①大跨徑或多跨拱橋②不便搭設(shè)支架③搭設(shè)支架不經(jīng)濟(jì)
①連續(xù)澆砌筑法(適用于小跨徑l≤16m)②分段澆砌筑法(適用于中等跨徑16m
①分環(huán)分段,對(duì)稱均衡②先下后上,作業(yè)平穩(wěn)③控時(shí)控溫,以利封頂④加載程序,切實(shí)執(zhí)行