鋼塑土工格(ge)柵:
是(shi)(shi)一(yi)(yi)種(zhong)(zhong)能(neng)夠鋪設(she)在(zai)瀝青混(hun)凝土(tu)路(lu)面的(de)材(cai)料(liao)(liao),與(yu)傳統格柵(zha)相比(bi)更(geng)具有強度大、承(cheng)載(zai)(zai)力(li)強、、防老化、摩擦系數大、孔眼均勻、施工方便、使用壽(shou)命長等特點,能(neng)有效的(de)避免在(zai)施工過程中(zhong)(zhong)被機具碾壓(ya)、破壞而造(zao)成的(de)施工損傷。鋼塑(su)土(tu)工格柵(zha)是(shi)(shi)一(yi)(yi)種(zhong)(zhong)在(zai)建筑(zhu)施工中(zhong)(zhong)用量(liang)非常大的(de)材(cai)料(liao)(liao),鋼塑(su)土(tu)工格柵(zha)是(shi)(shi)網狀結構,瀝青混(hun)凝土(tu)中(zhong)(zhong)的(de)集料(liao)(liao)可以(yi)貫穿其中(zhong)(zhong),這樣就形成了(le)機械嵌(qian)鎖。這種(zhong)(zhong)限(xian)制阻礙了(le)集料(liao)(liao)的(de)運動,使瀝青混(hun)合料(liao)(liao)在(zai)受(shou)荷載(zai)(zai)的(de)情況下能(neng)夠達(da)到更(geng)好的(de)壓(ya)實狀態,更(geng)高(gao)的(de)承(cheng)重能(neng)力(li),更(geng)好的(de)荷載(zai)(zai)傳遞性(xing)能(neng)及較小的(de)變形。
鋼塑(su)土工(gong)格柵產品的關鍵技術(shu):
1.土(tu)工格柵加固技術
與(yu)鋼(gang)相比(bi),土工(gong)(gong)(gong)格(ge)柵(zha)(zha)具有耐腐蝕(shi)和耐化(hua)學(xue)腐蝕(shi)的(de)優(you)點,但易(yi)受(shou)紫(zi)外線輻射、老化(hua)或溫(wen)度(du)限制(-50~80℃)。因此,有必要在土工(gong)(gong)(gong)格(ge)柵(zha)(zha)制造材料中加入適(shi)當的(de)炭黑,以提高(gao)其(qi)耐候性,并有必要在工(gong)(gong)(gong)程應用中采取填料或植物等表(biao)面保(bao)護(hu)措施,以提高(gao)土工(gong)(gong)(gong)格(ge)柵(zha)(zha)的(de)抗(kang)老化(hua)性能。
2.土工格柵(zha)張拉(la)技術
土工(gong)格柵(zha)拉伸(shen)技術將高密度聚乙烯(xi)或(huo)聚丙烯(xi)與改性劑和添加劑混合。采用擠出機擠出壓延工(gong)藝生(sheng)產出厚度控制精(jing)度高、表面(mian)光滑的優質板材。聚合物分子鏈經(jing)沖床精(jing)密沖切、預熱裝置緩慢拉伸(shen)后(hou),沿拉伸(shen)方(fang)向(xiang)(xiang)高度定向(xiang)(xiang)。
3.土工格柵蠕(ru)變技術(shu)
在土工格柵的使用過程中,土工格柵的長期徐變是由于穩定張力的長期效應造成的,這導致土工格柵不能有效發揮其應有的加固、拉伸等作用。土工格柵蠕變技術的研究對工程具有重要意義。
鋼(gang)(gang)塑(su)土工(gong)(gong)(gong)格(ge)柵的(de)(de)拉力由(you)編織的(de)(de)高強鋼(gang)(gang)絲承擔,在低應變能(neng)力下(xia)產生(sheng)極(ji)高的(de)(de)抗拉模量(liang),縱橫向肋條協同作用(yong),充(chong)分發揮格(ge)柵對(dui)土體的(de)(de)嵌鎖作用(yong)。鋼(gang)(gang)塑(su)土工(gong)(gong)(gong)格(ge)柵的(de)(de)縱橫向,外包裹層一次成型,鋼(gang)(gang)絲與外包裹層能(neng)協調作。破壞伸長率很(hen)低,鋼(gang)(gang)塑(su)復合土工(gong)(gong)(gong)格(ge)柵的(de)(de)主(zhu)要受力單(dan)元為鋼(gang)(gang)絲,蠕變量(liang)極(ji)低。在公路(lu)建設中,軟(ruan)土地基(ji)加固處理(li)的(de)(de)方法(fa)有(you)多種,采用(yong)哪種方法(fa)要根據當(dang)地的(de)(de)實(shi)際(ji)情況(kuang)綜合考慮(lv)。不管(guan)選用(yong)哪種方法(fa),其處理(li)方式正確與否(fou),直接與工(gong)(gong)(gong)程質(zhi)量(liang)和工(gong)(gong)(gong)程造(zao)(zao)價(jia)有(you)著緊密聯系(xi),因軟(ruan)基(ji)處理(li)不當(dang)造(zao)(zao)成的(de)(de)工(gong)(gong)(gong)程質(zhi)量(liang)事故在公路(lu)建設中時(shi)有(you)發生(sheng)。實(shi)踐證明,使用(yong)土工(gong)(gong)(gong)格(ge)柵結合塑(su)料排水板(ban)綜對(dui)軟(ruan)土地基(ji)加固處理(li)的(de)(de)方法(fa)是切實(shi)可行的(de)(de),而且質(zhi)量(liang)可靠、施工(gong)(gong)(gong)方便(bian)、工(gong)(gong)(gong)程造(zao)(zao)價(jia)相對(dui)較低,但(dan)由(you)于塑(su)料排水板(ban)的(de)(de)插設間距(ju)和深度與軟(ruan)土的(de)(de)固結速率有(you)。
億路通新材料(朝陽市分公司)借助先進的加工設備與先進的技術,專業、的管理團隊,堅持發揮團隊粗神,合作共贏的理念,結合自產自銷 復合土工膜的經營戰略,讓我們給客戶提供的是價廉物美的 復合土工膜(mo)產(chan)品(pin)與服(fu)務! 歡(huan)迎廣大新老客(ke)戶光臨惠顧,我們將竭(jie)誠為您服(fu)務!
