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(1 天津大學(xué)建筑工程學(xué)院，天津 300072； 2 山東建筑科學(xué)研究院，濟(jì)南 250031)

［摘要］通過對實(shí)際工程中18根195m雙跨后張有粘結(jié)部分預(yù)應(yīng)力混凝土連續(xù)梁進(jìn)行施工張拉階段和模擬使用階段的工程實(shí)測，結(jié)合我國設(shè)計(jì)規(guī)范和計(jì)算機(jī)程序，分析和探討了摩擦系數(shù)的取值、混凝土截面應(yīng)變分布、側(cè)向約束的影響等，得出一些有益的結(jié)論，希望對工程設(shè)計(jì)和施工有所幫助。

［關(guān)鍵詞］粘結(jié)；部分預(yù)應(yīng)力；摩擦系數(shù)；側(cè)向約束；實(shí)測

A measured study of posttensioning bonded prestressed concrete continuous beam

Yang Jianjiang¹, Liu Zhi² (1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Shandong Provincial Academy of Building Research, Jinan 250031, China)

Abstract:Based on the measured construction research at its stretching stage of a two-span, post-tensioning bonded partially prestressed concrete continuous beam, the value of friction coefficient, the strain in the concrete beam´s cross-section, and the effect of lateral restraint are analyzed and discussed. The conclusions can be helpful for engineering design and construction.

Keywords:bonded; partially prestressed; friction coefficient; lateral restraint; measure