摘要
正反锚具法是在基坑外侧,通过采用两个锚具反向放置锁定的方式,将锚杆的钢绞线连接起来的一种新型方法。将锚杆的钢绞线通过正反锚具连接,并在正反锚具上施加一定的预应力进行锁定,即成为正反锚具法预应力锚杆。正反锚具法预应力锚杆可有效限制基坑位移的增加。结合工程实例,阐述了该方法在某桩锚支护结构位移控制中的应用效果。结果表明,该法能够经济、可靠地控制基坑位移,在基坑预警和预防基坑事故中具有推广和使用价值。
The opposite anchorages method is to use opposite placement of two anchorages join up steel strand of anchors and adding stated prestressed force on opposite anchorages and locked. The prestressed anchor can restrict the increase of foundation pit displace-ment effectively. Combined with project cases, have expounded application effects of the method on a pile anchor supporting structure displacement controlling. The results have shown that the method can control foundation pit displacement economically and reliably, have popularization value in foundation pit accidents early warning and prevention.
出处
《中国煤炭地质》
2015年第5期50-53,57,共5页
Coal Geology of China
关键词
正反锚具法
预应力锚杆
桩锚支护
位移控制
opposite anchorages method
prestressed anchor
pile anchor supporting
displacement controlling
