摘要
在分析了各种类防撞护栏的优缺点的基础上,结合城市桥梁的特点以及景观需求,同时考虑护栏的防护等级,建议城市跨线桥梁的防撞护栏采用组合式护栏。针对某城市跨线桥的防撞护栏设计,按照规范要求,应用屈服线理论对组合式护栏的防撞能力进行验算,由验算结果可知,该类型组合式护栏强度满足受力要求,且具有一定的推广价值。
On the basis of analyzing the advantages and disadvantages of various crash-proof guardrails,combined with the characteristics of urban bridge and the demand of landscape,and also considering the protection level of guardrail,it is proposed that the crash-proof guardrail of urban overpass should be the composite guardrail.Aiming at the design of crash-proof guardrail for an urban overpass,according to the code requirements,the crash-proof capacity of composite guardrail is checked and calculated by using the yield line theory.The checking calculation result shows that the strength of this kind of composite guardrail meets the stress requirement and has some promotional values.
作者
王英
杜明峰
张大伟
WANG Ying;DU Mingfeng;ZHANG Dawei
出处
《城市道桥与防洪》
2020年第3期98-99,M0012,共3页
Urban Roads Bridges & Flood Control
