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(太原理工大學建筑與土木工程學院, 太原 030024)
[摘要]為了提高樁與承臺連接節(jié)點的承載力,對管樁進行勁性填芯,并對勁性填芯管樁及普通填芯管樁進行室內節(jié)點抗震性能試驗,對比分析了兩種管樁在水平往復荷載作用下的荷載-位移曲線、荷載-應變曲線、裂縫發(fā)展情況及抗彎能力。結果表明,勁性填芯能夠使錨固鋼筋和管樁更好地發(fā)揮其性能,且能大幅度提高樁與承臺連接節(jié)點的水平承載力、位移及延性。
[關鍵詞]勁性填芯管樁; 樁基; 水平往復荷載; 節(jié)點; 承載力
中圖分類號:TU473.1+2 文獻標識碼:A 文章編號:1002-848X(2014)17-0075-04
Experimental research on seismic performance of steel composite filling core pipe pile joints
Zhang Wei, He Wubin, Guo Zhaosheng, Bai Xiaohong
(College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)
Abstract: To improve the bearing capacity of the connection joint between pile and pile cap, the pipe pile was filled with steel. The indoor seismic performance experiments were carried out on the steel composite filling core pipe pile and common material composite filling core pipe pile respectively. Comparison analyses were carried out on the load-displacement curve, the load-strain curve, crack development situation and the resistance to bending of two kinds of piles under the horizontal reciprocating load. The results show that steel composite filling core can not only make performances of the anchorage rebar and pipe pile play well, but also improve the horizontal bearing capacity, ductility and displacement of the connection joint between pile and pile cap greatly.
Keywords:steel composite filling core pipe pile; pile foundation; horizontal reciprocating load; joint; bearing capacity
*山西省留學人員科技活動擇優(yōu)項目(80010402020028)。
作者簡介:張偉,碩士研究生,Email:507161644@qq.com。
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