邵永健1，2，劉凡2，翁曉紅2，趙鴻鐵1，殷志文2，夏敏2（1 西安建筑科技大學(xué)土木工程學(xué)院，西安 710055； 2 江蘇省結(jié)構(gòu)工程重點(diǎn)實(shí)驗(yàn)室(蘇州科技學(xué)院)，蘇州 215011）
［摘要］為研究型鋼輕骨料混凝土梁撓度及裂縫寬度的計(jì)算方法，對(duì)8根型鋼輕骨料混凝土試驗(yàn)梁的撓度及裂縫寬度進(jìn)行了分析，提出了型鋼輕骨料混凝土梁剛度計(jì)算的“修正鋼骨規(guī)程法”和裂縫寬度計(jì)算的“修正型鋼規(guī)程法”。當(dāng)試驗(yàn)荷載分別為0.3Pu，0.5Pu和0.7Pu時(shí)，按修正鋼骨規(guī)程法計(jì)算得到的8根試驗(yàn)梁的撓度值與試驗(yàn)實(shí)測值的比值，其平均值分別為1.051，1.090和1.065；按修正型鋼規(guī)程法計(jì)算得到的8根試驗(yàn)梁的裂縫寬度與試驗(yàn)實(shí)測值的比值，其平均值分別為1.066，1.016和1.045。可見型鋼輕骨料混凝土梁用修正鋼骨規(guī)程法來計(jì)算撓度和用修正型鋼規(guī)程法來計(jì)算裂縫寬度是可行的。
［關(guān)鍵詞］型鋼輕骨料混凝土；梁；撓度；裂縫寬度；計(jì)算方法
Calculation of deflection and crack width of steel reinforced lightweight aggregate concrete beams
Shao Yongjian1，2, Liu Fan2, Weng Xiaohong2, Zhao Hongtie1, Yin Zhiwen2, Xia Min2(1 School of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China; 2 Jiangsu Key Laboratory of Structure Engineering(University of Science and Technology of Suzhou), Suzhou 215011, China)
Abstract:In order to study the calculation method of the deflection and crack width of steel reinforced lightweight aggregate concrete beams, the deflection and crack width of eight SRLC testing beams were analyzed. “Updated directive rules of SRC structures” used by stiffness calculation and crack width calculation were presented. When the test loads were 0.3Pu, 0.5Pu and 0.7Pu, the averages of the ratios of the calculation values according to “up-dated directive rules of SRC structures” to the measured values for the deflection of eight SRLC testing beams were 1.051, 1.090 and 1.065 respectively, and the averages of the ratios of the calculation values according to “up-dated directive rules of SRC structures” to the measured values for the crack width of eight SRLC testing beams were 1.066, 1.016 and 1.045 respectively. As a result, it was feasible to adopt “up-dated directive rules of SRC structures” to calculate the deflection and crack width of SRLC beams.
Keywords:steel reinforced lightweight aggregate concrete(SRLC); beams; deflection; crack width; calculation method
建設(shè)部科技研究項(xiàng)目(01-2-20)。作者簡介：邵永健(1963-)，男，浙江湖州人，教授，工學(xué)博士。Email:shaoyong@usts.edu.cn。
參考文獻(xiàn)
［1］劉凡，邵永健，等. 型鋼輕骨料混凝土梁正截面受彎承載力的試驗(yàn)與計(jì)算［J］.建筑結(jié)構(gòu)，2009，39(6).
［2］YB 9082—97鋼骨混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)程［S］.北京：冶金工業(yè)出版社，1998.
［3］JGJ 138—2001/J130 2001型鋼混凝土組合結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：中國建筑工業(yè)出版社，2002.
［4］姜維山，趙世春，孫慧中，等.型鋼混凝土結(jié)構(gòu)構(gòu)件的研究［J］.建筑鋼結(jié)構(gòu)進(jìn)展，2002，4(3):41-46.
［5］GB 50010—2002混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國建筑工業(yè)出版社，2002.
［6］JGJ12 —2006輕骨料混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：中國建筑工業(yè)出版社，2006.
