Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Continuous small box girder structure with combined section in hogging moment area and construction method thereof
The invention discloses a continuous small box girder structure adopting a combined section in a hogging moment area and a construction method thereof. The continuous small box girder structure comprises a prefabricated NC small box girder, a middle fulcrum connecting section and a prefabricated UHPC groove-shaped plate. The prefabricated UHPC groove-shaped plate is located in a negative bending moment area of the continuous beam, an empty groove is formed in the groove-shaped plate, and a concave connecting piece and a convex connecting piece are arranged at a web plate. According to the method, the cracking bending moment and durability of concrete in the hogging moment area are remarkably improved, the problem of shrinkage cracking of cast-in-place UHPC in the hogging moment area is solved, the method can adapt to the situation that the thicknesses of the NC plate and the UHPC plate are inconsistent, formwork erection during pouring of joints between UHPC webs is omitted, the method can adapt to prefabricated small box girders of various lengths, and industrial production is facilitated.
本发明公开一种负弯矩区采用组合断面的连续小箱梁结构及其施工方法，包括预制NC小箱梁、中支点连接段、预制UHPC槽形板；预制UHPC槽形板位于连续梁负弯矩区，槽形板中设有空槽，腹板处设有凹、凸连接件。本发明显著提升了负弯矩区混凝土的开裂弯矩和耐久性，避免了负弯矩区现浇UHPC的收缩开裂问题，可以适应NC板与UHPC板厚度不一致的情景，免除了UHPC腹板间接缝浇筑时的模板架设，可以适应各种长度的预制小箱梁，便于工业化生产。
Continuous small box girder structure with combined section in hogging moment area and construction method thereof
The invention discloses a continuous small box girder structure adopting a combined section in a hogging moment area and a construction method thereof. The continuous small box girder structure comprises a prefabricated NC small box girder, a middle fulcrum connecting section and a prefabricated UHPC groove-shaped plate. The prefabricated UHPC groove-shaped plate is located in a negative bending moment area of the continuous beam, an empty groove is formed in the groove-shaped plate, and a concave connecting piece and a convex connecting piece are arranged at a web plate. According to the method, the cracking bending moment and durability of concrete in the hogging moment area are remarkably improved, the problem of shrinkage cracking of cast-in-place UHPC in the hogging moment area is solved, the method can adapt to the situation that the thicknesses of the NC plate and the UHPC plate are inconsistent, formwork erection during pouring of joints between UHPC webs is omitted, the method can adapt to prefabricated small box girders of various lengths, and industrial production is facilitated.
本发明公开一种负弯矩区采用组合断面的连续小箱梁结构及其施工方法，包括预制NC小箱梁、中支点连接段、预制UHPC槽形板；预制UHPC槽形板位于连续梁负弯矩区，槽形板中设有空槽，腹板处设有凹、凸连接件。本发明显著提升了负弯矩区混凝土的开裂弯矩和耐久性，避免了负弯矩区现浇UHPC的收缩开裂问题，可以适应NC板与UHPC板厚度不一致的情景，免除了UHPC腹板间接缝浇筑时的模板架设，可以适应各种长度的预制小箱梁，便于工业化生产。
Continuous small box girder structure with combined section in hogging moment area and construction method thereof
负弯矩区采用组合断面的连续小箱梁结构及其施工方法
TONG ZHAOJIE (Autor:in) / JIANG RUIJUAN (Autor:in) / WU QIMING (Autor:in) / XIAO YUFENG (Autor:in) / XU TIANHUA (Autor:in) / TIAN QIANGCHUN (Autor:in) / ZHU ZHUNFENG (Autor:in) / MO ZENGMO (Autor:in) / CHEN JIE (Autor:in)
04.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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