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A platform for research: civil engineering, architecture and urbanism
Wide foundation pit bottom reinforcing method considering disturbance effect
The invention discloses a wide foundation pit bottom reinforcing method considering the disturbance effect. The wide foundation pit bottom reinforcing method comprises the steps that S1, a first reinforcing form and a second reinforcing form are adopted for the wide foundation pit bottom; s2, the passive side passive soil pressure increment E is calculated as a binary quadratic function of parameters x and y, and when the parameter x or the parameter y is a constant value, the passive soil pressure increment E is a unary quadratic function of y or x; s3, the cohesive force and the internal friction angle of the undisturbed soil disturbance area of the second reinforcement form are calculated, the influence of the cohesive force and the internal friction angle on the passive side passive soil pressure increment E is analyzed, and it is obtained that the passive area passive soil pressure can be increased through wide foundation pit bottom reinforcement segmented treatment; and S4, the pit bottom of the wide foundation pit is reinforced in a segmented mode within the embedding depth range of the supporting structure. Sectional reinforcement is conducted within the embedding depth range of the supporting structure, the resistance of the supporting structure of the foundation pit is improved by improving the passive earth pressure of the passive side of the foundation pit, the whole method is clear in principle and simple in calculation process, engineering safety and stability are guaranteed, and economic benefits are improved.
本发明公开了一种考虑扰动作用的宽基坑坑底加固方法，包括：S1、对宽基坑坑底分别采用加固形式一和加固形式二；S2、计算被动侧被动土压力增量△E为参数x、y的二元二次函数，当参数x或参数y为恒定值时，被动土压力增量△E为y或x的一元二次函数；S3、计算加固形式二原状土扰动区域的粘聚力和内摩擦角，并分析其对被动侧被动土压力增量△E的影响，得出宽基坑坑底加固分段处理可使被动区被动土压力增大；S4、对宽基坑坑底在支护结构嵌入深度范围内分段加固。本发明在支护结构嵌入深度范围内分段加固，通过提高基坑被动侧被动土压力，改善基坑支护结构的抗力，整个方法原理明晰，计算过程简单，保证工程安全稳定，提高经济效益。
Wide foundation pit bottom reinforcing method considering disturbance effect
The invention discloses a wide foundation pit bottom reinforcing method considering the disturbance effect. The wide foundation pit bottom reinforcing method comprises the steps that S1, a first reinforcing form and a second reinforcing form are adopted for the wide foundation pit bottom; s2, the passive side passive soil pressure increment E is calculated as a binary quadratic function of parameters x and y, and when the parameter x or the parameter y is a constant value, the passive soil pressure increment E is a unary quadratic function of y or x; s3, the cohesive force and the internal friction angle of the undisturbed soil disturbance area of the second reinforcement form are calculated, the influence of the cohesive force and the internal friction angle on the passive side passive soil pressure increment E is analyzed, and it is obtained that the passive area passive soil pressure can be increased through wide foundation pit bottom reinforcement segmented treatment; and S4, the pit bottom of the wide foundation pit is reinforced in a segmented mode within the embedding depth range of the supporting structure. Sectional reinforcement is conducted within the embedding depth range of the supporting structure, the resistance of the supporting structure of the foundation pit is improved by improving the passive earth pressure of the passive side of the foundation pit, the whole method is clear in principle and simple in calculation process, engineering safety and stability are guaranteed, and economic benefits are improved.
本发明公开了一种考虑扰动作用的宽基坑坑底加固方法，包括：S1、对宽基坑坑底分别采用加固形式一和加固形式二；S2、计算被动侧被动土压力增量△E为参数x、y的二元二次函数，当参数x或参数y为恒定值时，被动土压力增量△E为y或x的一元二次函数；S3、计算加固形式二原状土扰动区域的粘聚力和内摩擦角，并分析其对被动侧被动土压力增量△E的影响，得出宽基坑坑底加固分段处理可使被动区被动土压力增大；S4、对宽基坑坑底在支护结构嵌入深度范围内分段加固。本发明在支护结构嵌入深度范围内分段加固，通过提高基坑被动侧被动土压力，改善基坑支护结构的抗力，整个方法原理明晰，计算过程简单，保证工程安全稳定，提高经济效益。
Wide foundation pit bottom reinforcing method considering disturbance effect
一种考虑扰动作用的宽基坑坑底加固方法
HE ZUOYUE (author) / CHEN WANLI (author) / FANG WEN (author) / SUN XIANGDONG (author) / CHEN GUOXIONG (author)
2024-01-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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