基坑临边护栏又叫基坑防护网、基坑防护栏、基坑临边防护栏、建筑工地护栏等。在建筑施工开始首要是挖地基把挖好的基坑围护起来，防止施工意外的发生，确保在建筑施工时无事故发生，保证施工进度正常建设。

Foundation pit edge guardrail, also known as foundation pit protective net, foundation pit guardrail, foundation pit edge guardrail, construction site guardrail, etc. At the beginning of construction, the first priority is to excavate the foundation and enclose the excavated foundation pit to prevent construction accidents, ensure that no safety accidents occur during construction, and ensure the normal construction progress.

在安装前的基坑临边护栏一般是建设形成的较低的砖或混凝土浇筑与防护栏使用机械膨胀螺栓、化学螺丝检查和其他方法来中心支柱钢衬部分降低基础直线。如果没有形成较低的墙体底板，可以将钢衬的长度直接埋在墙内，并在墙的养护期后正式施工。或者是提前做预制件，将预制件与预制件焊接在柱内。这样的方法比螺栓链接更加牢固，但前提是假定的，施工时必须要注意直线和水平线，钢柱与钢衬之间的距离与设计尺寸一致，以保半成品能与之相连。

Before installation, the edge guardrail of the foundation pit is generally constructed by pouring lower bricks or concrete and using mechanical expansion bolts, chemical screws for inspection, and other methods to solve the problem of lowering the foundation straight line of the steel lining part of the central pillar. If a lower wall bottom plate is not formed, the length of the steel lining can be directly buried inside the wall and officially constructed after the wall's curing period. Alternatively, prefabricated components can be made in advance and welded to the column. This method is more secure than bolted connections, but the premise is that during construction, attention must be paid to straight and horizontal lines, and the distance between the steel column and the steel lining should be consistent with the design dimensions to ensure that the semi-finished product can be connected to it.

在直线上画上两条平行线，使整个断面作为安装和调整的基准，安装后确保基坑防护栏上下端平整。在工地建立之前已经安装基坑防护栏的十字和钢衬，每个轴承的加强部分也安装到位。在现场施工时只需要将基坑防护栏衬垫与立柱相连即可。

Draw two parallel lines on the straight line, making the entire section the benchmark for installation and adjustment. After installation, ensure that the upper and lower ends of the foundation pit protective fence are flat. Before the construction site is established, the cross and steel lining of the foundation pit guardrail have been installed, and the reinforcing parts of each bearing have also been installed in place. During on-site construction, it is only necessary to connect the foundation pit protective fence pad to the column.

基坑临边护栏是根据施工图纸定制而成，严格按图施工，要求在出厂前进行串联组装。产品在运施工现场后只需将各立柱的钢衬插入稳定的基座中，根据使用部门的要求扩展布局。基础打好完成后将使用特殊的螺栓将每个基坑护栏适当的连接起来。为了提高抗风性和恶意移动，稳定的底座应固定在地面上，膨胀螺栓部分应在地面内。

The edge guardrail of the foundation pit is customized according to the construction drawings and constructed strictly according to the drawings. It is required to be assembled in series before leaving the factory. After the product is transported to the construction site, simply insert the steel lining of each column into a stable base and expand the layout according to the requirements of the user department. After the foundation is laid, special bolts will be used to properly connect each foundation pit guardrail. In order to improve wind resistance and malicious movement, a stable base should be fixed on the ground, and the expansion bolt part should be inside the ground.

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