鋼塑土(tu)工格柵(zha)的定義:
用聚(ju)(ju)丙烯、聚(ju)(ju)氯乙烯等(deng)高分子聚(ju)(ju)合物經(jing)熱塑或(huo)模壓(ya)而成(cheng)的二維網(wang)格(ge)狀或(huo)具有一定高度的三維平面(mian)網(wang)格(ge)屏柵,當作(zuo)為土木(mu)工(gong)程(cheng)運用時,稱為鋼塑格(ge)柵
無長期(qi)蠕(ru)變——作為加強資料,具備在長期(qi)荷載的(de)狀況下(xia)抵擋變形的(de)才干即(ji)抗(kang)蠕(ru)變性是極為重要(yao)的(de),玻璃纖維不會發作蠕(ru)變,這保證產品可以長期(qi)堅持機能
土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)一般(ban)軟(ruan)基(ji)處(chu)理填(tian)高大(da)于(yu)(yu)(yu)(yu)4米(mi)時(shi)(shi)(shi)(shi)采(cai)(cai)用。軟(ruan)基(ji)處(chu)理時(shi)(shi)(shi)(shi)當路(lu)(lu)基(ji)填(tian)高在(zai)3-4米(mi)之(zhi)間或路(lu)(lu)橋(qiao)結(jie)合(he)(he)部、防止不(bu)均勻(yun)沉降時(shi)(shi)(shi)(shi)采(cai)(cai)用。舊路(lu)(lu)加(jia)(jia)寬防止縱(zong)(zong)向(xiang)(xiang)裂縫在(zai)新(xin)舊路(lu)(lu)基(ji)結(jie)合(he)(he)部加(jia)(jia)鋪。低填(tian)淺挖(wa)段、填(tian)土(tu)(tu)在(zai)2米(mi)以內的軟(ruan)基(ji)處(chu)理、不(bu)良段的路(lu)(lu)基(ji)加(jia)(jia).加(jia)(jia)固路(lu)(lu)基(ji),防止斷裂當填(tian)土(tu)(tu)高度大(da)于(yu)(yu)(yu)(yu)4m時(shi)(shi)(shi)(shi),土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)滿足行業(ye)標準的要求即可,縱(zong)(zong)橫(heng)向(xiang)(xiang)極(ji)限拉(la)力應不(bu)小(xiao)(xiao)(xiao)(xiao)于(yu)(yu)(yu)(yu)20kN/m當填(tian)土(tu)(tu)高度在(zai)3-4m之(zhi)間時(shi)(shi)(shi)(shi),土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)縱(zong)(zong)橫(heng)向(xiang)(xiang)極(ji)限拉(la)力不(bu)小(xiao)(xiao)(xiao)(xiao)于(yu)(yu)(yu)(yu)40kN/m當填(tian)土(tu)(tu)高度小(xiao)(xiao)(xiao)(xiao)于(yu)(yu)(yu)(yu)3m時(shi)(shi)(shi)(shi),土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)縱(zong)(zong)橫(heng)向(xiang)(xiang)極(ji)限拉(la)力不(bu)小(xiao)(xiao)(xiao)(xiao)于(yu)(yu)(yu)(yu)50 kN/m,伸長(chang)率(lv)小(xiao)(xiao)(xiao)(xiao)于(yu)(yu)(yu)(yu)4%,建議采(cai)(cai)用GSZ60-60型土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)當土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)用于(yu)(yu)(yu)(yu)路(lu)(lu)基(ji)填(tian)挖(wa)結(jie)合(he)(he)部時(shi)(shi)(shi)(shi)應采(cai)(cai)用雙向(xiang)(xiang)不(bu)低于(yu)(yu)(yu)(yu)40kN/m的土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha),宜采(cai)(cai)用GSZ60-60型土(tu)(tu)工(gong)(gong)(gong)(gong)格(ge)(ge)柵(zha)。