（1 江苏省结构工程重点实验室(苏州科技学院)，苏州 215011；2 西安建筑科技大学土木工程学院，西安 710055）
［摘要］为研究型钢轻骨料混凝土梁的正截面受弯承载力，进行了8根型钢轻骨料混凝土梁和2根型钢普通混凝土梁的受弯性能试验。根据对型钢普通混凝土梁正截面受弯承载力的分析结果，提出了型钢轻骨料混凝土梁正截面受弯承载力计算的修正型钢规程法和叠加法。8根型钢轻骨料混凝土试验梁的受弯承载力实测值与修正型钢规程法计算值之比的平均值为1.042，变异系数为0.039；与叠加法计算值之比的平均值为1.039，变异系数为0.039，证明采用修正型钢规程法和叠加法来计算型钢轻骨料混凝土梁的正截面受弯承载力是可行的。
［关键词］型钢轻骨料混凝土；梁；受弯承载力；计算方法
Experiment and calculation of bending strength of steel reinforced lightweight aggregate concrete beams
Liu Fan1, Weng Xiaohong1, Shao Yongjian1,2, Zhao Hongtie2, Yin Zhiwen1(1 Jiangsu Key Laboratory of Structure Engineering(University of Science and Technology of Suzhou), Suzhou 215011, China;2 School of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China)
Abstract:In order to study bending strength of steel reinforced lightweight aggregate concrete(SRLC) beams, eight SRLC beams and two steel reinforced normal density concrete beams were tested. “Up-dated directive rules of SRC structures” and “superposition method” of the calculation for the normal section bending strength of SRLC beams are presented on the basis of the comparison and analysis of calculation theory of the normal section bending strength of steel reinforced normal density concrete beams. The average of the ratios of the measured values to the calculation values according to “up-dated directive rules of SRC structures” is 1.042, and the mutant factor is 0.039. The average of the ratios of the measured values to the calculation values according to the superposition method is 1.039, and the mutant factor is 0.039. As a result, it is feasible to adopt “up-dated directive rules of SRC structures” and superposition method to calculate the normal section bending strength of SRLC beams.
Keywords:steel reinforced lightweight aggregate concrete(SRLC); beams; bending strength; calculation method
建设部科技研究项目(01-2-20)。作者简介：刘凡(1965-)，男，副教授，工学硕士。
参考文献
［1］邵永健，赵鸿铁.型钢混凝土梁正截面受弯承载力计算理论的对比分析［J］.西安建筑科技大学学报，2006，38(3)：374-378.
［2］赵鸿铁.钢与混凝土组合结构［M］.北京：科学出版社，2001.
［3］AISC. Load and Resistance Factor Design Specifications for Structural Steel Buildings［S］. Chicago:American Institute of Steel Construction，1999.
［4］Commission of European Communities.EUROCODE 4, Common Unified Rules for Composite Steel and Concrete Structures［S］.Brussel: European Committee for Standardization, 1985.
［5］CHARLES W ROEDER. Composite and Mixed Construction［M］. NewYork:ASCE.1985.
［6］R P JOHNSON. Composite Structures of Steel and Concrete［M］. OXFORD: Blackwell Scientific Publications, 1995.
［7］日本建筑学NFDA3.NFDA4NFDA6NFDA4筋コンクリト构造计算规NFDA5·同NFDA7说［S］ .东京:日本建筑学会,2001.
［8］叶列平，方鄂华.钢骨混凝土构件的受力性能研究综述［J］.土木工程学报，2000，33(5):1-12.
［9］蔡健，郑宇，杨春，等.箱形型钢混凝土梁的试验研究［J］.华南理工大学学报，2002，30(7):52-56.
［10］徐澄，袁必果.劲性钢筋混凝土梁短期刚度的试验研究［J］.东南大学学报，1991，21(6):77-83.
［11］王向峰，张仲先，阮成堂，等.钢骨混凝土梁的受弯性能试验研究［J］.特种结构，2002，19(1):1-4.
［12］JGJ138—2001/J1302001型钢混凝土组合结构技术规程［S］.北京：中国建筑工业出版社，2002.
［13］GB50068—2001建筑结构可靠度设计统一标准［S］.北京：中国建筑工业出版社，2001.
［14］JGJ12—2006轻骨料混凝土结构技术规程［S］.北京：中国建筑工业出版社，2006.
［15］李少泉，沙镇平.钢骨混凝土正截面承载力计算的叠加方法［J］.土木工程学报，2004，37(7):1-5.
［16］YB9082—97钢骨混凝土结构设计