Soft soil foundation new construction post pile pressing technology and construction method thereof
A technology for new construction and soft soil foundation, applied in the field of building foundation, can solve the problems of high environmental requirements, long construction period, insufficient land use, etc., and achieve the effect of simple construction equipment, short construction period and small working surface.
Inactive Publication Date: 2010-10-13
SHANGHAI ZHIPING FOUNDATION ENG CO LTD
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[0002] In the multi-storey buildings newly built, rebuilt or expanded in the urban area, due to the geological conditions located in the soft soil foundation or the bearing capacity of the natural foundation cannot meet the requirements, and the environmental requirements are high, the construction site is small, and the common pile machine equipment cannot enter the construction site. Therefore, the height of the building is often changed or the construction plan is cancelled, resulting in the land not being fully utilized. Especially in the construction of post-disaster reconstruction projects, due to time constraints, such as the construction of the conventional method of pile foundation first and then the main body, the construction period is often longer
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Embodiment 1
[0048] 1. Project overview
[0049] A six-storey residential building with frame structure on Wanhangduhou Road. Three sides of the residential building are residential buildings and one side is the revetment of Suzhou Creek. There is only a 3-meter-wide alley to enter the construction site, and large machinery cannot enter. At the same time, according to the survey report, the soil composition of the construction site from top to bottom is as follows: ① layer of filling soil, thickness 1.5m ~ 2.0m; ② layer of clayey silt, fs=15kPa, thickness of about 2.0m; ③ layer of silt Clay, fs = 30kPa, layer thickness about 11.0m; ④ layer of silty clay fs = 50kPa, layer thickness about 6.0m; ⑤ layer of silt sand fs = 100kPa, layer thickness greater than 8.0m.
[0050] According to the foundation conditions, the pile foundation should be selected, and prefabricated piles should be selected according to the usual situation. However, considering that there are many residents around the proje...
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The invention discloses soft soil foundation new construction post pile pressing technology and a construction method thereof. The technology is characterized in that: an anchor rod is embedded and a pressing plate reaction frame is fixed in a foundation under construction, by using the self weight of a building under construction, the prefabricated pile sections are pressed into the soil section by section in a foundation reserved or dug pile pressing hole by anchor static pressure pile technology, and the pile foundation is fixedly connected with the foundation. Therefore, the aims of improving the bearing capacity of foundation soil and controlling the building subsidence are fulfilled. The construction method comprises the following steps of: measuring and placing an axis and a pile; reserving the pile pressing hole; embedding the anchor rod; and pressing and sealing the pile. The technology and the construction method have the advantages of simple and convenient construction, environmental protection, energy conservation, high speed and high efficiency, and are particularly applied to the foundation engineering in which a natural foundation cannot be directly adopted or a pile foundation cannot be constructed in order.
Description
technical field [0001] The invention relates to the technical field of building foundations, and relates to a construction method for pressing piles after new projects on soft soil foundations. Background technique [0002] In the multi-storey buildings newly built, rebuilt or expanded in the urban area, due to the geological conditions located in the soft soil foundation or the bearing capacity of the natural foundation cannot meet the requirements, and the environmental requirements are high, the construction site is small, and the common pile machine equipment cannot enter the construction site. Therefore, the height of the building is often changed or the construction plan is cancelled, resulting in the land not being fully utilized. Especially in the construction of post-disaster reconstruction projects, due to time constraints, such as the construction of the conventional method of pile foundation first and then the main body, the construction period is often longer . ...
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IPC IPC(8): E02D7/20
Inventor 陈富海凌振健
Owner SHANGHAI ZHIPING FOUNDATION ENG CO LTD
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