Construction method for improving bearing capacity of natural foundation by embedding foundation raft into slope protection pile
A foundation raft and natural foundation technology, which is applied in foundation structure engineering, sheet pile walls, excavation, etc., can solve the problems of large excavation and backfilling, limited bearing capacity of the foundation, large manpower and material resources, etc., and save construction costs , increase bearing capacity, and facilitate construction
Pending Publication Date: 2022-04-08
BEIJING FOURTH CONSTR & ENG
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Problems solved by technology
[0005] The invention provides a construction method for embedding foundation rafts into slope protection piles to improve the bearing capacity of natural foundations, which is used to solve the problem of independent construction of slope protection piles and rafts. Technical issues of manpower and material resources
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[0047] The technical solutions of the present invention are described in detail below through the examples, and the following examples are only exemplary, and can only be used to explain and illustrate the technical solutions of the present invention, but cannot be construed as limitations to the technical solutions of the present invention.
[0048] combine Figure 1-6 , the construction method of embedding the foundation raft into the slope protection pile to improve the bearing capacity of the natural foundation, the following construction steps,
[0049] Step 1. Add the lateral force resistance system 2. The combination of the crown beam and the anchor rod system is equivalent to a fixed support, increasing the constraint of the slope protection pile 1, resisting the horizontal soil pressure, and reducing the deflection and deformation of the bottom of the slope protection pile 1. The specific steps are as follows;
[0050] Step 1.1, Drilling rig in-position adjustment: us...
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The invention discloses a construction method for improving the bearing capacity of a natural foundation by embedding a foundation raft into a slope protection pile, which comprises the following steps of: adding a lateral force resisting system, monitoring a foundation pit, determining a chiseling sequence, chiseling the slope protection pile, treating the section of the slope protection pile, constructing a waterproof layer and constructing an overhanging section raft. Under the condition that the excavation size of an original foundation pit and the positions of the slope protection piles are not changed, the raft plates are implanted into the slope protection piles in a segmented mode, the slope protection piles are equivalent to foundation piles, one pile has multiple purposes, the slope protection piles serve as a part of foundation treatment, the bearing capacity of a foundation is increased, after the raft plates are constructed in a segmented mode, the slope protection piles are supported by the raft plates at the chiseling positions of the implanted slope protection piles, construction is convenient and fast, and the construction efficiency is improved. The earth excavation volume is reduced, and the construction cost is saved.
Description
technical field [0001] The invention belongs to the technical field of deep foundation pit construction, in particular to a construction method for embedding foundation rafts into slope protection piles to improve the bearing capacity of natural foundations. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. Before excavation, the excavation plan should be determined according to the geological and hydrological data, combined with the conditions of the nearby buildings, and the waterproof and drainage work should be done well. If the excavation is not deep, the side slope can be used to stabilize the soil slope, and the slope size is determined according to the relevant construction engineering regulations. For those with deep excavation and nearby buildings, the foundation pit wall support method, shotcrete retaining wall method, and large foundation pit even ad...
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IPC IPC(8): E02D17/04E02D17/20E02D27/01E02D5/74E02D3/00E02D31/02
Inventor 许秀冬刘帅杨段兵壮于宏达李东华程祥李永峰于小颖张雷振夏云明
Owner BEIJING FOURTH CONSTR & ENG