发布时间 : 星期日 文章井巷工程交叉点设计更新完毕开始阅读686301de82eb6294dd88d0d233d4b14e85243e2f
S3??B3?300??0.39?B3?300???h3?200??
=2600?[ 0.39?2600 +(1800 – 200)] = 6.80㎡
S3??B3?300?2T?2???0.39?B3?300?2T?2????h3?200??
/ =(2600 + 2?250 + 2?50)?[ 0.39?(2600 + 2?250 +2?50)+
(1800 – 200)] = 9.11㎡
TM断面净断面积:
STM?TM?0.39TM??h3?200??
= 5178?[ 0.39?5178 +(1500 – 200)] = 17.19㎡
STM??TM?2T?2???0.39?TM?2T?2????h?200??
/ =(5178 + 2?415 + 2?50)[ 0.39?(5178 + 2?415 + 2?50)+(1500 – 200)]
= 22.49㎡
交岔点变化断面bcd段平均净断面积:
S?S1?STM 2 ?/7.32?17.19?12.26m2 2//S?STMS?1
2?9.75?22.49?16.08m2
22、材料消耗量
①每米砌碹巷道砌拱及砌壁所需材料
砌拱每米所需材料: V1?1.57?B?T/?T/ 砌壁每米所需材料: V2?2h3T/
式中 B — 巷道净宽; T/ — 砌拱的厚度; h3 — 自底板起巷道墙高。 ab段每米砌碹巷道材料消耗量:
/V1ab= 1.57?(2300 + 300 + 250)?250 = 1.12m3
/V2ab= 2?2000?250 = 1.00m3
bcd段每米砌碹巷道材料消耗量:
?2300?300?5178?V1bcd?1.57???415??415?2.80m3
2??V2bcd?2?/2000?1500?415= 1.45m3 2de段每米砌碹巷道材料消耗量:
V1de= 1.57?(2300 + 250)?250 = 1.00m3
/V2de= 2?2000?250 = 1.00m3
cf段每米砌碹巷道材料消耗量:
V1cf= 1.57?(2300 + 300 + 250)?250 = 1.12m3
V2cf= 2?1800?250 = 0.9m3
②每米基础所需材料量:
/V3??m1?m2?T/?m1e
/式中 m1 — 水沟一侧基础深,m1=500mm;
m2 — 无水沟一侧基础深,m2=250mm; e — 随水沟的砌法不同而定,取e=0。
/V3=(500 + 250)×415 = 0.31m3
③每米充填所需材料量:
V4?1.57?B?2T?2????2h2??V4
/式中 V4— 每米充填基础所需材料,V4?(m1?2m2?2T/?3??e)?
V4=(500 + 2×250 + 2×415 + 3×50)×50 = 0.099m3
ab段每米充填所需材料量:
///V4ab=1.57×(2600 + 2×250 + 2×50)×50 + 2×(2000 – 200)×50 + 99000
= 0.53m3
bcd段每米充填所需材料量:
?2300?300?5178??2000?200?1500?V4dcd?1.57???2?415?2?50??50?2????50?9900022???? = 0.64m3
de段每米充填所需材料量:
V4de= 1.57×(2300 + 2×250 + 2×50)×50 + 2×(2000 – 200)×50 + 99000
= 0.51m3
cf段每米充填所需材料量:
V4cf= 1.57×(2600 + 2×250 + 2×50)×50 + 2×(1800 – 200)×50 + 99000
= 0.51m3
表2 第×号交岔点工程量及主要材料消耗量
区段abbcdecf合计断面积/㎡净掘进7.329.7512.2616.086.208.506.809.11长度/m2.479.352.002.00体积/m3净掘进18.0824.08114.63150.3512.4017.0013.6018.22158.71209.65拱2.7726.182.002.2433.19 材料消耗量/m墙基础2.470.7713.562.902.000.621.800.6219.834.903充填1.315.981.021.029.33柱墩4.00