日期:2025-06-04 点击数:260
道路护栏有阻隔波形护栏板和防撞波形梁护栏板两大类。阻隔波形梁护栏板按其所设方位和效果可分为人行波形梁护栏、机非阻隔波形梁护栏、中心分割波形梁护栏板和阻隔删(网)。人行波形梁护栏板设于人行道外侧,以避免行人横穿车行道:机非阻隔波形梁护栏板设置于机分外车道边缘以分隔机动车和非机动车;中心分隔波形梁护栏板是为确离对向行进车辆而设置的;阻隔橱设置在高速公路的公路用地外缘,以阻挠人、畜进人公路和侵占公路用地。

阻隔波形梁护栏板一般用水泥混凝上预制块、型钢、混凝土与型钢组合拼装而成,金属栅(网)工厂化生产。现场装置施工时,应注意做到:
(1)定位正确,线形顺直,曲线部分圆顺。顶高一致无高低起伏。
(2)立柱与地面垂直,锚固螺栓拧固。若是埋人式立柱,埋入长度有必要足够,坞垮牢困:
(3)立柱和隔栅违接紧密无松动,隔栅与隔栅之间的边框线应保持平行、竖直,高低一致。
(4)钢管现场捍接,焊接处不得开裂、搭焊、烧穿及错位。焊接处的焊渣、毛刺应予清除。
(5)油漆有必要均匀,无翻漆、结块、脱皮和皱纹等现象出现。
防撞波形梁护栏板的效果是为了避免头控车辆越出路外和驶人对向行进车道,它设里于路侧、中心分隔带和桥梁上。防撞波形梁护栏有阴性、半刚性和柔性波形梁护栏三种结构方式。刚性波形梁护栏常见为以必定形状的混凝土块相互连接而组成的绪式结构,它利用失控车辆碰篷后爬高转历来吸收磕碰能且。柔性波形梁护栏板为具有较大缓冲能力的韧性波形梁护栏板结构,其代表为缆索波形梁护栏板,缆索护栏是数报施加必定初张力的缆索固定于立住上的结构,它主要依靠缆索的拉应力来抵抗车辆的碰摸倦级。半刚性护栏是一种违续的梁柱式护拦结构,具有必定的刚度和柔性。波形梁护栏是半刚性护栏的主要代表方式,它是一种以波纹状钢护栏板相互拼接并由立柱支撑而组成的连续结构,它利用土基、立柱、波形梁的变形来吸收磕碰能量,并迫使失控车辆改变方向。在这三种结构方式防撞波形梁护栏板中,半刚性的波形梁护栏板使用最广,使用长度占总量的90%以上。
波形梁的所有构件—波形梁、立柱、横隔梁、端头梁、防阻块及连接场栓均为钢制(常为一般碳素结构钢)。一般选用热浸锌作防腐处理。波形梁护栏板的护栏面不得侵人车道限界以内,立住埋人深度为1.lm(在有路缘石时为1.25m),若埋人混凝土中(C15以上)则埋人深度可减至40cm,立往间距为4m(一般型)和2m(加强型),波形梁中心距路面(或路缘石)距离为60cm。
波形梁护栏板的装置一般在路面完成后进行。但设置于桥梁、通道上的护拦,其基础应预先施工。在波形梁护栏板装置施工时,应注意不得玻坏已铺好的路面及其下埋设的电缆、管道等设备。
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