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A platform for research: civil engineering, architecture and urbanism
Method for calculating stability of geotextile discrete pile composite foundation
The invention relates to a method for calculating the stability of a geotextile discrete pile composite foundation. The method comprises the following steps: S1, acquiring geometric and physical parameters of the foundation and a pile; s2, performing soil strip division on the arc sliding surface; s3, calculating a total sliding torque Mt; s4, calculating the total anti-skid torque Ma; s5, the stability safety coefficient K is calculated through the total sliding moment Mt and the total anti-sliding moment Ma, in the step of calculating the total anti-sliding moment Ma, the anti-sliding moment provided by foundation soil is calculated by determining the cohesive force and the internal friction angle of the foundation soil, then the flexural capacity is calculated by determining the flexural capacity correction coefficient of the pile, and the stability safety coefficient K is obtained. And finally, judging the smaller value of the allowable tensile strength of the rib material and the pulling resistance of the anchoring end rib material as the pulling force of the anchoring end rib material, and calculating the anti-sliding torque provided by the horizontal reinforced cushion layer by using the obtained data. Compared with the prior art, contribution of piles and soil to sliding torque and anti-sliding torque is reflected, influences of the geotextile and the horizontal reinforced cushion layer on the stability of the composite foundation are included, and the practicability is wide.
本发明涉及一种土工织物散体桩复合地基稳定性的计算方法，包括以下步骤：S1获取地基和桩的几何与物理参数；S2对圆弧滑动面进行土条划分；S3计算总滑动力矩Mt；S4计算总抗滑力矩Ma；S5通过总滑动力矩Mt和总抗滑力矩Ma计算稳定安全系数K，在计算总抗滑力矩Ma中，先通过确定地基土的黏聚力和内摩擦角计算出地基土提供的抗滑力矩，接着通过确定桩的抗弯承载力修正系数计算出抗弯承载力，最后判断筋材允许拉伸强度与锚固端筋材抗拔力的较小值，作为锚固端筋材拉力，用得到的数据计算出水平加筋垫层提供的抗滑力矩。与现有技术相比，本发明体现出桩与土对滑动力矩、抗滑力矩的贡献，包含土工织物以及水平加筋垫层对复合地基稳定性的影响，实用性广泛。
Method for calculating stability of geotextile discrete pile composite foundation
The invention relates to a method for calculating the stability of a geotextile discrete pile composite foundation. The method comprises the following steps: S1, acquiring geometric and physical parameters of the foundation and a pile; s2, performing soil strip division on the arc sliding surface; s3, calculating a total sliding torque Mt; s4, calculating the total anti-skid torque Ma; s5, the stability safety coefficient K is calculated through the total sliding moment Mt and the total anti-sliding moment Ma, in the step of calculating the total anti-sliding moment Ma, the anti-sliding moment provided by foundation soil is calculated by determining the cohesive force and the internal friction angle of the foundation soil, then the flexural capacity is calculated by determining the flexural capacity correction coefficient of the pile, and the stability safety coefficient K is obtained. And finally, judging the smaller value of the allowable tensile strength of the rib material and the pulling resistance of the anchoring end rib material as the pulling force of the anchoring end rib material, and calculating the anti-sliding torque provided by the horizontal reinforced cushion layer by using the obtained data. Compared with the prior art, contribution of piles and soil to sliding torque and anti-sliding torque is reflected, influences of the geotextile and the horizontal reinforced cushion layer on the stability of the composite foundation are included, and the practicability is wide.
本发明涉及一种土工织物散体桩复合地基稳定性的计算方法，包括以下步骤：S1获取地基和桩的几何与物理参数；S2对圆弧滑动面进行土条划分；S3计算总滑动力矩Mt；S4计算总抗滑力矩Ma；S5通过总滑动力矩Mt和总抗滑力矩Ma计算稳定安全系数K，在计算总抗滑力矩Ma中，先通过确定地基土的黏聚力和内摩擦角计算出地基土提供的抗滑力矩，接着通过确定桩的抗弯承载力修正系数计算出抗弯承载力，最后判断筋材允许拉伸强度与锚固端筋材抗拔力的较小值，作为锚固端筋材拉力，用得到的数据计算出水平加筋垫层提供的抗滑力矩。与现有技术相比，本发明体现出桩与土对滑动力矩、抗滑力矩的贡献，包含土工织物以及水平加筋垫层对复合地基稳定性的影响，实用性广泛。
Method for calculating stability of geotextile discrete pile composite foundation
一种土工织物散体桩复合地基稳定性的计算方法
CHEN JIANFENG (author) / GU ZIANG (author)
2022-11-25
Patent
Electronic Resource
Chinese
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