摘要
在很多实际施工中,由于现场施工的场地限制,常常会采用异形板作为临时的运送通道。因此,对临时异形板进行受力分析,得到相应的最大弯矩点位置,研究表明:异形板长短边之比越大,其弯矩相对分散,狭窄区域的边界弯矩值接近最大弯矩,且容易产生裂缝,裂缝也普遍偏大;在相同荷载条件下的梁板受力,越规则,长短边比越接近于1的板弯矩越集中,四周弯矩较小。因此,在要设置临时梁板时,可考虑设置异形板,但要加强其狭窄区域和边界的连接,但不能长期使用,易产生较大裂缝。
In many practical construction,special-shaped plates are often used as temporary transportation channels due to the site constraints of on-site construction.Therefore,in this paper,the stress analysis of the temporary special-shaped slab will be carried out to obtain the corresponding position of the maximum bending moment point.The research shows that the larger the ratio of the long and short sides of the special-shaped slab is,the bending moment is relatively scattered,the boundary bending moment value in the narrow area is close to the maximum bending moment,and cracks are easy to occur,and the cracks are generally large;Under the same load conditions,the more regular the stress of the beam and slab,the closer the long short side ratio is to 1,the more concentrated the bending moment of the slab,and the smaller the bending moment around it.Therefore,when setting temporary beams and slabs,special-shaped slabs can be considered,but the connection between narrow areas and boundaries should be strengthened,but they can not be used for a long time,which is easy to produce large cracks.
作者
丁加亮
丁慧文
曹敏
冯白喜
潘建平
张瑞琳
滕伟
黄锋
Ding Jialiang;Ding Huiwen;Cao Min;Feng Baixi;Pan Jianping;Zhang Ruilin;Teng Wei;Huang Feng(China Railway Tunnel Bureau No.3 Co.,Ltd.,Shenzhen 512205,China;School of Civil Engineering&Architecture,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《科学技术创新》
2022年第15期110-113,共4页
Scientific and Technological Innovation
关键词
异形板
最大弯矩
裂缝
边界
Special shaped plate
Maximum bending moment
Cracks
Boundary
