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A platform for research: civil engineering, architecture and urbanism
UHPC box girder bridge joint structure and construction technology thereof
The invention relates to the technical field of box girder construction, and particularly discloses a UHPC box girder bridge joint structure which comprises at least four wire feeders, at least three fixed pulleys and at least four wire clamping seats, the wire feeders and the fixed pulleys are fixedly installed on the inner wall of one end of a box girder hole and are arranged in a staggered mode, and the wire clamping seats are fixedly installed on the inner wall of the other end of the box girder hole and are arranged in a staggered mode. The wire clamping seats and the wire feeders are arranged in the same length direction of the box girder, the wire winders are installed on the inner wall of the box girder hole, the wire winders are provided with steel cables, the steel cables sequentially penetrate through all the wire feeders and the fixed pulleys and return into the wire winders, the wire feeders can stretch out and draw back to tightly support the steel cables, locking structures are installed in the wire feeders, and when the locking structures are opened, the wire feeders are locked by the locking structures. When the two box girders get close to each other by a certain distance, the wire feeder is in butt joint with the wire clamping seat, so that a steel cable on the wire feeder is fed into the wire clamping seat, meanwhile, a locking structure in the wire feeder is opened, the wire feeder is contracted and does not make contact with the steel cable, and the winder is started to enable the two box girders to be pulled and extruded together by the steel cable. The pressure of each part of the connected surface of the two box girders is basically the same, and the structural adhesive between the two box girders is cured under the preset pressure stress, so that the quality problem caused by different pressure stresses of each part due to pre-tightening of a plurality of steel wire bundles in the prior art is avoided.
本发明涉及箱梁施工技术领域，具体公开了UHPC箱梁桥接缝构造，包括：至少四个送线器和至少三个定滑轮，均固定安装在箱梁洞一端的内壁上，送线器与定滑轮交错设置，至少四个卡线座，均固定安装在箱梁洞另一端的内壁上，且卡线座与送线器在箱梁的同一长度方向上，卷线器，安装箱梁洞的内壁上，所述卷线器上设置有钢索，所述钢索依次穿过所有送线器和定滑轮并回到卷线器中，所述送线器可伸缩撑紧钢索，所述送线器内安装有锁止结构，当锁止结构打开时，送线器收缩，当两个箱梁相互靠近到一定距离后，送线器与卡线座对接，从而把送线器上的钢索送入卡线座内，同时，送线器内的锁止结构打开，送线器收缩不与钢索接触，启动卷线器使两个箱梁被钢索拉动挤压在一起，使两个箱梁相接的面上各部位压力基本相同，两个箱梁之间的结构胶在预设压应力下固化，避免传统的通过多条钢丝束预紧容易导致各部位压应力不同出现质量问题。
UHPC box girder bridge joint structure and construction technology thereof
The invention relates to the technical field of box girder construction, and particularly discloses a UHPC box girder bridge joint structure which comprises at least four wire feeders, at least three fixed pulleys and at least four wire clamping seats, the wire feeders and the fixed pulleys are fixedly installed on the inner wall of one end of a box girder hole and are arranged in a staggered mode, and the wire clamping seats are fixedly installed on the inner wall of the other end of the box girder hole and are arranged in a staggered mode. The wire clamping seats and the wire feeders are arranged in the same length direction of the box girder, the wire winders are installed on the inner wall of the box girder hole, the wire winders are provided with steel cables, the steel cables sequentially penetrate through all the wire feeders and the fixed pulleys and return into the wire winders, the wire feeders can stretch out and draw back to tightly support the steel cables, locking structures are installed in the wire feeders, and when the locking structures are opened, the wire feeders are locked by the locking structures. When the two box girders get close to each other by a certain distance, the wire feeder is in butt joint with the wire clamping seat, so that a steel cable on the wire feeder is fed into the wire clamping seat, meanwhile, a locking structure in the wire feeder is opened, the wire feeder is contracted and does not make contact with the steel cable, and the winder is started to enable the two box girders to be pulled and extruded together by the steel cable. The pressure of each part of the connected surface of the two box girders is basically the same, and the structural adhesive between the two box girders is cured under the preset pressure stress, so that the quality problem caused by different pressure stresses of each part due to pre-tightening of a plurality of steel wire bundles in the prior art is avoided.
本发明涉及箱梁施工技术领域，具体公开了UHPC箱梁桥接缝构造，包括：至少四个送线器和至少三个定滑轮，均固定安装在箱梁洞一端的内壁上，送线器与定滑轮交错设置，至少四个卡线座，均固定安装在箱梁洞另一端的内壁上，且卡线座与送线器在箱梁的同一长度方向上，卷线器，安装箱梁洞的内壁上，所述卷线器上设置有钢索，所述钢索依次穿过所有送线器和定滑轮并回到卷线器中，所述送线器可伸缩撑紧钢索，所述送线器内安装有锁止结构，当锁止结构打开时，送线器收缩，当两个箱梁相互靠近到一定距离后，送线器与卡线座对接，从而把送线器上的钢索送入卡线座内，同时，送线器内的锁止结构打开，送线器收缩不与钢索接触，启动卷线器使两个箱梁被钢索拉动挤压在一起，使两个箱梁相接的面上各部位压力基本相同，两个箱梁之间的结构胶在预设压应力下固化，避免传统的通过多条钢丝束预紧容易导致各部位压应力不同出现质量问题。
UHPC box girder bridge joint structure and construction technology thereof
一种UHPC箱梁桥接缝构造及其施工工艺
LIU ZHIFENG (author) / SU NIANJIU (author) / LENG JIAJIN (author) / ZHOU YOU (author) / WU WEIHAO (author) / YANG FUFA (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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