鋼筋工程量計(jì)算規(guī)則
(一)鋼筋工程量計(jì)算規(guī)則? 1、鋼筋工程,應(yīng)區(qū)別現(xiàn)澆、預(yù)制構(gòu)件、不同鋼種和規(guī)格,分別按設(shè)計(jì)長(zhǎng)度乘以單位重量,以噸計(jì)算。2、計(jì)算鋼筋工程量時(shí),設(shè)計(jì)已規(guī)定鋼筋塔接長(zhǎng)度的,按規(guī)定塔接長(zhǎng)度計(jì)算;設(shè)計(jì)未規(guī)定塔接長(zhǎng)度的,已包括在鋼筋的損耗率之內(nèi),不另計(jì)算塔接長(zhǎng)度。鋼筋電渣壓力焊接、套筒擠壓等接頭,以個(gè)計(jì)算。3、先張法預(yù)應(yīng)力鋼筋,按構(gòu)件外形尺寸計(jì)算長(zhǎng)度,后張法預(yù)應(yīng)力鋼筋按設(shè)計(jì)圖規(guī)定的預(yù)應(yīng)力鋼筋預(yù)留孔道長(zhǎng)度,并區(qū)別不同的錨具類型,分別按下列規(guī)定計(jì)算:(1)低合金鋼筋兩端采用螺桿錨具時(shí),預(yù)應(yīng)力的鋼筋按預(yù)留孔道長(zhǎng)度減0.35m,螺桿另行計(jì)算。?(2)低合金鋼筋一端采用徽頭插片,另一端螺桿錨具時(shí),預(yù)應(yīng)力鋼筋長(zhǎng)度按預(yù)留孔道長(zhǎng)度計(jì)算,螺桿另行計(jì)算。(3)低合金鋼筋一端采用徽頭插片,另一端采用幫條錨具時(shí),預(yù)應(yīng)力鋼筋增加0.?15m,兩端采用幫條錨具時(shí)預(yù)應(yīng)力鋼筋共增加0.3m計(jì)算。(4)低合金鋼筋采用后張硅自錨時(shí),預(yù)應(yīng)力鋼筋長(zhǎng)度增加0.?35m計(jì)算。(5)低合金鋼筋或鋼絞線采用JM,?XM,?QM型錨具孔道長(zhǎng)度在20m以內(nèi)時(shí),預(yù)應(yīng)力鋼筋長(zhǎng)度增加lm;孔道長(zhǎng)度20m以上時(shí)預(yù)應(yīng)力鋼筋長(zhǎng)度增加1.8m計(jì)算。(6)碳素鋼絲采用錐形錨具,孔道長(zhǎng)在20m以內(nèi)時(shí),預(yù)應(yīng)力鋼筋長(zhǎng)度增加lm;孔道長(zhǎng)在20m以上時(shí),預(yù)應(yīng)力鋼筋長(zhǎng)度增加1.8m.(7)碳素鋼絲兩端采用鐓粗頭時(shí),預(yù)應(yīng)力鋼絲長(zhǎng)度增加0.?35m計(jì)算。?...閱讀全文