Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of camber tower cable-stayed bridge with tower, beam and cable cooperative construction
The invention discloses a construction method of an outwards-inclined tower cable-stayed bridge with tower, beam and cable cooperative construction, and relates to the field of bridge structure construction and control. The method comprises the following steps: segmenting an outward inclined upper tower column from bottom to top, and defining the number of stay cables connected to each segment; the sum of the tensile stress of the outwards-inclined upper tower column and the pressure stress of all the stay cables is smaller than or equal to a concrete tensile strength design value; according to the segmentation requirements, the outwards-inclined upper tower columns are constructed in segments from bottom to top, and after construction of each segment of the outwards-inclined upper tower column is completed, the segment of the outwards-inclined upper tower column is connected with the corresponding segment of the main beam through a stay cable; and one end of each stay cable is fixed with the outwards inclined upper tower column, and the other end of each stay cable is fixed with one section of main beam. On the basis that the temporary facility cost is not increased, the problem that the tensile stress of the inner side of the outwards-inclined tower heel is too large is solved, and the adverse effects of structural cracking and large transverse deformation on follow-up cable saddle installation and positioning and stay cable tensioning caused by the too large tensile stress of the inner side of the outwards-inclined tower heel are avoided.
本发明公开了一种塔梁索协同施工的外倾塔斜拉桥的施工方法，涉及桥梁结构施工及控制领域。该方法包括以下步骤：对外倾上塔柱从下至上进行分段、并定义每段上连接的斜拉索数量；外倾上塔柱的拉应力与所有斜拉索的压应力之和小于等于混凝土抗拉强度设计值；按照上述分段要求，分节段自下而上的对外倾上塔柱进行施工，每一段外倾上塔柱施工完成后，将该段外倾上塔柱通过斜拉索与主梁的对应节连接；每根斜拉索的一端与外倾上塔柱固定，另一端与一节主梁固定。本发明能够在不增加临时设施成本的基础上，解决外倾塔跟内侧拉应力过大的问题，避免其引起结构开裂及较大的横向变形对后续索鞍安装定位、斜拉索张拉的不利影响。
Construction method of camber tower cable-stayed bridge with tower, beam and cable cooperative construction
The invention discloses a construction method of an outwards-inclined tower cable-stayed bridge with tower, beam and cable cooperative construction, and relates to the field of bridge structure construction and control. The method comprises the following steps: segmenting an outward inclined upper tower column from bottom to top, and defining the number of stay cables connected to each segment; the sum of the tensile stress of the outwards-inclined upper tower column and the pressure stress of all the stay cables is smaller than or equal to a concrete tensile strength design value; according to the segmentation requirements, the outwards-inclined upper tower columns are constructed in segments from bottom to top, and after construction of each segment of the outwards-inclined upper tower column is completed, the segment of the outwards-inclined upper tower column is connected with the corresponding segment of the main beam through a stay cable; and one end of each stay cable is fixed with the outwards inclined upper tower column, and the other end of each stay cable is fixed with one section of main beam. On the basis that the temporary facility cost is not increased, the problem that the tensile stress of the inner side of the outwards-inclined tower heel is too large is solved, and the adverse effects of structural cracking and large transverse deformation on follow-up cable saddle installation and positioning and stay cable tensioning caused by the too large tensile stress of the inner side of the outwards-inclined tower heel are avoided.
本发明公开了一种塔梁索协同施工的外倾塔斜拉桥的施工方法，涉及桥梁结构施工及控制领域。该方法包括以下步骤：对外倾上塔柱从下至上进行分段、并定义每段上连接的斜拉索数量；外倾上塔柱的拉应力与所有斜拉索的压应力之和小于等于混凝土抗拉强度设计值；按照上述分段要求，分节段自下而上的对外倾上塔柱进行施工，每一段外倾上塔柱施工完成后，将该段外倾上塔柱通过斜拉索与主梁的对应节连接；每根斜拉索的一端与外倾上塔柱固定，另一端与一节主梁固定。本发明能够在不增加临时设施成本的基础上，解决外倾塔跟内侧拉应力过大的问题，避免其引起结构开裂及较大的横向变形对后续索鞍安装定位、斜拉索张拉的不利影响。
Construction method of camber tower cable-stayed bridge with tower, beam and cable cooperative construction
一种塔梁索协同施工的外倾塔斜拉桥的施工方法
ZHANG MEILING (Autor:in) / LI ZELU (Autor:in) / JIANG ZHIGANG (Autor:in) / WANG WENYANG (Autor:in) / PENG XUMIN (Autor:in) / CHEN FENG (Autor:in) / REN HONGCHANG (Autor:in) / WANG KEBING (Autor:in) / TANG JIARUI (Autor:in) / LI HUAPENG (Autor:in)
30.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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