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A platform for research: civil engineering, architecture and urbanism
Open caisson structure parameter calculation method based on pipe jacking ultimate pressure
The invention provides an open caisson structure parameter calculation method based on pipe jacking ultimate pressure, which comprises the following steps: acquiring open caisson soil body parameters, pipe jacking pipeline parameters and open caisson design parameters based on assumed conditions of open caisson structure design; calculating the ultimate pressure of the jacking pipe according to the parameters of the jacking pipe; according to the open caisson design parameters and the open caisson soil body parameters, the well wall-soil body contact pressure on one side of a reaction wall of the open caisson structure and the well wall-soil body contact pressure on the opposite side of the reaction wall are calculated, and a stress balance state equation of the open caisson structure is established; and according to the stress balance state equation, the depth from a bottom plate to a blade foot of the open caisson structure is calculated. The sinking depth of the working well structure of the open caisson is inversely calculated through the pipe jacking limit jacking force and the disturbance range of the soil body around the open caisson, the open caisson design is determined according to the pipe joint limit jacking force, the occupied area and the burial depth of the open caisson are more reasonable, and the influence of the open caisson on the ground environment is reduced.
本发明提供一种基于顶管极限压力的沉井结构参数计算方法，包括：基于沉井结构设计的假设条件，获取沉井土体参数、顶管管道参数和沉井设计参数；根据顶管管道参数，计算顶管极限压力；根据沉井设计参数和沉井土体参数，计算沉井结构的反力墙一侧的井壁‑土体接触压力和反力墙对侧的井壁‑土体接触压力，并建立沉井结构的受力平衡状态方程；根据受力平衡状态方程，计算沉井结构的底板至刃脚深度。本发明通过顶管极限顶力以及沉井周边土体扰动范围，反算沉井工作井结构的下沉深度，根据管节极限顶力确定沉井设计，沉井占地面积、埋深更加合理，使其对地面环境的影响降低。
Open caisson structure parameter calculation method based on pipe jacking ultimate pressure
The invention provides an open caisson structure parameter calculation method based on pipe jacking ultimate pressure, which comprises the following steps: acquiring open caisson soil body parameters, pipe jacking pipeline parameters and open caisson design parameters based on assumed conditions of open caisson structure design; calculating the ultimate pressure of the jacking pipe according to the parameters of the jacking pipe; according to the open caisson design parameters and the open caisson soil body parameters, the well wall-soil body contact pressure on one side of a reaction wall of the open caisson structure and the well wall-soil body contact pressure on the opposite side of the reaction wall are calculated, and a stress balance state equation of the open caisson structure is established; and according to the stress balance state equation, the depth from a bottom plate to a blade foot of the open caisson structure is calculated. The sinking depth of the working well structure of the open caisson is inversely calculated through the pipe jacking limit jacking force and the disturbance range of the soil body around the open caisson, the open caisson design is determined according to the pipe joint limit jacking force, the occupied area and the burial depth of the open caisson are more reasonable, and the influence of the open caisson on the ground environment is reduced.
本发明提供一种基于顶管极限压力的沉井结构参数计算方法，包括：基于沉井结构设计的假设条件，获取沉井土体参数、顶管管道参数和沉井设计参数；根据顶管管道参数，计算顶管极限压力；根据沉井设计参数和沉井土体参数，计算沉井结构的反力墙一侧的井壁‑土体接触压力和反力墙对侧的井壁‑土体接触压力，并建立沉井结构的受力平衡状态方程；根据受力平衡状态方程，计算沉井结构的底板至刃脚深度。本发明通过顶管极限顶力以及沉井周边土体扰动范围，反算沉井工作井结构的下沉深度，根据管节极限顶力确定沉井设计，沉井占地面积、埋深更加合理，使其对地面环境的影响降低。
Open caisson structure parameter calculation method based on pipe jacking ultimate pressure
一种基于顶管极限压力的沉井结构参数计算方法
DENG TAO (author) / LIU SHANGCHUN (author) / XIANG ZHIHU (author) / HUANG AILIN (author) / JIANG XINHUA (author) / HUANG KAN (author) / DONG JINGYI (author)
2024-05-07
Patent
Electronic Resource
Chinese
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