Construction method for strengthening base of static-pressure anchor rod pile
A technology of foundation construction and anchor piles, which is applied in the direction of foundation structure engineering, foundation structure repair, sheet pile wall, etc., which can solve the problem of high cost of mechanical platform removal and re-repair, strict requirements for construction noise control, and narrow construction site and other issues to achieve the effect of flexible construction, less resource consumption and less economic cost
Inactive Publication Date: 2012-11-07
LONGXIN CONSTR GRP
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Problems solved by technology
However, for basements in existing buildings, the construction site is narrow and the floor height is low; and some office or residential buildings may need to be rebuilt and expanded during use, and the construction noise control is strictly required at this time
In the existing technology, piles are generally used to reinforce the foundation of existing buildings, and construction is carried out with a static pile driver. During construction, the roof of the construction area in the existing building needs to be removed, and the original structure is destroyed. Not only the construction volume is large, but the construction noise Strong, the cost of its mechanical shift, dismantling and repairing is also very large
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Embodiment Construction
[0028] like figure 1 Shown, a kind of static pressure anchor pile reinforcement foundation construction method of the present invention, comprises the following steps:
[0029] 1) Measure and locate the pile position according to the axis of the completed structure in the basement of the existing building, determine the cross center line of the pile position on the basement floor, and conduct a review to ensure that the pile position is accurately arranged. At the same time, according to the level elevation of the existing building, measure the level elevation (1m line) to the column or shear wall near the pile pressing position. After the pile pressing is completed, check whether the basement floor rebounds under the pile extrusion. . At the same time, before excavating the pile pressure hole, it is necessary to determine the installation position of the pile frame and release the control line accurately.
[0030] 2) After the positioning measurement is qualified, cut the u...
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The invention discloses a construction method for a strengthening base of a static-pressure anchor rod pile, which is simple in a construction process, free of vibration and noise, little in resource consumption, environment-friendly and energy-saving. The construction method comprises the following steps: firstly, measuring and positioning piles to be strengthened on an existing building foundation, and determining the installation position of a pile frame; excavating foundation bottom plate reinforcements on the positioning positions of the strengthened piles to form pile pressing holes; positioning anchor rod holes and drilling; installing anchor rods into anchor rod holes, fixing and maintaining the anchor rods; installing the pile frame and arranging a static-pressure lifting jack on the pile frame; pressing steel pipe piles to set depth under the guide of the anchor rods in a sectional manner, wherein the steel pipe piles are welded together before being pressed in from the second section of steel pipe pile; after the steel pipe piles are completely pressed, backfilling soil, filling broken stones in the steel pipe piles, casting micro-expansive concrete to seal the top, and welding foundation bottom plate reinforcements; and finally, casting concrete, sealing the piles and setting waterproof measures.
Description
[0001] technical field [0002] The invention relates to a building construction method, in particular to a method for reinforcing a foundation with static pressure anchor piles. The method is suitable for reinforcing foundations of reconstruction and expansion projects, especially for reinforcing foundations of existing buildings. construction. Background technique [0003] With the in-depth development of domestic urbanization, more and more existing buildings will be rebuilt and expanded for various reasons, which also creates a need for reinforcement of the foundation. However, for basements in existing buildings, the construction site is narrow and the floor height is low; and some office or residential buildings may need to be rebuilt and expanded during use, and the construction noise control is strictly required at this time. In the existing technology, piles are generally used to reinforce the foundation of existing buildings, and construction is carried out with a...
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Login to View More IPC IPC(8): E02D7/20E02D5/74E02D37/00
Inventor 程岗汤华辉张祥施凯旋刘瑛
Owner LONGXIN CONSTR GRP