工期优化例题

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2015/11/2,#,工期优化例题,例题：,某工程双代号时标网络计划如图，要求,工期为,110,天，对其进行工期优化。,2.,计算工期大于要求工期的优化,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),50(20),30(18),20(15),60(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,优选系数,正常持续时间,最短持续时间,2024/11/3,2,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),50(20),30(18),20(15),60(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,1,）计算并找出初始网络计划的关键线路、关键工作；,（,2,）求出应压缩的时间,（,3,）确定各关键工作能压缩的时间；,2024/11/3,3,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),50(20),30(18),20(15),60(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,4,）选择关键工作压缩作业时间，并重新计算工期,T,c,第一次：选择工作，压缩,10,天，成为,40,天；,2024/11/3,4,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),60(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第一次：选择工作,，压缩,10,天，成为,40,天；,工期变为,150,天，和也变为关键工作。,2024/11/3,5,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),60(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第二次：选择工作，压缩,10,天，成为,50,天；,2024/11/3,6,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),50(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第二次：选择工作，压缩,10,天，成为,50,天；,工期变为,140,天，和也变为关键工作。,2024/11/3,7,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),50(30),50(25),30(20),4,3,2,3,3,50(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第三次：选择工作和，同时压缩,20,天，成为,30,天；,2024/11/3,8,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),30(30),50(25),30(20),4,3,2,3,3,30(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第三次：选择工作和，同时压缩,20,天，成为,30,天；,工期变为,120,天，关键工作没变化。,2024/11/3,9,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),40(20),30(18),20(15),30(30),50(25),30(20),4,3,2,3,3,30(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第四次：选择工作和，同时压缩,10,天，成为,30,天，,成为,20,天,；,2024/11/3,10,0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,1,2,3,4,5,6,10(8),30(20),20(18),20(15),30(30),50(25),30(20),4,3,2,3,3,30(30),1,8,2,（,4,）选择关键工作压缩时间，并重新计算工期,T,c,；,第四次：选择工作和，同时压缩,10,天，压缩为,30,天，,压缩为,20,天,；,工期变为,110,天，关键工作没变化。,2024/11/3,11,