土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (3): 289-291.

• 工程实录 • 上一篇    下一篇

杭州地区岩溶深埋场地钻孔灌注桩施工处理

牟大鹏，吴灿鑫   

  1. (上海勘察设计研究院（集团）有限公司,上海 200093)
  • 收稿日期:2019-09-20 修回日期:2019-10-09 出版日期:2020-06-20 发布日期:2020-06-21
  • 作者简介:牟大鹏(1988-)，男，工程师，研究方向为岩土工程勘察、设计等。

Installation of Cast-In-Place Reinforced Concrete Piles in Deeply Embedded Karst Terrain

MOU Dapeng, WU Canxin   

  1. (SGDI Engineering Consulting (Group) Co. Ltd., Shanghai 200093)
  • Received:2019-09-20 Revised:2019-10-09 Online:2020-06-20 Published:2020-06-21

摘要： 杭州地区部分建设场地分布有灰岩，一般发育有岩溶，其埋深较大，形态、规模、连通情况等较难探明，岩溶场地桩基施工成为建设过程中影响工程安全重要的一环。杭州地区岩溶深埋场地桩基施工方面经验相对较少，对岩溶深埋场地钻孔灌注桩施工处理方式进行总结具有重要的意义。从实际工程案例着手，对岩溶场地勘察结果、岩溶施工处理方式进行总结，针对杭州地区深埋岩溶场地地质条件对桩基施工的影响进行分析，为杭州地区深埋岩溶场地的岩溶处理、桩基施工提供参考。

关键词: 岩溶, 钻孔灌注桩, 施工处理

Abstract: Some of the construction sites in Hangzhou have limestone deposits, karst is generally developed. The embedment depth of the karstic bedrock is generally large, and it is difficult to completely characterize the degree of development rock cavities and their connectivity. In large construction projects, the karst site is a vital part of the pile foundation safe installations. However, the experience of pile installations in karst formations is relatively rare in Hangzhou area. As a result, it is important to summarize the lessons learned in the pile installations in karst. This paper presents a project case history. The subsurface geotechnical investigation and karst rock cavity treatment during the construction are also introduced.

Key words: Karst Rock Cavities and Pinnacles, CastinPlace Reinforced Concrete Piles, Construction Techniques

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