DEVELOPMENT AND NEW CHALLENGES OF DEEP EXCAVATION SUPPORTING ENGINEERING IN GUANGDONG PROVINCE
YANG Guanghua1，2
(1. Guangdong Research Institute of Water Resources and Hydropower，Guangzhou，Guangdong 510610，China；
2. The Geotechnical Engineering Technology Center of Guangdong Province，Guangzhou，Guangdong 510610，China)
Abstract：The diversity of geological conditions determines the variety of the pit supporting engineering in Guangdong. Thus，different kinds of supporting patterns are used in Guangdong，which are rare in our country. Some new progresses and understandings are introduced in the paper，including the impact of precipitation on the surrounding environment and ways to deal with it，analysis of some different treatments with different results on the water in the bottom of pits and reasonable treatments，problems and countermeasures of the lateral displacement of piles generated by earthwork excavation in soft soil. Except that，some new and successful supporting types and the applications of the double-row piles method，top-down method and mid-island method are also discussed. Finally，the further study of some theoretical issues are proposed in the practice of pit supporting engineering，such as reasonable calculation of the force of prestressed anchor cable，the calculation mode of earth pressure，control of the pit displacement，reasonable supporting patterns in the deep soft soil and water and earth pressures in the residual soil. All these new and challenging scientific problems require further research.
杨光华1，2. 广东深基坑支护工程的发展及新挑战[J]. 岩石力学与工程学报, 2012, 31(11): 2276-2284.
YANG Guanghua1，2. DEVELOPMENT AND NEW CHALLENGES OF DEEP EXCAVATION SUPPORTING ENGINEERING IN GUANGDONG PROVINCE. , 2012, 31(11): 2276-2284.
[1] 周红星，曹 洪，尹小玲，等. 西溪电站厂房基坑承压水降压研究及实现 岩土力学，2004，25(增)：531–535.(ZHOU Hongxing，CAO Hong，YIN Xiaoling，et al. Research on pressure-relief of confined water in foundation pit for powerhouse of Xixi Channel Power Plant and practice[J]. Rock and Soil Mechanics，2004，25(Supp.)：531–535.(in Chinese))
[2] 丘建金，高 伟，周赞良，等. 超深基坑及超大直径挖孔桩施工对临近地铁变形影响分析及对策[J]. 岩石力学与工程学报，2012，31(6)：1 081–1 088.(QIU Jianjin，GAO Wei，ZHOU Zanliang，et al. Influence analysis and countermeasures for extra-deep foundation pit and extra-large digging pits construction on adjacent metro[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(6)：1 081– 1 088.(in Chinese))
[3] 杨光华，陆培炎. 深基坑开挖中考虑施工过程的多撑或多锚地下连续墙的增量计算法[J]. 建筑结构，1994，(8)：28–47.(YANG Guanghua，LU Peiyan. The incremental calculation method for the diaphragm wall with multi-brace or multi-anchor in deep excavation[J]. Building Structure，1994，(8)：28–47.(in Chinese))
[4] 杨光华. 深基坑支护结构的实用计算方法及其应用[M]. 北京：地质出版社，2004：63.(YANG Guanghua. The practical calculation method and its application for the retaining structure of the deep excavation[M]. Beijing：Geological Publishing House，2004：63.(in Chinese))
[5] 杨光华. 深基坑开挖中预应力锚杆或预应力支撑支护结构的计算分析[J]. 建筑结构，1996，(4)：9–12.(YANG Guanghua. The analysis of the retaining structure with prestressed anchor or prestressed brace in deep excavation[J]. Building Structure，1996，(4)：9–12.(in Chinese))
[6] 杨光华. 深基坑开挖中多支撑支护结构的土压力问题[J]. 岩土工程学报，1998，10(6)：113–115.(YANG Guanghua. The earth pressure problems for the multi-braced retaining structure of deep excavation[J]. Chinese Journal of Geotechnical Engineering，1998，10(6)：113–115.(in Chinese))
[7] 中华人民共和国行业标准编写组. SJG05—2011 深圳市基坑支护技术规范[S]. 北京：中国建筑工业出版社，2011.(The Professional Standards Compilation Group of People?s Republic of China. SJG05—2011 Technical code for retaining and protection of excavations in Shenzhen City[S]. Beijing：China Architecture and Building Press，2011.(in Chinese))
[8] 杨光华，张玉成，张有祥. 变模量弹塑性强度折减法及其在边坡稳定分析中的应用[J]. 岩石力学与工程学报，2009，28(7)：1 506– 1 512.(YANG Guanghua，ZHANG Yucheng，ZHANG Youxiang. Variable modulus elastoplastic strength reduction method and its application to slope stability analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(7)：1 506–1 512.(in Chinese))
[9] 吴舒界. 强度折减法的若干应用研究[硕士学位论文][D]. 广州：华南理工大学，2009.(WU Shujie. Certain application research of the strength reduction method[M. S. Thesis][D]. Guangzhou：South China University of Technology，2009.(in Chinese))
2012, Vol. 31 
