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(天津大學建工學院，天津 300072)

［摘要］針對弦支筒殼結(jié)構(gòu)的特點，采用基于響應面函數(shù)的蒙特卡羅法，研究了溫度作用下弦支筒殼結(jié)構(gòu)的可靠性能，并對其承載力和變形兩種失效模式下的可靠性進行了分析。計算分析表明：溫度作用下，索材不同時，尤其是位移失效模式下的可靠度結(jié)果差別較大；拉索為鋼絲束時的可靠度變化幅度較大，索體為鋼拉桿和鋼絞線時的可靠度變化幅度較小；拉索為鋼絲繩時的可靠度則較其他索材均有所降低。在進行設計時，需要考慮選取不同索材所造成的預應力損失的影響。

［關鍵詞］弦支筒殼；溫度作用；拉索；預應力損失；可靠度

Research on reliable performance and temperature impact of cable supported barrel vault with different cable types

Chen Zhihua, Liu Zhansheng, Qiao Wentao, Yan Xiangyu(School of Civil Engineering, Tianjin University, Tianjin 300072, China)

Abstract:Aiming at the newly advanced characteristics concerning the structure of cable supported barrel vault, the Monte Carlo simulation on the response surface was applied. The reliable performance research of cable supported barrel vault considering temperature impact was carried out, and the reliability of two failure modes under strength and displacement was analyzed. The results indicate that the change of cable type has a great impact on the reliability of structure especially on the displacement failure modes. The range of reliability is large when steel tendon cable is chosen, but it is weak when choose steel strand cable and steel rod. The reliability value is lower than any other cables when steel wire rope cable is chosen. Therefore, it is necessary to consider the influences of prestress losses with different cable types in the process of design.

Keywords:cable supported barrel vault; temperature action; cable; prestress loss; reliability

國家自然基金資助項目(50778122)，新世紀優(yōu)秀人才支持計劃資助(NCET-06-0228)。

作者簡介：陳志華，博士，教授，Email:zhchen@tju.edu.cn。

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