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武汉桥梁挤压锚

武汉桥梁挤压锚

详细介绍

安装方法(fa)

简单(dan)施工法(fa)

简(jian)(jian)单(dan)施工(gong)(gong)(gong)法(fa)又称(cheng)预应力锚具(ju)施工(gong)(gong)(gong)安装(zhuang)法(fa),属于小锚具(ju)施工(gong)(gong)(gong)安装(zhuang),是在(zai)被锚具(ju)施工(gong)(gong)(gong)安装(zhuang)的(de)岩石内钻(zuan)(zuan)凿直径28—75 mm、深度1~Sm筒形的(de)简(jian)(jian)单(dan)施工(gong)(gong)(gong)、简(jian)(jian)单(dan)施工(gong)(gong)(gong)可用(yong)风钻(zuan)(zuan)或人工(gong)(gong)(gong)打(da)设,然后在(zai)简(jian)(jian)单(dan)施工(gong)(gong)(gong)内装(zhuang)药进(jin)行(xing)爆炸,简(jian)(jian)单(dan)施工(gong)(gong)(gong)法(fa)可用(yong)于开挖基坑、开采石料(liao)、松动冻土等,但其锚具(ju)施工(gong)(gong)(gong)安装(zhuang)量(liang)小、效率低、钻(zuan)(zuan)孔工(gong)(gong)(gong)作量(liang)大。

简(jian)(jian)单(dan)施工的布(bu)置应尽(jin)(jin)量(liang)利用临(lin)空面(mian)较多的地(di)形(xing);简(jian)(jian)单(dan)施工方(fang)向应尽(jin)(jin)量(liang)与(yu)临(lin)空面(mian)平行(xing)。避免与(yu)临(lin)空面(mian)垂直,以免炸药(yao)爆炸时,破(po)坏力向较小(xiao)抵抗线方(fang)向发展。药(yao)包量(liang)可按松动(dong)药(yao)包量(liang)计算(suan)。为防止出(chu)现(xian)冲天炮(pao),装药(yao)量(liang)大致为炮(pao)孔深(shen)度。

一般(ban)锚具(ju)施工安装法

一般锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)法(fa)是(shi)在(zai)炮(pao)(pao)孔底部(bu)放入(ru)少量的炸药,经过几次锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)扩大(da)成(cheng)为圆(yuan)球的形状,最后装(zhuang)(zhuang)(zhuang)(zhuang)人炸药进行锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)。此(ci)法(fa)与(yu)炮(pao)(pao)孔锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)法(fa)相比,具(ju)(ju)有锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)效果(guo)好、工(gong)效高、进度快、炸药消耗少等(deng)优(you)点。在(zai)浅基的短桩锚具(ju)(ju)施(shi)工(gong)安装(zhuang)(zhuang)(zhuang)(zhuang)中常采用(yong)此(ci)法(fa)。

复杂锚具施工(gong)安装

复杂锚(mao)具施(shi)工(gong)(gong)安装也叫“定向(xiang)锚(mao)具施(shi)工(gong)(gong)安装”,是通(tong)过相(xiang)应的技(ji)术措(cuo)施(shi),严格控(kong)制爆炸(zha)能量和爆炸(zha)规模,使锚(mao)具施(shi)工(gong)(gong)安装的声响、振动、破坏区(qu)域以(yi)及破碎物(wu)的散坍(tan)范围,控(kong)制在(zai)规定的限度之内。在(zai)城市和工(gong)(gong)厂往(wang)往(wang)需要(yao)复杂一些(xie)旧的桥梁建筑物(wu)或构(gou)筑物(wu),如(ru):楼宇(yu)、厂房、烟囱、水塔以(yi)及各种基础等,常采用复杂锚(mao)具施(shi)工(gong)(gong)安装。

复(fu)杂锚(mao)具施(shi)工安(an)装(zhuang)(zhuang)考(kao)虑的因素很多,包括锚(mao)具施(shi)工安(an)装(zhuang)(zhuang)体(ti)的几何形(xing)状和材质,使用(yong)的炸药、药量、简单施(shi)工布置及(ji)装(zhuang)(zhuang)药方式,覆盖物(wu)和防(fang)护(hu)措(cuo)施(shi)及(ji)周围环境等,其中主要(yao)的是(shi)炸药及(ji)装(zhuang)(zhuang)药量。


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