摘要
为研究企口现浇装配预制梁承载能力和变形性能,制作3根企口现浇装配预制梁和1根整浇梁进行抗弯承载力试验.通过比较装配预制梁和整浇梁的力学参数,探究现浇企口受力及变形规律,找出其局部刚度变化规律.试验结果表明:现浇企口对装配预制梁的承载力影响不大,挠度基本呈线性变化趋势,变形能力满足设计规范要求,弯矩最大处对连接点最不利;现浇企口处局部刚度在受力前期下降较为明显,后期较为缓慢.
Three same size assembly precast beam with cast-in-place groove and one general integral beam were used to test the groove and bearing capacity. Through investigating the mechanical parameters, deoxidation ability and modification ability, the stress of groove and change law of local stiffness were identified. The results show that cast-in-place groove has little effect on bearing capacity of assembly precast beam, deformability meets the design specifications requirement, the congruent position of bending moment in maxima is the worst for junction. The local stiffness of cast-in-place groove decreases fast at the beginning of loading.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2017年第8期807-811,共5页
Journal of Liaoning Technical University (Natural Science)
基金
辽宁省科学事业公益研究基金(2015004019)
中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2014-199)
关键词
装配梁
企口现浇
抗弯性能
破坏过程
极限承载力
变形性能
assembly beam
cast-in-place groove
destruction process
flexural behavior
ultimate bearing capacity
