- 摘 要
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（中鐵第五勘察設計院集團有限公司， 北京 102600）
［摘要］基于中國規(guī)范和英國規(guī)范的相關規(guī)定，結合斯里蘭卡南部鐵路的砌體結構設計實例，對中英兩國的砌體材料性能以及無筋砌體結構基本設計方法進行了比較。對比分析表明：英國規(guī)范給出的砌塊材料強度較高，砌體抗壓和沿通縫抗彎強度設計值較低；一般情況下英國規(guī)范對荷載安全分項系數(shù)取值較大且考慮偶然荷載組合，因而荷載設計值較大；英國規(guī)范對砌體高厚比的限制更嚴格；抗壓和抗彎驗算時，英國規(guī)范的抗力效應比小，安全儲備較高；抗剪驗算時英國規(guī)范更多地考慮了豎向荷載的有利影響，安全儲備低于中國規(guī)范；局部抗壓設計上兩國規(guī)范差異較大，中國規(guī)范更為經(jīng)濟。
［關鍵詞］設計規(guī)范; 無筋砌體; 安全儲備
中圖分類號：TU362文獻標識碼：A文章編號：1002-848X(2016)18-0104-06
Comparison study on unreinforced masonry design in Chinese and British masonry codes
Li Qi
(China Railway Fifth Survey and Design Institute Group Co., Ltd., Beijing 102600, China)
Abstract:Based on relevant regulations in Chinese and British codes for masonry structures and combining with the masonry structure design practice of south railway project in Sri Lanka, properties of masonry materials and general design methodologies of unreinforced masonry structures in Chinese and British codes were compared. Comparative analysis shows that, strength of masonry material in British code is higher, and masonry compressive strength design value and bending strength design value along the seam in British code is lower. In general, partial safety factors of design loads are higher and accidental load combination is considered in British code, so load design value is larger. Ratio of height to thickness of masonry structure is more restrictive prescribed in British code. Ratio of resistance to load calculated according to British code is lower in axial compression design and flexural design but with higher safety reserve. The British code considers more about the favorable influence of vertical load in shear calculation, and the safety reserve is lower than that of the Chinese code. The difference between Chinese and British codes is large in local compression design, and Chinese code is more economical.
Keywords:design code; unreinforced masonry; safety reserve
作者簡介：李啟，博士，工程師，Email: 403892114@qq.com。
