（1 无锡市大筑岩土技术有限公司， 无锡 214028； 2 江苏地基工程有限公司， 无锡 214206；3 无锡市建筑设计研究院有限责任公司， 无锡 214001；4 华仁建设集团有限公司建筑设计研究院， 无锡 214072）

［摘要］阐述了劲性复合桩的受荷机理及承载特性，通过实测研究了劲性复合桩施工过程中的环境效应，对施工过程中的孔隙水压力、深层土体位移进行了详细的监测和分析，研究证实了劲性复合桩施工时挤土效应微弱，影响范围有限，为进一步工程应用提供了详实的依据。对比分析了劲性复合桩的碳排放量、工程造价与施工工艺，结果表明，劲性复合桩不仅具有良好的经济优势和施工效率，而且更为节能环保，具有广阔的推广价值。

［关键词］劲性复合桩； 孔隙水压力； 深层土体位移； 承载力特性； 环保节能

中图分类号：TU473-1文献标识码：A文章编号：1002-848X(2018)21-0114-05

Study on bearing behavior of stiff composite pile and influence of its construction on environment

Chen Jiadong1,2， Bie Xiaoyong3， Wang Xiaojian1,2， Wu Liang1， Shi Ying4

(1 Wuxi Dazhu Geotechnical Technology Co., Ltd., Wuxi 214028， China; 2 Jiangsu Foundation Engineering Co., Ltd., Wuxi 214206, China; 3 Wuxi Architectural Design & Research Institute Liability Co., Ltd., Wuxi 214001, China; 4 Huaren Construction Group Co., Ltd., Wuxi 214072, China)

Abstract:The loading mechanism and bearing characteristics of the stiff composite pile were expounded, and the environmental effect of the construction process of the stiff composite pile was studied through the actual measurement, and the pore water pressure and the deep soil displacement were monitored and analyzed in detail. The study proves that the effect of soil compaction is weak and the influence range is limited during the construction of stiff composite piles, which provides a detailed basis for further engineering application. The carbon emission, construction cost and construction technology of the stiff composite piles were compared and analyzed. The results show that the stiff composite pile not only has good economic advantages and construction efficiency, but also is more energy-saving and environmental protection, and has broad popularization value.

Keywords:stiff composite pile; pore water pressure; deep soil displacement; bearing capacity characteristic; environmental protection and energy saving

作者简介：陈家冬，学士，高级工程师，一级建造师，Email：475369104@qq.com。