qq安全模式解除浅谈桥面附属设施设计玩物丧志的意思
摘要：位于城镇和市郊等人口稠密地区的桥梁，均应设置人行道、栏杆、护栏与灯柱；位于城镇以外行人稀少地区的桥梁，可以不设人行道和灯柱，但必须设置栏杆、安全带或护栏。这些设施虽然并不直接参与桥梁结构的受力，但它们对于车辆和行人的安全，以及桥梁的美观有着重要的作用。
abstract：罐头瓶盖打不开怎么办 for the bridge which is located in denly populated areas such as towns and suburban， the sidewalks， railings， fence and lamp post should be t； for the bridge which is located out of towns other than the few pedestrians， you can not t up the sidewalks and lamp posts， but the railings， safety belts or guardrail must be t. although the facilities are not directly involved in the force of the bridge structure，可乐鸡翅的家常制作方法 they have an important role in the safety of vehicles and pedestrians，青黑色 as well as the aesthetics of the bridge.
明星图片女关键词： 桥梁工程；栏杆；人行道；护栏；灯柱；设计原则
高一化学必修一
key words： bridge engineering；railings；sidewalk；fence；lamppost；design principles
仿写句子怎么写
中图分类号：u44 文献标识码：a 文章编号：1006-4311（2012）34-0068-02
