抗浮锚杆及锚杆抗浮体系稳定性验算公式研究

付文光; 柳建国; 杨志银

doi:10.11779/CJGE201411002

抗浮锚杆及锚杆抗浮体系稳定性验算公式研究 English Version

1. 中国京冶工程技术有限公司,北京 100088;
2. 深圳冶建院建筑技术有限公司,广东深圳 518054

详细信息

作者简介:
付文光(1970-),男,北京人,教授级高级工程师,主要从事岩土工程设计咨询、工程实践、试验研究等工作。E-mail:zgjy1992@126.com。

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出版历程
- 收稿日期: 2014-03-23
- 发布日期: 2014-11-19

Formulae for calculating stability of anti-floating anchor and anchor anti-floating system

1. China JingYe Engineering Co., Ltd., Beijing, 100088;
2. Shenzhen YeJianYuan Building Technology Co., Ltd., Shenzhen 518054, China

摘要

摘要: 抗浮锚杆及锚杆抗浮体系的抗浮稳定性验算公式宜采用综合安全系数法、分项系数表达方式。群锚稳定性验算可简化为单锚稳定性验算,验算模型可按上半部分长方体、下半部分圆锥体的假定破裂面形状,锥尖深度为锚固段计算长度与自由段长度之和。群锚整体抗浮承载力为单锚抗浮承载力之和,单锚抗浮力设计值可取假定破裂体内岩土体重量与破裂面黏聚力提供的摩阻力分别除以分项安全系数后之和,分项安全系数取值水准为1.5及3.0。锚杆抗浮体系稳定性验算公式中,抗力设计值可取建筑物自重标准值及其上作用的永久荷载标准值之和除以1.05的安全系数、抗拔桩的抗浮承载力设计值、抗浮锚杆的抗浮承载力设计值三者之和,而浮力设计值则取建构筑物基底静水压力标准值。
- 抗浮锚杆 /
- 锚杆抗浮体系 /
- 稳定性 /
- 圆锥体破裂面 /
- 抗拔桩 /
- 抗浮承载力 /
- 抗拔承载力
Abstract: The comprehensive safety factor methods and partial safety factor expressions should be adopted for the formulae to calculate the stability of anti-floating anchor and anchor anti-floating system. The model for the stability of anchor groups can be simplified as that of single anchor, the fracture surface is assumed that the upper part is cuboid and the lower part is cone, and the depth of conical tip is the sum of the fixed anchor length for calculation and free anchor length. The whole anti-floating bearing capacity of the anchor group is the sum of that of the single anchor. The anti-floating bearing capacity of the single anchor is the sum of the weight of soils inside the fracture body and the frictional resistance supplied by cohesive force on the assumed fracture surface divided by the partial safety factor, which is 1.5 and 3.0, respectively. In the formula for calculating the stability of anchor anti-floating system, the design resistance value is the sum of the design of values anti-floating bearing capacity of uplift piles and anti-floating anchor and the standard weights of buildings and permanent loads on them divided by safety factor of 1.05, and the design value of buoyancy is the hydrostatic pressure at the foundation bottom of buildings.
- anti-floating anchor /
- anchor anti-floating system /
- stability /
- cone fracture surface /
- uplift pile /
- anti-floating bearing capacity /
- uplift bearing capacity

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