Portal type double-row pile system of rear row pile anchor and construction method of portal type double-row pile system

A construction method and technology for rear row piles, which are applied in excavation, sheet pile wall, foundation structure engineering, etc., can solve problems such as increase in engineering cost, and achieve the effect of controlling engineering cost, facilitating temporary emergency reinforcement, and reducing engineering cost.

Pending Publication Date: 2021-05-14
浙江华展研究设计院股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although increasing the pile length can meet the design requirements of the anti-overturning stability coefficient of double-row pile support to a certain extent, it will also cause a large increase in engineering costs

Method used

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  • Portal type double-row pile system of rear row pile anchor and construction method of portal type double-row pile system
  • Portal type double-row pile system of rear row pile anchor and construction method of portal type double-row pile system
  • Portal type double-row pile system of rear row pile anchor and construction method of portal type double-row pile system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]SeeFigure 1 - Figure 3 , The rear pose double-row pile system of the rear pose anchor includes the front row pile 2 and the rear pile 3, and the front row pile 2 is disposed on the inner side surface of the pit body 1 in the pit body 1. Inside, the outer surface of the rear pose 3 wind body 1 is provided in the soil layer 4, and the front row pile 2 and the rear pile 3 are composed of a plurality of equally equally spaced piles 5, located in the front pose 2 and the rear pile. The soil 41 between the 3 is reinforced by a high-pressure spinning pile. The high-pressure spinning pile is reinforced with the soil of soil. The high pressure spun pile is 700mm, the pile spacing is 500mm, the bit is 200mm, high pressure rotation The cement dosage of the spray pile is 20%, and between the front row pile 2 and the rear pile 3 are connected by the rigid frame 6, the anchor cable 7 is arranged between the two piles 5 adjacent in the rear pile 3, the The spacing between the front row pile ...

Embodiment 2

[0042]SeeFigure 4 The basic structure of the door frame type double row pile system and its construction method thereof is substantially the same, and the pile 5 in the rear pile 3 is hollow pile. The anchor cable 7 is disposed in the pile 5 in the rear pile 3.

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Abstract

The invention discloses a portal type double-row pile system of a rear row pile anchor and a construction method of the portal type double-row pile system. The portal type double-row pile system comprises a front row pile and a rear row pile; the anchor cables are constructed through a high-pressure jet grouting construction process and arranged between every two adjacent piles in the rear row pile; a soil body between the front row pile and the rear row pile is reinforced through high-pressure jet grouting piles; the front row pile and the rear row pile are constructed, and the pile tops are connected through a rigid frame beam; and excavation is conducted to the pit bottom, and a main body structure is constructed. According to the portal type double-row pile system of the rear row pile anchor and the construction method of the portal type double-row pile system, the anti-overturning stability of portal type double-row piles can be improved easily, and the engineering cost is reduced.

Description

Technical field[0001]The present invention relates to the field of foundation pit support, and in particular to a rear roster anchor, a rear-row-type two-row pile system and a construction method thereof.Background technique[0002]With the acceleration of urban construction, the land resources are increasing, scarce, the surrounding environment has become more and more complex, and the foundation pit support project faces more severe tests. At present, in the foundation pit project, the commonly used support form has pile anchor support, pile support. Under some special conditions, for the protection of the underground space and the surrounding environment, there is currently more and more strict on the pile anchor support structure, and many local restrictions have the anchor cable within the red line of the building, so more support is only Pile support can be used. However, for the underground excavation of large space, the pile support not only affects the construction of earth e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/74E02D5/22E02D5/46E02D15/04
CPCE02D5/22E02D5/46E02D5/74E02D15/04E02D17/04
Inventor 郑翔龚迪快成怡冲吴才德许冠王洁栋
Owner 浙江华展研究设计院股份有限公司
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