登录
注册
E-alert
登录
注册
E-alert
DX PILE AND ITS SEVERAL PROBLEMS OF VERTICAL BEARING CAPACITIES
-
摘要: 对DX挤扩灌注桩的产生、类型、特点、承力盘(岔)设置原则、极限承载力的综合评价、竖向抗压承载力的计算、桩身强度验算及DX液压挤扩装置的构造给予介绍。依据24根DX挤扩灌注桩和3根大比例尺现场模型DX桩的静载荷试验的资料，系统阐述DX桩轴力传递的规律和特点；详细论述在极限状态和工作状态时总侧阻力、总盘端阻力和总桩端阻力的发展及分配规律以及桩身各分段单位侧阻力；承力盘单位盘端阻力和单位桩端阻力的发展规律。并对DX挤扩灌注桩与等直径钻孔灌注桩的荷载传递机理及抗压和抗拔承载力机理进行对比。最后对如何保证实施完整的静载荷试验，以获得有用的荷载传递资料给予论述。Abstract: It is introduced that the derivation,types,characteristics,principles for the location of the bulbs and branches,comprehensively estimating method for ultimate bearing capacity,calculation formula of vertical compressional bearing capacity,calculation formula of compressive bearing capacity of shaft of DX pile and structure of DX extruding device.Through the static loading tests for 24 DX piles and 3 DX piles with large scale field model,where the reinforcement stress detectors or electrial resistance strain gauges were embedded,the regular patterns and characteristics of mechanisms of bearing capacity of DX piles are systemically studied,and the developments and the distributions of the skin-friction resistances,the bulb resistances and the tip resistances under ultimate and working conditions are detailedly analysed,the developments of the unit skin-friction resistances of each sections of DX piles and the unit bulb resistances and the unit tip resistances of DX piles are systemically studied.The differences of load transfer mechanisms between DX piles and uniform bored piles,and the differences of mechanisms between compressive and tensional DX piles are also comparatively analysed.Finally,how to guarantee the static loading test so that to obtain the full useful data of the mechanisms of bearing capacities also are indicated.
-
[2] 沈保汉,贺德新,刘振亮,等.DX多节挤扩桩的产生及特点[J].工业建筑,2004,34(3):1-4; 沈保汉,贺德新.DX挤扩灌注桩与DX液压挤扩装置[J].工业建筑,2008,38(5):1-4; [3] 沈保汉.DX挤扩灌注桩竖向抗压极限承载力的确定[J].工业建筑,2008,38(5):13-17,27; [4] 沈保汉,孙君平,王衍,等.DX挤扩灌注桩竖向抗压承载力的计算[J].工业建筑,2008,38(5):18-22; [5] 沈保汉,钱力航,孙君平.DX挤扩灌注桩的桩身承载力研究[J].工业建筑,2008,38(5):23-27; [6] 沈保汉,王衍,刘振亮,等.南阳HNR热电厂工程单节和两节DX挤扩灌注桩的试验研究[J].工业建筑,2009,39(2):27-38; [7] 沈保汉,王海燕,孙君平,等.唐山HTW电厂工程单节和两节DX挤扩灌注桩的试验研究及其应用[J].工业建筑,2009,39(2):16-26; [8] 沈保汉,王衍,赵辉,等.北京BGFD风电场两节DX挤扩灌注桩抗压和抗拔承载力机理的试验研究[J].工业建筑,2009,39(2):46-55; [9] 沈保汉,兰岚,王衍,等.河南HMQ电厂两节DX挤扩灌注桩的试验研究[J].工业建筑,2009,39(2):39-45; [10] 沈保汉,王海燕,刘振亮,等.西安SXD工程4节承力盘DX挤扩灌注桩的试验研究[J].工业建筑,2009,39(2):1-7; [11] 沈保汉,王衍,周青春,等.武汉WW工程四节DX挤扩灌注桩的试验研究和应用[J].工业建筑,2009,39(2):8-15; [12] 沈保汉,王衍,齐迪,等.内蒙NBZK电厂三节和四节DX挤扩灌注桩的试验研究[J].工业建筑,2009,39(2):57-64; [13] 陈轮,王海燕,沈保汉,等.DX桩承载力及荷载传递特点的现场试验研究[J].工业建筑,2004,34(3):5-8; [14] 沈保汉,陈轮,王海燕,等.DX桩侧阻力和端阻力的现场试验研究[J].工业建筑,2004,34(3):9-14,29; [15] 陈轮,沈保汉,王海燕,等.DX桩单位侧阻力和单位端阻力的现场试验研究[J].工业建筑,2004,34(3):15-18,39; [16] 沈保汉,陈轮,王海燕,等.DX桩荷载传递机理的现场试验研究[C]//2004海峡两岸地工技术岩土工程交流研讨会论文集(大陆卷).中国台北:2004:278-291; [17] 沈保汉.DX挤扩灌注桩的荷载传递特点[J].工业建筑,2008,38(5):5-12; [18] 沈保汉.单桩容许承载力[J].工业建筑,1991,21(8):52-58; [19] 沈保汉.桩的荷载传递的理论分析方法[J].工业建筑,1991,21(2):47-53; [20] 沈保汉.桩基与深基坑支护技术进展[G].北京:知识产权出版社,2006:19-39; [21] JGJ 1712009三岔双向挤扩灌注桩设计规程[S]; [22] GB 500102002混凝土结构设计规范[S]; [23] JGJ 1062003建筑基桩检测技术规范[S]. -
点击查看大图
计量
- 文章访问数: 61
- HTML全文浏览量: 6
- PDF下载量: 77
- 被引次数: 0
下载:
