时标网络图课件ppt.ppt

网络计划技术网络计划技术 挖基槽2挖基槽112754砌基础2挖基槽363砌基础1砌基础310回填土189回填土211回填土312挖基槽3挖基槽1挖基槽29回填土2回填土1743砌基础1216砌基础2砌基础3回填土31058挖基槽3挖基槽1挖基槽2109回填土2回填土1834砌基础1216砌基础2砌基础3回填土31157 挖土 0 41234 A B C12647835挖基槽1挖基槽2垫层2基础2回填土2基础1垫层1回填土1回填土1挖基槽221挖基槽143基础1垫层1垫层265回填土2基础2 11 1221正确画法24312双向箭头21无向箭头错误画法循环回路1234过桥法jih无箭头节点无箭尾节点kjikijk在箭线上引入引出箭线 123456ABCDEGHIJ3(3.4)4(2)5(7)8(6)1.7(2)2(1)1.5(2)2(1)4(4.4)5(3)4(5.6)6(4)3.5(4.5)6(4)1(1.7)2(1)2.5(2.9)4(2)123456ABCDEGHIJ4822566240481315191915138607122123456ABCDEGHIJ4822466240814 14806224121818126123456ABCDEGHIJ482246624081414806224121818126(6)(4)(2)(4)(3)(1)123456ABCDEGHIJ4822366230814 148052241117171161ABCDEGHIJ费率 0.2 10.3 0.5 0.2 0.8 0.7 0.5 0.2Tb261134142(6)(4)(2)(4)(3)第二次压缩成果及第三次压缩方案：1 压缩B(K=1) 2 压缩I+J(K=0.7) 压缩I+G(K=0.8+0.5=1.3)选择压缩I+J 压缩天数=Min（2,1）=1直接费=26.8+0.7=27.5 工期=16123456ABCDEGHIJ4822365220814 148052241116161161（6）（4）（4）（2）(3)第四次压缩：方案：压缩B(K=1) 2 压缩I+G(K=0.8+0.5=1.3)选择压缩B. 压缩天数=Min (8-6,2,2,5)=2直接费=27.5+2*1=29.5第三次压缩成果及第四次压缩：方案123456ABCDEGHIJ4622365220612 12603491414941(2)(1)(4)(6)(4)(2)(3)第五次压缩：方案压缩I+G (K=1.3) 压缩天数=Min(1,2,1)=1直接费=29.5+1.3=30.8 工期=13天例题优化费用计算表工期直接费间接费总费用1926.215.241.41826.414.440.81726.813.640.41627.512.840.31429.511.240.71330.810.441.2TC1926.21826.41726.81627.51429.51330.8总费用曲线123456ABCDEGHIJ482256624048131519 191513860正常工期=19天直接费=3+5+1.7+1.5+4+4+1+3.5+2.5=26.2(千元）总费用=26.2+19*0.8=41.4（千元）