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A platform for research: civil engineering, architecture and urbanism
Large-cantilever semi-fabricated prestressed concrete cover beam and construction process thereof
The invention discloses a large-cantilever semi-assembly type prestressed concrete cover beam and a construction technology thereof, the cover beam comprises a UHPC shell, a support, a pier column and a reinforcement cage, the UHPC shell is arranged at the top of the pier column through the support, the UHPC shell and the support are of an integrated structure, a plurality of embedded sleeves are vertically arranged on the support, a plurality of embedded steel bars are vertically arranged at the top of the pier column, and the UHPC shell and the support are of an integrated structure. The embedded steel bar penetrates through the embedded sleeve and extends into the UHPC shell; the reinforcement cage is fixedly arranged in the UHPC shell; common concrete is poured in the UHPC shell; prestressed tendons/cables are also arranged in the UHPC shell; vertical ribs and horizontal ribs are arranged on the inner surface of the UHPC shell; channel steel is arranged at the tops of the vertical ribs; steel plate braces are arranged between the steel channels. The construction technology comprises the steps that the prefabricated UHPC shell is hoisted to the top of the pier column; hoisting the reinforcement cage into the UHPC shell and fixing the reinforcement cage; arranging prestressed tendons/cables; mounting channel steel; common concrete is poured; and after the common concrete reaches the design strength, the prestressed tendons/cables are tensioned and then fixed to the UHPC shell.
一种大悬挑半装配式预应力混凝土盖梁及其施工工艺，盖梁包括UHPC外壳、支座、墩柱及钢筋骨架，UHPC外壳通过支座设在墩柱顶部，UHPC外壳与支座为一体式结构，支座上竖直设有若干预埋套管，墩柱顶部竖直设有若干预埋钢筋，预埋钢筋穿过预埋套管延伸至UHPC外壳内部；钢筋骨架固定设在UHPC外壳内部；UHPC外壳内部浇筑有普通混凝土；UHPC外壳内部还设有预应力筋/索；UHPC外壳内表面设有竖直肋条和水平肋条；竖直肋条顶部设有槽钢；槽钢之间设有钢板拉条。施工工艺为：将预制好的UHPC外壳吊装到墩柱顶部；将钢筋骨架吊装到UHPC外壳内部并固定；布设预应力筋/索；安装槽钢；浇筑普通混凝土；待普通混凝土达到设计强度后，张拉预应力筋/索后将预应力筋/索固定到UHPC外壳上。
Large-cantilever semi-fabricated prestressed concrete cover beam and construction process thereof
The invention discloses a large-cantilever semi-assembly type prestressed concrete cover beam and a construction technology thereof, the cover beam comprises a UHPC shell, a support, a pier column and a reinforcement cage, the UHPC shell is arranged at the top of the pier column through the support, the UHPC shell and the support are of an integrated structure, a plurality of embedded sleeves are vertically arranged on the support, a plurality of embedded steel bars are vertically arranged at the top of the pier column, and the UHPC shell and the support are of an integrated structure. The embedded steel bar penetrates through the embedded sleeve and extends into the UHPC shell; the reinforcement cage is fixedly arranged in the UHPC shell; common concrete is poured in the UHPC shell; prestressed tendons/cables are also arranged in the UHPC shell; vertical ribs and horizontal ribs are arranged on the inner surface of the UHPC shell; channel steel is arranged at the tops of the vertical ribs; steel plate braces are arranged between the steel channels. The construction technology comprises the steps that the prefabricated UHPC shell is hoisted to the top of the pier column; hoisting the reinforcement cage into the UHPC shell and fixing the reinforcement cage; arranging prestressed tendons/cables; mounting channel steel; common concrete is poured; and after the common concrete reaches the design strength, the prestressed tendons/cables are tensioned and then fixed to the UHPC shell.
一种大悬挑半装配式预应力混凝土盖梁及其施工工艺，盖梁包括UHPC外壳、支座、墩柱及钢筋骨架，UHPC外壳通过支座设在墩柱顶部，UHPC外壳与支座为一体式结构，支座上竖直设有若干预埋套管，墩柱顶部竖直设有若干预埋钢筋，预埋钢筋穿过预埋套管延伸至UHPC外壳内部；钢筋骨架固定设在UHPC外壳内部；UHPC外壳内部浇筑有普通混凝土；UHPC外壳内部还设有预应力筋/索；UHPC外壳内表面设有竖直肋条和水平肋条；竖直肋条顶部设有槽钢；槽钢之间设有钢板拉条。施工工艺为：将预制好的UHPC外壳吊装到墩柱顶部；将钢筋骨架吊装到UHPC外壳内部并固定；布设预应力筋/索；安装槽钢；浇筑普通混凝土；待普通混凝土达到设计强度后，张拉预应力筋/索后将预应力筋/索固定到UHPC外壳上。
Large-cantilever semi-fabricated prestressed concrete cover beam and construction process thereof
一种大悬挑半装配式预应力混凝土盖梁及其施工工艺
LIU CIJUN (author) / CHEN TAO (author) / ZHANG GUANHUA (author) / WANG LIANGUANG (author) / WANG JIAWEI (author) / GUO JIANFEI (author) / QIAN CHENG (author) / WANG KAI (author) / GUO DONGSHENG (author) / HAN JIGANG (author)
2022-06-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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