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A platform for research: civil engineering, architecture and urbanism
Strip-shaped foundation pit bottom inrush-resistant reinforcement thickness determination method
The invention provides a strip-shaped foundation pit bottom inrush-resistant reinforcement thickness determination method, a strip-shaped foundation pit bottom is provided with a cement soil bottom plate, and the method comprises the steps that the shear-resistant critical reinforcement thickness # imgabs0 # of the cement soil bottom plate is calculated; calculating the critical reinforcement thickness # imgabs 1 # of contact damage of the cement soil bottom plate and the supporting structure; the bending rigidity damage critical reinforcement thickness # imgabs2 # of the cement soil bottom plate is calculated; calculating the critical reinforcement thickness # imgabs3 # of the pre-stress flexural-tensile failure of the cement soil belt; calculating the critical reinforcement thickness # imgabs4 # of the non-prestressed bending and tensile failure of the cement soil; and determining the reinforcing thickness # imgabs5 # of the strip-shaped foundation pit bottom inrush resistance. And selecting the maximum critical reinforcement thickness under the five stress damage forms, and determining the maximum critical reinforcement thickness as the pit bottom reinforcement thickness. Compared with a pressure balance method given in the specification for checking the inrush stability, the method is more reasonable and accurate, the thickness of a pit bottom reinforcing cement soil layer can be greatly reduced, and the manufacturing cost is saved.
本发明提供了一种条形基坑坑底抗突涌的加固厚度确定方法，所述条形基坑坑底设有水泥土底板，该方法包括：计算水泥土底板抗剪临界加固厚度#imgabs0#；计算水泥土底板与支护结构接触破坏的临界加固厚度#imgabs1#；计算水泥土底板抗弯刚度破坏临界加固厚度#imgabs2#；计算水泥土带预应力弯拉破坏临界加固厚度#imgabs3#；计算水泥土无预应力弯拉破坏临界加固厚度#imgabs4#；确定条形基坑坑底抗突涌的加固厚度#imgabs5#。选择五种受力破坏形式下的最大临界加固厚度，以此确定为坑底加固厚度。相比规范给出的压力平衡法来验算突涌稳定性，本发明更合理更准确，能大大减少坑底加固水泥土层厚度，节省造价。
Strip-shaped foundation pit bottom inrush-resistant reinforcement thickness determination method
The invention provides a strip-shaped foundation pit bottom inrush-resistant reinforcement thickness determination method, a strip-shaped foundation pit bottom is provided with a cement soil bottom plate, and the method comprises the steps that the shear-resistant critical reinforcement thickness # imgabs0 # of the cement soil bottom plate is calculated; calculating the critical reinforcement thickness # imgabs 1 # of contact damage of the cement soil bottom plate and the supporting structure; the bending rigidity damage critical reinforcement thickness # imgabs2 # of the cement soil bottom plate is calculated; calculating the critical reinforcement thickness # imgabs3 # of the pre-stress flexural-tensile failure of the cement soil belt; calculating the critical reinforcement thickness # imgabs4 # of the non-prestressed bending and tensile failure of the cement soil; and determining the reinforcing thickness # imgabs5 # of the strip-shaped foundation pit bottom inrush resistance. And selecting the maximum critical reinforcement thickness under the five stress damage forms, and determining the maximum critical reinforcement thickness as the pit bottom reinforcement thickness. Compared with a pressure balance method given in the specification for checking the inrush stability, the method is more reasonable and accurate, the thickness of a pit bottom reinforcing cement soil layer can be greatly reduced, and the manufacturing cost is saved.
本发明提供了一种条形基坑坑底抗突涌的加固厚度确定方法，所述条形基坑坑底设有水泥土底板，该方法包括：计算水泥土底板抗剪临界加固厚度#imgabs0#；计算水泥土底板与支护结构接触破坏的临界加固厚度#imgabs1#；计算水泥土底板抗弯刚度破坏临界加固厚度#imgabs2#；计算水泥土带预应力弯拉破坏临界加固厚度#imgabs3#；计算水泥土无预应力弯拉破坏临界加固厚度#imgabs4#；确定条形基坑坑底抗突涌的加固厚度#imgabs5#。选择五种受力破坏形式下的最大临界加固厚度，以此确定为坑底加固厚度。相比规范给出的压力平衡法来验算突涌稳定性，本发明更合理更准确，能大大减少坑底加固水泥土层厚度，节省造价。
Strip-shaped foundation pit bottom inrush-resistant reinforcement thickness determination method
一种条形基坑坑底抗突涌的加固厚度确定方法
XIAO SHAOHUA (author) / DONG QUANLI (author) / XIE ZHANHU (author) / LUO RONGLI (author)
2024-12-13
Patent
Electronic Resource
Chinese
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