Based on the engineering example,discussion is given to the foundation selection of high-rise building in terms of technical and economical feasibilites,and introduction is made to the application characteristic of pump-absorption anti-cycle drilling bottom-enlarged grouting piles and its key construction techniques.
结合工程实例,从技术可行性和经济可行性两方面探讨高层建筑桩基础的选择,介绍泵吸反循环钻孔扩底灌注桩的应用特点及钻孔扩底灌注桩施工过程中的关键技术,并展望了钻孔扩底灌注桩的应用前景。
According to the engineering practice,introducing the technical points of drilling bottom-enlarged grouting pile,pointing out the technical measurements of prevention and treatment in the construction.
结合工程实例 ,阐述了钻孔扩底灌注桩的施工技术控制要点 ,并针对施工中常见的问题 ,提出了预防及处理的技术措
The paper presents an introduction to the function of the bell-out bored piles and machinery andequipment used for building these piles.
介绍了扩底钻孔灌注桩性能和施工机具,结合工程实例阐述了扩底钻孔灌注桩的施工工艺和施工注意事项,最后提出了对扩底钻孔灌注桩的认识。
Compared to artificial digging-hole pile, the pumping reverse-circulation under-reamed bored pile has higher adaptability to geological condition, and its construction is safety and reliability.
泵吸反循环钻孔扩底灌注桩与人工挖孔灌注桩相比,地质条件的适应性强,施工安全可靠。
In the paper, according to its success application in a tall building, the design and construction of under-reamed bored pile is debated in details.
本文结合钻孔扩底灌注桩在某工程中的应用情况,对钻孔扩底灌注桩设计、施工等应用方面进行了比较详细的介绍,指出该工法具有较好的经济效益。
According to successful application of bored pile in a tall building, construction principle of under-reamed bored pile is discussed in details.
结合钻孔扩底灌注桩在某高层建筑物基础中的成功应用,对钻孔扩底灌注桩的成桩原理进行了有关的阐述,认为扩底钻头的扩张角α≤25°为宜,且扩底高度范围内岩石层的饱和单轴抗压强度标准值一般不大于6MPa;同时在单桩竖向承载力的设计计算时,要求对桩身侧阻力与桩底端阻力进行相应修正。
Application of Under-reamed Bored Pile in a Bridge;
钻孔扩底灌注桩在桥梁基础工程中的应用
The application of boring and expanding bottom pile in treating high rise building foundation
钻孔扩底灌注桩在处理高层建筑地基中的应用
Experimental Study on Bearing Behavior of Bored Belled Piles in Strong Weathered Granite
强风化花岗岩中钻孔扩底灌注桩承载性状试验
Analysis and treatment on pile bore checking collapse accidents of large diameter bored perfusion pile
大口径钻孔扩底灌注桩在孔形检测时的塌孔分析及处理
Study on the Applied Credibility of Under-reamed Pile in Shenzhen and Its Peripheral Regions;
钻孔扩底灌注桩在深圳及其邻近地区应用可靠性的研究
Analysis on Stability Checking for Bearing Capacity of Bored and Club-footed Piles in Deep and Soft Foundation
浅析钻孔扩底灌注桩在深厚软基中承载力的稳定验算
Analyses on and Results of Post Grouting Design for Bottom Enlargement of Bored Piles
宜春市审计局综合楼钻孔扩底灌注桩加后压浆设计分析及应用效果
DEVELOPMENT AND APPLICATION OF UNDER-REAMED BORE PILE DRILLIED BY MECHNICAL ROTATING CUTTER
钻孔机械旋转刀扩底灌注桩的开发与应用
Construction Technology of Under-reamed Bored Pile in Guangzhou New TV Tower
广州新电视塔扩底钻孔灌注桩施工技术
Research of pile construction technology through borehole bottom expansion and after-grouting mortar injection
泵吸反循环钻孔扩底灌注后压浆桩施工技术研究
Construction Technology of Manual Holing Boring Piles with Manual Expanding Bottom Constructed with Long Spiral Drilling Machine in Wuhan Tianhe Airport Terminal
武汉天河机场航站楼长螺旋钻机成孔人工扩底灌注桩施工技术
Latter Cenent-inject Technique Reseach and Application for Underlying of a Big Diameter Drill-affusing Pile in Nerilic Pool Region;
滩涂区钻孔灌注桩桩底注浆技术的研究和应用
Bored Pile after Pile Grouting Technology and Construction Quality Control
钻孔灌注桩桩底后注浆技术及施工质量控制
Application of Injection Technology Under Pile to the Drilled Grouting Pile
桩底后注浆技术在钻孔灌注桩中的应用
Engineering Application in the Technology of Grouting after Pile Driving at Bottom of Pile;
钻孔灌注桩桩底后压浆技术的工程应用
Influence of Pile Bottom Sediment on the Bearing Property of Rock-socket Filling Pile
桩底沉渣对嵌岩钻孔灌注桩承载性状影响研究
Post pressure grouting of borehole cast-in-situ pile bottom and its quality control
钻孔灌注桩孔底后压浆施工工艺及质量控制
The bearing capacity characteristic value of a single pile can be increased greatly through post pressure grouting from pile sides and bottom.
通过对桩侧和桩底后压浆，可大幅度提高钻孔灌注桩单桩承载力。