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Composite pile-anchor supporting method and structure for deepening excavation

A technology of composite support and composite piles, which is applied in excavation, foundation structure engineering, construction, etc., to achieve the effects of saving construction period, reasonable force and convenient construction

Inactive Publication Date: 2016-06-22
SOUTH AFRICA SURVEY & DESIGN INST HUBEI
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  • Description
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  • Application Information

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Problems solved by technology

The existing support structure cannot meet the new force requirements, and it is necessary to take appropriate reinforcement measures for the original support system in order to achieve a safe, effective and reasonable purpose

Method used

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  • Composite pile-anchor supporting method and structure for deepening excavation
  • Composite pile-anchor supporting method and structure for deepening excavation
  • Composite pile-anchor supporting method and structure for deepening excavation

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Embodiment Construction

[0019] see Figure 1~5 , when the present invention carries out secondary deepening excavation to the excavated foundation pit, on the basis of the original foundation pit support system 1, set new support piles and newly added support piles at the bottom of the excavated foundation pit The newly-added support system 4 composed of the crown beam and the original foundation pit support system and the newly-added support system are closely connected by including the newly-added waist beam 2 and the newly-added connecting beam 3 to form a composite support system.

[0020] The original foundation pit support system 1 includes a number of support piles 1.2 and pile top crown beams 1.1 arranged on the inside around the foundation pit, the support piles 1.2 extend into the pile top crown beams 1.1, and several support piles 1.2 are connected as a whole, In the area surrounded by support piles 1.2, a pile row composed of support piles 4.2 and a pile crown beam 4.1 is set, and the sup...

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Abstract

The invention relates to a foundation pit support method for deepening excavation. When the excavated foundation pit is deepened twice, on the basis of the original foundation pit support system, the bottom of the excavated foundation pit Set up a new support system consisting of support pile 2 and newly added pile top crown beam 2, and connect the original foundation pit support system with the newly added support system to form a composite by adding waist beam 2 and connecting beams support system. For the foundation pit support project that has been constructed, if it is proposed to deepen the excavation, the original support system cannot provide sufficient resistance, and the original foundation pit support system can be combined with the new The support system is connected to form an overall composite support system. The support composite system makes full use of the original support structure, and on the basis of ensuring the safety and stability of the foundation pit, it realizes convenient construction and shortens the construction period. This scheme ensures the continuous construction of the subsequent excavation stage of the foundation pit project.

Description

technical field [0001] The invention relates to a reinforcement and support method and structure for a foundation pit support structure, which is especially suitable for deep excavation and support of large-area and deep foundation pits. Background technique [0002] With the rapid development of the social economy, the shortage of urban land has prompted the continuous expansion of buildings (structures) into the underground space, accelerated the development of urban underground space, and led to the development of the scale of urban foundation pit excavation towards larger and deeper directions. In the past 20 years It is the most rapid development period of urban foundation pit engineering in my country. In view of the tight land use and high land price in urban areas, developers always try to improve the space utilization efficiency of land. The upward extension is limited by the floor area ratio, so increasing the utilization of the underground space becomes an effectiv...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 郭运马郧王奎刘佑祥倪欣朱佳易丽丽张杨范晓峰龙晓东罗春雨李松孙盼
Owner SOUTH AFRICA SURVEY & DESIGN INST HUBEI
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