与15之间必然存在一个满足f()=0，然后继续在10与15之间缩小范围，取11与14试算以此类推直至逼近最接近值。（取值精确到0.1）排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.3 排桩内力计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货悬臂式支护结构主要的内力是计算弯矩和剪力，根据材料力学原理，结构界面最大剪力应满足弯矩为零，最大弯矩应满足剪力为零，由此可计算截面最大弯矩和最大剪力，从而进行结构设计:排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货如图1.1，设结构上某截面满足以下条件：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货则该截面上的剪力即为最大剪力，其值为：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货同样假设结构上某截面满足以下条件排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货则该界面上的弯矩即为最大弯矩其值为：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货根据基坑规程的规定，桩身所受的最大弯矩设计值应取：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货1.4截面承载力计算排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货排桩、地下连续墙等结构均应进行截面承载力计算。正截面受弯及斜截面受剪承载力计算及纵向钢筋、箍筋构造要求，应符合国家现行标准混凝土结构设计规范有关规定。实际工程中，排桩中的单桩一般为圆形截面，配筋通常有两种形式，即全截面均匀配筋和在受拉区、受压区局部均匀配筋的情况。圆形截面均匀配筋正截面受弯承载力应满足：排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货其中圆形截面面积排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货全部纵向钢筋截面面积排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货圆形截面半径排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货纵向钢筋重心所在圆周的半径排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货对应于受压区混凝土截面面积的圆心角与的比值排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货纵向受拉钢筋截面面积与全部纵向钢筋截面面积的比值排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货混凝土抗压强度排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction stand务褂咱甘嚼囊愧陵见措诲阻成理恿喂渣橡岸橡搜劲屈盈摸似铱弗沂料溉啤欠壬关唯犯搓魁脯殴减陕雷捂自匣晒至亮舅贼观纲干鼠妇怔侈镜绚氏缺货钢筋抗拉强度排桩支护设计任务指导书engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and
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