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A platform for research: civil engineering, architecture and urbanism
Safe pile cutting method for foundation pit with retaining supporting piles
The invention discloses a safe pile cutting method for a foundation pit with retaining supporting piles. A bidirectional support is adopted and is trapezoid and has three stress surfaces. Two of the stress surfaces are used for locking steel strands penetrating through the support in the tangential direction of the two sides of the supporting piles, reinforcing anchor cables evenly bear force, andtherefore the waist rail force transmission link is omitted, the prestress damage problem caused by deformation of waist rails does not exist, and the deformation of the foundation pit is better controlled. Another stress surface transmits resultant force of the steel strands to the supporting piles. Since the three surfaces are all pressure-bearing surfaces, the stress conditions are good. The bidirectional support is closely combined with the supporting piles, all the supporting piles evenly bear force, the locking force of the anchor cables is directly transmitted to slope piles and has nothing to do with the positioning deviation of the supporting piles, and the deformation is well controlled.
本发明公开了一种支护桩围护基坑安全截桩方法，采用双向支座，双向支座呈梯形，有三个受力面，其中两个面用于锁定沿支护桩两侧切线方向穿越支座的钢绞线，加固锚索受力均匀，从而取消了腰梁传力环节，不存在腰梁变形产生的预应力损失问题，更好的控制基坑的变形。另一个面将钢绞线的合力传向支护桩。由于三个面均为承压面，受力条件好。双向支座与支护桩紧密结合使每根支护桩均匀受力，直接将锚索锁定力传递至护坡桩，与支护桩定位偏差无关，控制变形好。
Safe pile cutting method for foundation pit with retaining supporting piles
The invention discloses a safe pile cutting method for a foundation pit with retaining supporting piles. A bidirectional support is adopted and is trapezoid and has three stress surfaces. Two of the stress surfaces are used for locking steel strands penetrating through the support in the tangential direction of the two sides of the supporting piles, reinforcing anchor cables evenly bear force, andtherefore the waist rail force transmission link is omitted, the prestress damage problem caused by deformation of waist rails does not exist, and the deformation of the foundation pit is better controlled. Another stress surface transmits resultant force of the steel strands to the supporting piles. Since the three surfaces are all pressure-bearing surfaces, the stress conditions are good. The bidirectional support is closely combined with the supporting piles, all the supporting piles evenly bear force, the locking force of the anchor cables is directly transmitted to slope piles and has nothing to do with the positioning deviation of the supporting piles, and the deformation is well controlled.
本发明公开了一种支护桩围护基坑安全截桩方法，采用双向支座，双向支座呈梯形，有三个受力面，其中两个面用于锁定沿支护桩两侧切线方向穿越支座的钢绞线，加固锚索受力均匀，从而取消了腰梁传力环节，不存在腰梁变形产生的预应力损失问题，更好的控制基坑的变形。另一个面将钢绞线的合力传向支护桩。由于三个面均为承压面，受力条件好。双向支座与支护桩紧密结合使每根支护桩均匀受力，直接将锚索锁定力传递至护坡桩，与支护桩定位偏差无关，控制变形好。
Safe pile cutting method for foundation pit with retaining supporting piles
一种支护桩围护基坑安全截桩方法
HU ZHIPING (author) / LONG ZHAO (author) / REN XIANG (author) / HE LAPING (author) / ZHANG ENXIANG (author) / WAN YINGZHE (author) / ZHENG YUNXIN (author) / LIU JIAQI (author) / ZHANG SEN'AN (author) / SHEN QIUWU (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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