裝配式(shi)公路鋼橋(qiao)(qiao)由(you)桁架(jia)式(shi)主(zhu)(zhu)梁(liang)(liang)(liang)(liang)(liang)、橋(qiao)(qiao)面(mian)系、聯接(jie)(jie)系、構礎(chu)四(si)部分組(zu)(zu)成，并配有(you)(you)專(zhuan)用(yong)(yong)(yong)吊具。在(zai)車行(xing)道兩(liang)(liang)(liang)側(ce)，由(you)每節長3米的桁架(jia)用(yong)(yong)(yong)銷子連接(jie)(jie)主(zhu)(zhu)梁(liang)(liang)(liang)(liang)(liang)，主(zhu)(zhu)梁(liang)(liang)(liang)(liang)(liang)之(zhi)間(jian)(jian)(jian)用(yong)(yong)(yong)橫(heng)梁(liang)(liang)(liang)(liang)(liang)連接(jie)(jie)，每格(ge)(ge)桁架(jia)設兩(liang)(liang)(liang)根(gen)橫(heng)梁(liang)(liang)(liang)(liang)(liang)，每格(ge)(ge)桁架(jia)設4組(zu)(zu)縱(zong)梁(liang)(liang)(liang)(liang)(liang)，中間(jian)(jian)(jian)兩(liang)(liang)(liang)組(zu)(zu)無扣(kou)(kou)縱(zong)梁(liang)(liang)(liang)(liang)(liang)，外側(ce)兩(liang)(liang)(liang)組(zu)(zu)有(you)(you)扣(kou)(kou)縱(zong)梁(liang)(liang)(liang)(liang)(liang)，在(zai)縱(zong)梁(liang)(liang)(liang)(liang)(liang)上鋪(pu)設木質橋(qiao)(qiao)板(ban)，橋(qiao)(qiao)板(ban)兩(liang)(liang)(liang)側(ce)用(yong)(yong)(yong)緣材(cai)固(gu)定，橋(qiao)(qiao)兩(liang)(liang)(liang)端(duan)(duan)設有(you)(you)端(duan)(duan)柱。可以把U型(xing)橋(qiao)(qiao)板(ban)直接(jie)(jie)鋪(pu)在(zai)梁(liang)(liang)(liang)(liang)(liang)上。主(zhu)(zhu)梁(liang)(liang)(liang)(liang)(liang)經端(duan)(duan)柱支撐在(zai)橋(qiao)(qiao)座(座)和座板(ban)上，橋(qiao)(qiao)與(yu)出水處之(zhi)間(jian)(jian)(jian)由(you)橋(qiao)(qiao)頭(tou)搭板(ban)連接(jie)(jie)，中間(jian)(jian)(jian)為(wei)無扣(kou)(kou)搭板(ban)，兩(liang)(liang)(liang)側(ce)為(wei)有(you)(you)扣(kou)(kou)搭板(ban)﹐搭板(ban)上鋪(pu)設橋(qiao)(qiao)板(ban)，固(gu)定緣材(cai)。整個橋(qiao)(qiao)梁(liang)(liang)(liang)(liang)(liang)具有(you)(you)斜撐、抗(kang)風拉桿(gan)、支承架(jia)、聯板(ban)等(deng)多(duo)種連接(jie)(jie)系構件(jian)，使橋(qiao)(qiao)梁(liang)(liang)(liang)(liang)(liang)形成穩定的空(kong)間(jian)(jian)(jian)結(jie)構。