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A platform for research: civil engineering, architecture and urbanism
Narrow foundation pit bottom reinforcing method
The invention discloses a method for reinforcing the bottom of a narrow foundation pit. The method comprises the steps that S1, a first reinforcing form and a second reinforcing form are adopted for the bottom of the narrow foundation pit; s2, the passive soil pressure increment E of the passive side of the foundation pit 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, obtaining the thickness of reinforcing soil in the reinforcing form II, wherein the parameter y is larger, and the passive soil pressure of the passive side of the foundation pit is larger; (2) when the total thickness of the reinforced soil is reduced and the reinforced position is within the embedding depth range of the supporting structure, the passive soil pressure of the passive side of the foundation pit is increased; and S4, the pit bottom of the narrow foundation pit is reinforced in a segmented mode within the embedding depth range of the supporting structure. The passive earth pressure in the narrow foundation pit engineering is determined, segmented reinforcement is conducted within the embedded 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, calculation is simple, engineering safety and stability are guaranteed, and economic benefits are brought.
本发明公开了一种窄基坑坑底加固方法，包括：S1、窄基坑坑底分别采用加固形式一和加固形式二；S2、计算基坑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、得出：⑴加固形式二中加固土厚度、参数y越大，基坑被动侧被动土压力越大；⑵加固土总厚度减小且加固位置在支护结构嵌入深度范围内时，基坑被动侧被动土压力增大；S4、对窄基坑坑底在支护结构嵌入深度范围内分段加固。本发明确定窄基坑工程中被动土压力，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，计算简单，保证工程安全稳定，带来经济效益。
Narrow foundation pit bottom reinforcing method
The invention discloses a method for reinforcing the bottom of a narrow foundation pit. The method comprises the steps that S1, a first reinforcing form and a second reinforcing form are adopted for the bottom of the narrow foundation pit; s2, the passive soil pressure increment E of the passive side of the foundation pit 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, obtaining the thickness of reinforcing soil in the reinforcing form II, wherein the parameter y is larger, and the passive soil pressure of the passive side of the foundation pit is larger; (2) when the total thickness of the reinforced soil is reduced and the reinforced position is within the embedding depth range of the supporting structure, the passive soil pressure of the passive side of the foundation pit is increased; and S4, the pit bottom of the narrow foundation pit is reinforced in a segmented mode within the embedding depth range of the supporting structure. The passive earth pressure in the narrow foundation pit engineering is determined, segmented reinforcement is conducted within the embedded 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, calculation is simple, engineering safety and stability are guaranteed, and economic benefits are brought.
本发明公开了一种窄基坑坑底加固方法，包括：S1、窄基坑坑底分别采用加固形式一和加固形式二；S2、计算基坑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、得出：⑴加固形式二中加固土厚度、参数y越大，基坑被动侧被动土压力越大；⑵加固土总厚度减小且加固位置在支护结构嵌入深度范围内时，基坑被动侧被动土压力增大；S4、对窄基坑坑底在支护结构嵌入深度范围内分段加固。本发明确定窄基坑工程中被动土压力，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，计算简单，保证工程安全稳定，带来经济效益。
Narrow foundation pit bottom reinforcing method
一种窄基坑坑底加固方法
HE ZUOYUE (author) / CHEN WANLI (author) / FANG WEN (author) / LI KANG (author) / WANG XINGWEI (author) / YU YUANPING (author) / FU YOUWEI (author) / KONG ZEREN (author) / SHAO WEIXIAN (author) / WANG GELAI (author)
2024-01-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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