横向多重配箍约束混凝土的计算方法

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1.
1. 清华大学土木工程系北京 100084;
2.
2. 广东省建筑设计院广州 520000;
3.
3. Dept. of Civil Eng. University of Southern California Los Angeles CA 90089 USA

基金项目:

国家杰出青年基金海外青年学者合作基金资助项目(50128807)

CALCULATION METHOD FOR CONFINED CONCRETE WITH MULTIPLE LATERAL HOOPINGS

1.
1. Department of Civil Engineering,Tsinghua University Beijing 100084;
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2. Architectural Design Institute of Guangdong Provice Guangzhou 520000;
3.
3. Dept.of Civil Eng.,University of Southern California,Los Angeles,CA 90089,USA

摘要: 混凝土在横向应力约束下，侧向膨胀变形受到限制，强度和变形能力得到提高，为了满足梁柱节点区截面强度和刚度的要求，横向多重配箍在工程中得到了应用。从现有约束混凝土原理出发，推导了约束混凝土在横向多重配箍下强度的两种计算方法，并通过对比得出了两种方法各自的合理适用范围。
- 约束混凝土 /
- 横向多重配箍 /
- 名义配箍特征值 /
- 实际配箍特征值
Abstract: Due to compression in three-axis, the ductility and strength of concrete confined by lateral circular hoopings become much higher.In the need of strength and stiffness in local section, multiple lateral hoopings confined concrete is applied into practice, such as beam-column joints, etc.From the existing principle of confined concrete, two methods are proposed on the strength prediction of confined concrete with multiple lateral hoopings.The suitable scope of application of each one is derived through comparison.
- confined concrete /
- multiple lateral hoopings /
- nominal confinement eigenvalue /
- actual confinement eignvalue