护栏板厂家批发

当大家谈到高速公路，首先想到的是高速公路两侧和中央隔离带的波形梁护栏，它是交通工程安全设施的最主要的部分之一。它是一种纵向吸能结构，其作用是通过自体变形或车辆爬高来吸收碰撞能量，从而改变车辆行驶方向、阻止车辆越出路外或进入对向车道、最大限度地减少对乘员的伤害。它的构成主要有：护栏板、圆立柱、防阻块、高强拼接螺栓、端头等。施工中常见的问题主要是：

When we talked about the highway, the first thought is the highway on both sides and the central isolation belt waveform beam fence, it is one of the most important part of the traffic engineering safety facilities. It is a longitudinal energy absorbing structure, its role is through the autogenous deformation or vehicle to climb high to absorb the collision energy, so as to change the direction of the vehicle, stop the vehicle more way or access to the lane, to maximize the reduction of occupant injury. The main structure of the guard rail board, the circular column, the block, the high strength bolt and the top head. The common problems in construction are:

(一)圆立柱的安装。根据《公路交通安全设施设计细则》JTG/T D81-2006中规定设置于土基中的B级二波波形梁护栏，立柱埋置深度应不小于125cm；设置于土基中的A级、Am级二波波形梁护栏，立柱埋置深度应不小于140cm；设置于石方、地下有管线等路段混凝土基础内的波形梁护栏，立柱埋置深度不应小于40cm。但在实际的施工中，由于路肩和中央分隔带下层情况复杂，如石砾较大（如山区施工等），经常出现立柱打入土中深度不够，有的地方三分之一路段立柱打不进去，如用浇置法施工费用较高，施工队往往采用夜间切割，减少立柱埋深的方法进行违章作业，。经切割过的立柱安装波形梁护栏后，根本达不到碰撞要求，也不能保证高速公路的行车安全。业主、监理及承包商应坚决杜绝这种现象的出现。发现一起严处一起，不留后患。只要业主、监理及承包商对施工现场稍多加注意，这个问题是很容易解决的。

Installation of (a) round column. According to "road traffic safety facilities design rules" JTG / D81-2006 provisions set in Subgrade in B the second wave shaped beam guardrail, post embedded depth shall be not less than the 125cm; arranged on Subgrade in class A, am the second wave shaped beam guardrail, post embedded depth shall not be less than 140 cm; set in stonework, underground pipelines and other sections of the concrete foundation of W-beam guardrail, post embedded depth should be not less than 40cm. But in actual construction, the kerbs and central dividers with lower complex, such as gravel larger (such as mountain area construction), often appear column play buried depth is not enough, some places third section column does not go to fight, such as use of cast set method higher construction costs, application technology team, often by night cutting, reducing depth of column method were illegal operations. After cutting off the column installed wave beam fence, not up to the requirements of the collision, but also can not guarantee the safety of the highway traffic. The owner, supervisor and contractor shall resolutely put an end to the appearance of this phenomenon. Found together Yanchu together, leaving no troubles. As long as the owner, supervision and contractor to pay more attention to the construction site, the problem is easy to solve.

(二)圆立柱丢失问题。有的路段土质松软，没有夯实，打进的圆立柱很容易丢失。更有甚者一个标段丢失1000多个圆立柱。即使这些圆立柱不丢失。能达到防撞要求吗？圆立柱丢失问题实际上还是施工质量问题。

(two) the loss of circular columns. Some sections of the soil is soft, no solid, the round column is easy to lose. What is more of a section of the loss of the more than 1 thousand round column. Even if these round columns are not lost. Can achieve collision avoidance requirements? The loss of circular column is actually the construction quality problem.

(三) 高强拼接螺栓问题。大家都知道高强拼接螺栓其力学性能等级应为GB/T1591规定的8.8级，抗拉荷载不小于133kN。表面上看，它只是护栏板、防阻块、圆立柱的连接部件，实际上它是整个安全设施防撞系统的关键，也就是心脏和薄弱部分。然而在安装的时候，有的施工人员不负责任，在调整线形后没有把高强拼接螺栓拧紧，这种情况在有些标段还很严重，使高速公路的波形梁护栏存在严重的安全隐患。

(three) high strength bolt problem. It is known that the mechanical properties of high strength bolts should be 8.8 grades of GB/T1591, and the tensile load is not less than 133kN. On the surface, it is only a fence, block, round column of the connection parts, in fact, it is the key to the safety of the entire system, is the key to the heart and the weak part of the system. However in the installation, some of the construction personnel irresponsible, after alignment adjustment not made of high-strength splice bolt tightening, this situation in some section is also very serious, the highway W-beam guardrail there are serious security hidden danger.

以上从生产、产品、设计、安装施工四个方面讲述了交通安全设施在高速公路建设中最常见的问题，而且是仍在继续发生的问题。

Above from the production, product, design, installation and construction of four aspects of the traffic safety facilities in the highway construction of the most common problems, but also continue to occur.

如何杜绝这些问题的发生，保证高速公路建设的质量，确保交通安全设施产品波形梁护栏在高速公路中发挥最大作用。

How to eliminate these problems, ensure the quality of highway construction, ensure the traffic safety facilities product wave beam fence in the highway to play the maximum effect.