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Basement support construction method under prestressed tension

一种地下室、预应力的技术，应用在挖方、基础结构工程、建筑等方向，能够解决增加工程成本、减少成本、不利于挖土等问题，达到成本低、施工安全可靠的效果

Active Publication Date: 2018-12-07
曾彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the excavation of the basement is deep, set concrete braces to resist the passive earth pressure. Setting too many concrete braces will not only increase the project cost, but also is not conducive to excavation. The horizontal axial force on the concrete braces will be very large. Reducing the axial force of the concrete support and ensuring safety is a problem faced by engineers
However, how to reduce costs while ensuring safety

Method used

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  • Basement support construction method under prestressed tension
  • Basement support construction method under prestressed tension
  • Basement support construction method under prestressed tension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this embodiment, a ring support is set in the middle of the basement, and the area of ​​the ring support is 50m 2 , the center of the ring support is the centroid of the geometric shape of the basement, the height of the ring support is 600mm, and the width of the ring support is 300mm.

[0054] The basement is provided with cross braced beams 2, and the cross point of the cross braced beams 2 is at the centroid of the geometric shape of the basement. The height of the cross braced beams 2 is 700mm, and the width of the cross braced beams 2 is 300mm.

[0055] The steel lattice column 3 is set at the intersection of the ring support and the cross braced beam 2. The steel lattice column 3 is inserted into the engineering pile by 600mm. 3. Set the prestressed tension pier 8 above.

[0056] Bored cast-in-place piles are used for basement protection piles; cement mixing pile water-stop curtains are installed around the drilled cast-in-place piles. The cement mixing pile...

Embodiment 2

[0073] In this embodiment, a ring support is set in the middle of the basement, and the area of ​​the ring support is 50m 2 , the center of the ring support is the centroid of the geometric shape of the basement, the height of the ring support is 600mm, and the width of the ring support is 300mm.

[0074] The basement is provided with cross braced beams 2, and the cross point of the cross braced beams 2 is at the centroid of the geometric shape of the basement. The height of the cross braced beams 2 is 700mm, and the width of the cross braced beams 2 is 300mm.

[0075] The steel lattice column 3 is set at the intersection of the ring support and the cross braced beam 2. The steel lattice column 3 is inserted into the engineering pile by 600mm. 3. Set the prestressed tension pier 8 above.

[0076] Bored cast-in-place piles are used for basement protection piles; cement mixing pile water-stop curtains are installed around the drilled cast-in-place piles. The cement mixing pile...

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Abstract

The invention discloses a basement support construction method under prestressed tension. The basement support construction method under prestressed tension is characterized in that a circular supportis arranged in the middle of a basement, the basement is provided with a cross-shaped opposite supporting beam, and a steel lattice column is arranged on the crossing portion of the circular supportand the cross-shaped opposite supporting beam and provided with a prestressed tension pier. A drilling pouring pile is adopted as the basement exterior-protected pile. A cement stirring pile water stopping curtain is arranged on the periphery of the drilling pouring pile. A concrete top pressing beam is arranged on the top of the drilling pouring pile. When the digging depth of the basement is nolarger than 3.5m, a basement waist beam is arranged in the middle of the basement. A steel suspension cable pulling junction point is arranged on the upper or lower portion of the cross-shaped opposite supporting beam, and prestressed tension is adopted by a steel suspension cable. Cast-in-place concrete plates are arranged on four corners.

Description

technical field [0001] The invention relates to a construction method, in particular to a basement support construction method under the condition of prestress tension. Background technique [0002] When the excavation of the basement is deep, set concrete braces to resist the passive earth pressure. Setting too many concrete braces will not only increase the project cost, but also is not conducive to excavation. The horizontal axial force on the concrete braces will be very large. Reducing the axial force of the concrete support and ensuring safety is a problem faced by engineering personnel. However, how to reduce costs under the premise of ensuring safety. Contents of the invention [0003] The object of the present invention is to provide a basement support construction method under the condition of prestress tension to solve the deficiencies of the prior art. [0004] In the present invention, a ring support is set in the middle of the basement, and the area of ​​th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04E02D2250/0046
Inventor 朱奎
Owner 曾彬