预制轻型泡沫板胎膜的受力分析  

Stress analysis ofprefabricated light foam fetal formwork

作　　者：黄德棋 Huang Deqi(Fujian academy of building research Co.,Ltd.Fujian provincial key laboratory of green building technology,Fuzhou 350108)

机构地区：[1]福建省建筑科学研究院有限责任公司福建省绿色建筑技术重点实验室,福建福州350108

出　　处：《福建建筑》2020年第12期147-151,共5页Fujian Architecture & Construction

摘　　要：预制轻型泡沫板胎膜在不同施工阶段受力状态也不同,其安全使用的关键阶段是安装后的回填土阶段,此时胎膜受制于自身较低的抗压/抗折强度,易因较大的侧压力而失效。因此,为使用安全起见,必须得到胎膜在回填土阶段的理论最大安全应用高度。简化了胎膜受力状态,推导出压实荷载影响下的胎膜侧压力计算公式,通过强度验算得到胎膜的理论最大安全应用高度。The stress state of the prefabricated light foam fetal formwork was different in different construction stages.The key stage of its safe use was the backfill stage after installation.At this time,the fetal formwork was subject to its own low compressive/flexural strength,and was prone to failure due to higher lateral pressure.Therefore,for the sake of safety,it was necessary to obtain the theoretical maximum safe application height of the fetal formwork in the backfill stage.The stress state of fetal formwork has been simplified.And the formula for calculating the lateral pressure of fetal formwork under the influence of compaction load has been derived.The theoretical maximum safe application height of fetal formwork was obtained by strength calculation.

关 键 词：预制轻型泡沫板胎膜 基础地梁 Boussinesq公式 朗肯理论 

分 类 号：TU4[建筑科学—土工工程]