| 桥梁护栏是指设置于桥梁上的护栏 |
| 添加时间：2020/8/21 13:44:27 浏览次数： |
| 桥梁护栏是指设置于桥梁上的护栏。其目的是为了防止失控车辆越出桥外，具有使车辆不能突破、下穿、翻越桥梁以及美化桥梁建筑的功能。划分桥梁护栏的类型方法很多，除按设置位置划分外，还可按构造特征、防撞性能等划分。按设置位置可分为桥侧护栏、桥梁中央分隔带护栏和人行、车道分界处护栏；按构造特征可分为梁柱式(金属制和混凝土)护栏、钢筋混凝土墙式扩栏和组合式护栏；按防撞性能可分为刚性护栏、半刚性护栏和柔性护栏。一般常见的护栏形式有混凝土护栏、波形梁护栏和缆索护栏。桥梁护栏形式的选择，首先应根据公路等级，综合考虑其安全性、协调性、需防护对象的特性及现场几何条件等因素确定防撞等级，然后再根据本身结构、经济性以及施工和养护维修等因素进行构造形式的选择。其埋置方式有立柱直接埋入式、法兰盘连接式和通过传力钢筋把桥梁护栏和桥面板浇注成一体三种方式，条件许可时，可采用抽换式护栏。 Bridge guardrail refers to the guardrail set on the bridge. Its purpose is to prevent out of control vehicles from crossing the bridge, which has the function of preventing the vehicle from breaking through, passing under, crossing the bridge and beautifying the bridge construction. There are many methods to divide the types of bridge guardrails, which can be divided according to the location, structural characteristics and anti-collision performance. According to the setting position, it can be divided into Bridge side guardrail, bridge central partition belt guardrail and pedestrian and lane boundary guardrail; according to the structural characteristics, it can be divided into beam column type (metal and concrete) guardrail, reinforced concrete wall type expansion fence and combined guardrail; according to the anti-collision performance, it can be divided into rigid guardrail, semi-rigid guardrail and flexible guardrail. The common forms of guardrail are concrete guardrail, corrugated beam guardrail and cable guardrail. For the selection of bridge guardrail form, the anti-collision grade should be determined according to the highway grade, considering the safety, coordination, characteristics of the object to be protected and the site geometric conditions, and then the structural form should be selected according to its own structure, economy, construction and maintenance. There are three ways of embedding: column directly embedded, flange connection and pouring bridge guardrail and bridge deck into one by force transfer reinforcement. If conditions permit, the replacement guardrail can be used. |
| 上一页 电动伸缩门详细解说 |
| 下一页 防眩护栏板构造 |
Copyright © 技术支持：遨游网络