Comprehensive construction method in soft soil area

Abstract

The invention relates to the technical field of construction engineering, and discloses a comprehensive construction method in soft soil areas, including weak foundations. The specific steps are as follows: (1). Then start pile foundation construction; it can solve a series of engineering problems such as foundation reinforcement, foundation pit support, pile foundation construction, cap and foundation trench excavation at one time, and achieve good engineering results; after preloading the foundation, use A relatively hard shell layer is formed on the upper part of the site, which is very beneficial to the construction of pipe pile foundation and its quality assurance; on the one hand, the relatively hard shell layer provides a stable construction operation surface, which facilitates the smooth construction of static pressure pipe piles; Compared with the hard shell, it provides sufficient bearing capacity and lateral limit to avoid displacement, inclination or even broken piles due to surrounding disturbances after the construction of pipe piles.

Description

technical field [0001] The patent of the present invention relates to the technical field of construction engineering, in particular, to a comprehensive construction method in soft soil areas. Background technique [0002] With the development of the economy and the acceleration of urbanization, in cities where land is increasingly tight, it has become inevitable to develop underground space in combination with urban construction and renovation, such as multi-storey basements of high-rise buildings, subways, underground passages, underground parking garages, and underground shopping malls. , underground substations, underground warehouses, underground residential construction and a variety of underground civil and public facilities, etc., in the development and utilization of underground space, deep foundation pit engineering has become an indispensable project; often encountered in the construction of deep foundation pits To the weak foundation, because the weak foundation ...

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Problems solved by technology

[0003] In the prior art, various supports are used to support the foundation pit first, then the earthwork is excavated to the bottom of the foundation pit, and the bottom of the pit is replaced and filled, then the pile foundation construction is carried out, and then the cap, core tube support and excavation are carried out. , this construction method is to divide the project into independent sub-projects one by one. In actual projects, it is easy to cause accidents such as local instability of the foundation pit, deviation of pipe piles, and broken piles.

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