（1 深圳市联泰房地产开发有限公司，  深圳 518040； 2 广东省建筑设计研究院，  广州 510010）

［摘要］由于鹤山名门项目地下室底板持力层为中风化花岗岩，因此选用岩石锚杆作为抗浮措施；并对岩石锚杆的基本构造，及锚固长度关于直锚长度、抗拔承载力、锚固体整体稳定性三个方面基本要求进行详细说明；随后综合两种常见的抗浮锚杆布置方式的优缺点，提出一种新型的锚杆布置方式——梅花型布置；最后按设计规范及相关要求，确定抗浮锚杆的承载力特征值和锚固长度。采用梅花型布置方式布置锚杆，利用有限元计算模型进行抗浮设计与分析，结果表明：抗浮锚杆受力均匀，底板变形满足设计要求，底板受力合理，其配筋率也相对经济。

［关键词］地下室底板； 抗浮锚杆； 梅花型布置； 抗浮设计与分析； 有限元计算模型

中图分类号：TU476文献标识码：A文章编号：1002-848X(2020)11-0103-05

Anti-floating design and analysis of basement for Mingmen Project in Heshan

ZHOU Jiawei1,2, DENG Hanrong2

(1 Shenzhen Liantai Real Estate Development Company Limited, Shenzhen 518040, China；2 Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China)

Abstract:As the bearing layer of the foundation slab in basement of Mingmei Project in Heshan moderately weathered granite, rock anchor bar was selected as anti-floating measure; the basic structure of rock anchor bar and the basic requirements of anchorage length on straight anchor length, anti-pulling bearing capacity and overall stability of anchor solid were described in detail; then, a new type of anti-floating anchor bar with quincunx-shaped arrangement was proposed based on the advantages and disadvantages of two common arrangements of anti-floating anchor bar. Finally, according to the design specifications and relevant requirements, the bearing capacity characteristic value and anchorage length of the anti-floating anchor bar were determined. Anchor bars were arranged by quincunx-shaped arrangement form, design and analysis of anti-floating anchor bar were carried out by using the finite element model. The results show that the anti-floating anchor is evenly stressed, the deformation of the foundation slab in basement meets the design requirements, the stress of the foundation slab in basement is reasonable, and its reinforcement ratio is relatively economic.

Keywords:foundation slab in basement; anti-floating anchor bar; quincunx-shaped arrangement; anti-floating design and analysis; finite element calculation model

作者简介：周佳伟，硕士，工程师，Email: 289348945@qq.com。