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  吳  昊¹，  趙世春¹，  許  滸¹，  張蓬勃¹，  吳  剛²
  （1 西南交通大學(xué)土木工程學(xué)院，成都 610031；2 東南大學(xué)}昆凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點(diǎn)實(shí)驗(yàn)室，南京 210096）

[摘要] 通過5片縮尺橫墻試件的擬靜力試驗(yàn)對兩端設(shè)置構(gòu)造柱的普通橫墻試件和墻中增設(shè)附加構(gòu)造的組合墻體試件的破壞形態(tài)、滯回性能、抗倒塌性能以及附加構(gòu)造的作用機(jī)理等進(jìn)行了分析。結(jié)果表明，橫墻的破壞模式、耗能性能與構(gòu)造情況有關(guān)，附加構(gòu)造柱的存在改變了墻體的破壞模式，大幅提高墻體的抗剪承載力，但同時會降低墻體的延性耗能能力，當(dāng)在墻體中增設(shè)構(gòu)造柱和圈梁時，附加圈梁的拉結(jié)作用能夠進(jìn)一步提高墻體的主拉應(yīng)力抗剪強(qiáng)度，顯著改善嚴(yán)重破壞、嚴(yán)重變形條件下的整體性，使得墻體表面裂縫分散，主裂縫寬度減小，因此對于增強(qiáng)墻體的抗地震倒塌能力是有利的。研究結(jié)論可為新建磚混教學(xué)樓的抗特大地震倒塌設(shè)計(jì)提供試驗(yàn)依據(jù)。
[關(guān)鍵詞] 磚混教學(xué)樓；橫墻；附加構(gòu)造；破壞模式；耗能機(jī)制
中圖分類號：TU362    文獻(xiàn)標(biāo)識碼：A  文章編號：1002-848X(2012) Sl-0226-05

Damage characteristic analysis of transverse wall of brick concrete masonry school buildings with different structural measures
Wu Hao¹, Zhao Shichun¹, Xu Hu¹, Zhang Pengbo¹, Wu Gang²
(1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2 Key Laboratory of RC&PC Structures of the Ministry of Education, Southeast University, Nanjing 210096, China)

Abstract: Quasi-static tests of five scaled transverse wall specimens with different structural measures were conducted. The damage modes, hysteresis behavior, anti-collapse performance and the mechmusm and behavior of additional structural measures were analyzed. The results indicate that the damage characteristic and energy dissipation capacity of transverse wall specimens are largely dependent on the structural measures adopted. Additional structural column changes the damage mode and improves the bearing capacity of specimens, while decreases the energy dissipation capacity. The presence of additional structural column and ring beam, especially the tensile effect of additional ring beam enhances the integrity of walls under severely damaged conditions, improves the principal tensile stress shear strength and ensures better distribution of cracks, wluch is of crucialimportance to the anti-collapse capacity of wall members. Some references can be provided for the anti-collapse design of new brick concrete teaching buildings under rare earthquake.
keywords: brick concrete school buildings; transverse wall; additional structural measures, damage model; energy dissipation mechanism