土工布铺设规范大公开，看完秒懂市政工程硬核操作

土工(gong)布(bu)铺设(she)是现(xian)代(dai)市政道路施(shi)工(gong)中重(zhong)要的(de)一(yi)环， 其目的(de)是充分发挥(hui)土工(gong)布(bu)的(de)隔离和排(pai)水(shui)等(deng)功(gong)能，提升路基的(de)综合性(xing)能。具体施(shi)工(gong)流程如下：首先，根据设(she)计要求，选(xuan)用适宜的(de)土工(gong)布(bu)材料，选(xuan)材时应重(zhong)点考虑抗(kang)拉强度、刚度模(mo)量、孔隙率等(deng)指标。

土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)铺(pu)设(she)(she)(she)(she)(she)前，应(ying)(ying)(ying)(ying)对其(qi)(qi)进(jin)行(xing)(xing)抽样检(jian)测(ce)，确保(bao)各(ge)项性(xing)能(neng)指标(biao)符合(he)设(she)(she)(she)(she)(she)计标(biao)准。铺(pu)设(she)(she)(she)(she)(she)时(shi)(shi)，先在平整(zheng)压(ya)(ya)实(shi)的(de)(de)(de)基底(di)(di)上铺(pu)设(she)(she)(she)(she)(she)一层(ceng)砂垫层(ceng)，厚度(du)通常(chang)为5~10cm，再将土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)平铺(pu)其(qi)(qi)上，铺(pu)设(she)(she)(she)(she)(she)方(fang)向(xiang)应(ying)(ying)(ying)(ying)与路(lu)基走向(xiang)一致。相邻(lin)两幅(fu)土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)应(ying)(ying)(ying)(ying)搭(da)接10~20cm，搭(da)接部位采用(yong)缝纫(ren)、热熔焊(han)接等(deng)方(fang)式连接，接缝拉伸强(qiang)度(du)不应(ying)(ying)(ying)(ying)低于土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)本体强(qiang)度(du)的(de)(de)(de)80%。铺(pu)设(she)(she)(she)(she)(she)过程中(zhong)，注意保(bao)持土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)的(de)(de)(de)平整(zheng)度(du)，避(bi)免(mian)出现(xian)皱褶、空鼓等(deng)缺(que)陷。在道路(lu)转角、坡(po)道等(deng)特殊部位，应(ying)(ying)(ying)(ying)对土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)进(jin)行(xing)(xing)裁(cai)剪，使其(qi)(qi)与基底(di)(di)完全贴合(he)。土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)铺(pu)设(she)(she)(she)(she)(she)完毕后(hou)，立即采取压(ya)(ya)重(zhong)措施，防止其(qi)(qi)发(fa)生位移或被风吹(chui)起。压(ya)(ya)重(zhong)材(cai)料(liao)通常(chang)选用(yong)中(zhong)粗砂或细(xi)砾石，铺(pu)设(she)(she)(she)(she)(she)厚度(du)一般为15~30cm，压(ya)(ya)实(shi)度(du)应(ying)(ying)(ying)(ying)达(da)到 95%以(yi)上。需要指出的(de)(de)(de)是，土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)铺(pu)设(she)(she)(she)(she)(she)时(shi)(shi)应(ying)(ying)(ying)(ying)严格控制机械设(she)(she)(she)(she)(she)备的(de)(de)(de)运(yun)行(xing)(xing)速度(du)和运(yun)距，避(bi)免(mian)对土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)造成(cheng)损伤(shang)，发(fa)现(xian)破损应(ying)(ying)(ying)(ying)及时(shi)(shi)修补或更换，确保(bao)土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)的(de)(de)(de)完整(zheng)性(xing)。同(tong)时(shi)(shi)，土(tu)(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)(bu)铺(pu)设(she)(she)(she)(she)(she)完成(cheng)后(hou)，保(bao)持其(qi)(qi)表面清洁，及时(shi)(shi)清理施工(gong)(gong)(gong)(gong)垃圾，为后(hou)续施工(gong)(gong)(gong)(gong)提供良好条件。