SEISMIC BEHAVIOR AND DESIGN METHOD OF ABNORMAL EXTERIOR JOINTS IN LARGE-SCALE THERMAL POWER PLANT
The large-scale thermal power plant main building commonly contained the abnormal exterior joints with the high beam and column section abrupt. Four 1/5 scale plane abnormal exterior joints and one space abnormal joint of reinforced concrete frame were tested in this paper. The factors affecting the shear failure mode of abnormal joints such as: transverse beam, the column section abrupt, the stirrup ratio of joints etc. Were presented. The experimental results indicated the abnormal joints crack load and the ultimate load decreased significantly contrast to those of ordinary joints.Furthermore, crack load were very closed to ultimate load and two typical failure modes were presented: minor core shear failure and the joint zone (under transverse beam) shear failure. Using the confine mechanism to express the minor core shear failure and the formula for calculation of the shear capacity for abnormal joints were given. Restraining the steel ratio on the bottom of high beam was effective to ensure the safety of the joint zone under transverse beam.
Abnormal exterior joint Seismic behavior Damage mechanism Design proposition
Tao Wu Bo-Quan Liu Guo-Liang Bai Hong-Xing Li
School of Civil Engineering, Changan University, Xian 710061, P.R. China School of Civil Engineering, Xian Univ. of Arch. & Tech, Xian 710055, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
472-477
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）