預(yù)應(yīng)力混凝土用鋼絞線

2020/04/29 分類:產(chǎn)品中心鋼絞線 3095 0

預(yù)應(yīng)力混凝土用鋼絞線主要作預(yù)應(yīng)力混凝土結(jié)構(gòu)配筋用，如大跨度鐵路和公路的橋梁、吊車梁、巖土錨固工程、多層工業(yè)廠房等。

鋼絞線類別

有粘結(jié)預(yù)應(yīng)力鋼絞線：采用高碳鋼盤條，經(jīng)過表面處理后冷拔成鋼絲，然后將一定數(shù)量的鋼絲絞合成股，再經(jīng)過消除應(yīng)力的穩(wěn)定化處理過程而成。為延長耐久性，鋼絲上可以有金屬或非金屬鍍層或涂層，如鍍鋅、涂環(huán)氫樹脂等。為增加與混凝土的握裹力，表面可以有刻痕。

無粘結(jié)預(yù)應(yīng)力鋼絞線：采用普通預(yù)應(yīng)力鋼絞線，涂防腐油脂或石蠟后包高密度聚乙烯(HDPE)制作而成。工藝流程：煉鐵→煉鋼方坯連鑄→高線→酸洗→拉拔→捻股→穩(wěn)定化處理→調(diào)整張力→打軸→裸線→成品。從原材料檢測、生產(chǎn)設(shè)備、拉拔模具、化學(xué)清洗到拉拔、熱處理、包裝等各個(gè)環(huán)節(jié)均要求有效控制和嚴(yán)格檢測，并有一套完整的原始記錄，詳細(xì)統(tǒng)計(jì)記載該產(chǎn)品在各生產(chǎn)環(huán)節(jié)的進(jìn)展情況和質(zhì)量情況。

低松弛預(yù)應(yīng)力混凝土鋼絞線技術(shù)參數(shù)表

公稱直徑mm	直徑偏差mm	公稱面積mm2	公稱重量Kg/1000m	強(qiáng)度級別KN	最小破斷負(fù)荷KN	最小屈服負(fù)荷KN	最小伸長率L≥500mm	松弛
Φ9.50	+0.30 -0.15	54.8	430	1720 1860 1960	94.3 102 107	84.9 91.8 96.3	3.5%	60% 70% 80%	1.0% 2.5% 4.5%
Φ11.10	+0.30 -0.15	74.2	582	1720 1860 1960	128 138 145	115 124 131
Φ12.7	+0.40 -0.20	98.7	775	1720 1860 1960	170 184 193	153 166 174
Φ15.20		140	1101	1470 1570 1670 1720 1860 1960	206 220 234 241 260 274	185 198 211 217 234 247
Φ15.70		150	1178	1770 1860	266 279	239 251
Φ17.80		191	1500	1720 1860	327 353	294 251
Φ21.6		285	2237	1770 1860	504 530	454 477

無粘結(jié)預(yù)應(yīng)力鋼絞線

此產(chǎn)品適用于大跨度、大開間建筑的現(xiàn)澆樓板，大載荷的預(yù)制梁及其他特制結(jié)構(gòu)。具有不需預(yù)留孔道、不必灌漿、施工簡便、節(jié)省材料、隨便彎曲等特征。

規(guī)格及技術(shù)表（JG161）

規(guī)格	強(qiáng)度級別	截面積	每米油脂重量	護(hù)套厚度	線壁摩擦系數(shù)	影響系數(shù)	理論重量
1*7-Φ12.70	1720 1860 1960	98.7	43	1.0	0.04-0.1	0.003-0.004	0.875
1*7-Φ15.20	1570 1670 1770 1860 1960	140.0	50				1.21
1*7-Φ15.24	1860	140.0	50				1.21
1*7-Φ15.70	1860	150.0	53				1.30

標(biāo)簽:鋼絞線上一篇: 錨具體系

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