Construction method of large-diameter thin-walled cylindrical pile composite anchor type foundation pit enclosure structure
A thin-walled cylindrical pile and foundation pit enclosure technology, which is applied in foundation structure engineering, excavation, sheet pile wall and other directions, can solve the problems of difficulty in ensuring the quality of enclosure piles, difficulty in subsequent treatment of mud, and inconvenience in foundation pit construction. Avoid subsequent transportation and handling problems, strong resistance to lateral deformation, and the effect of reducing noise pollution
Active Publication Date: 2016-05-04
中冶地集团西北岩土工程有限公司
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Problems solved by technology
This kind of enclosure structure has the disadvantages of serious mud pollution, difficulty in subsequent treatment of mud, high energy consumption for drilling, difficulty in ensuring the quality of enclosure piles, and inconvenient construction in foundation pits.
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[0042] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0043] Figure 1~Figure 8 It is only an embodiment of the present invention, and the enclosure structure of the foundation pit shown in the embodiment is a large-diameter thin-walled cylindrical pile compounded with a layer of purlins and two layers of anchor rods.
[0044] Its specific structure design is as follows:
[0045] refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the large-diameter thin-walled cylindrical pile composite anchor-type foundation pit enclosure structure provided by this embodiment includes a cement mixing pile water-stop curtain 26, a large-diameter thin-walled cylindrical pile 1, the first layer of anchor rods 4, the second Layer anchor rod 5, top beam 3, purlin 6 on the first layer and reinforcement pile 25 in the passive area. The water-stop curtain 26...
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The invention discloses a large-diameter thin-walled tubular pile composite anchor rod type foundation pit support structure and a construction method thereof. The support structure design mainly relates to connecting and structure designs of waterproof curtains, thin-walled tubular piles, passive zone reinforcing piles, coping beams and enclosing purlins. The support structure construction mainly includes waterproof curtain construction, large-diameter thin-walled tubular pile construction, passive zone reinforcing pile construction, first-layer anchor rod construction (downward foundation pit digging-drilling machine hole forming-anchor rod body hole penetrating-anchorage section grouting-free end grouting-nut installation and fastening), second-layer anchor rod construction (downward foundation pit digging-drilling machine hole forming-anchor rod body hole penetrating-anchorage section grouting-free end grouting) and first-layer enclosing purlin construction (enclosing purlin steel bar binding-enclosing purlin template installation-concrete pouring). The large-diameter thin-walled tubular piles mainly used for foundation pit processing traditionally, high-strength anchor rods and enclosing purlins are compounded to support a foundation pit through special structural design and construction, the economic, environment-friendly and efficient effects are achieved, and great convenience is brought to follow-up foundation pit construction.
Description
technical field [0001] The invention relates to an enclosure structure for a foundation pit of a building, and further relates to a new effective structural design and a corresponding construction method for the enclosure enclosure of a foundation pit in a soft clay area. Background technique [0002] The development of China is mainly the development of the economy. The development of the economy brings the development of the construction industry. The development direction of the construction industry is bound to be taller, bigger, better and more beautiful. The guarantee of this direction is to lay a solid foundation for the construction. Foundation, which also requires doing more in foundation pit enclosure. On the other hand, due to less and less construction land, more and more building construction has to be carried out in soft soil areas with poor foundation conditions, which also puts forward more specifically how to better protect foundation pits in soft soil areas...
Claims
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IPC IPC(8): E02D17/04E02D5/76
Inventor 王军叶强蔡袁强丁光亚王鹏
Owner 中冶地集团西北岩土工程有限公司