Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for additionally paving UHPC (Ultra High Performance Concrete) layer on bridge deck concrete pavement layer
The invention relates to a method for additionally paving a UHPC (Ultra High Performance Concrete) layer on a bridge deck concrete pavement layer, and belongs to the technical field of bridge maintenance and reinforcement engineering. After the existing pavement layer is drilled, the UHPC is poured and maintained, the UHPC layer and the existing bridge deck structure are firmly connected through the UHPC columns in the holes, so that the bonding strength between the UHPC layer and the existing bridge deck structure is improved, and the phenomenon that the UHPC layer is debonded or disengaged in the subsequent using process is avoided. The hole is in a thin waist shape, and a steel wire mesh winding drum is placed in the hole, so that the shear resistance and the pulling resistance of the UHPC column can be further improved. According to the method, traditional steel bar planting operation can be avoided, the operation environment is improved, damage to an existing structure is reduced, the waterproofness and corrosion resistance of new bridge deck pavement are greatly improved, the operation of completely dismantling an existing pavement layer is omitted, and the project progress is accelerated.
本发明涉及一种桥面混凝土铺装层加铺UHPC层的方法，属于桥梁维修加固工程技术领域。通过在既有铺装层上钻孔，浇筑UHPC并养护后，孔洞内的UHPC柱将UHPC层与既有桥面结构牢固连接，以提高UHPC层与既有桥面结构间的结合强度，避免随后的使用过程中出现UHPC层的脱粘或脱空现象。通过使孔洞呈细腰型，及在孔洞内放入钢丝网卷筒，可进一步提高该UHPC柱的抗剪和抗拔能力。本发明中的方法可避免传统植筋作业，改善作业环境，减小对既有结构造成的损伤，大幅度提高新桥面铺装的防水性和耐腐性，省去了全部拆除既有铺装层的作业，加快了工程进度。
Method for additionally paving UHPC (Ultra High Performance Concrete) layer on bridge deck concrete pavement layer
The invention relates to a method for additionally paving a UHPC (Ultra High Performance Concrete) layer on a bridge deck concrete pavement layer, and belongs to the technical field of bridge maintenance and reinforcement engineering. After the existing pavement layer is drilled, the UHPC is poured and maintained, the UHPC layer and the existing bridge deck structure are firmly connected through the UHPC columns in the holes, so that the bonding strength between the UHPC layer and the existing bridge deck structure is improved, and the phenomenon that the UHPC layer is debonded or disengaged in the subsequent using process is avoided. The hole is in a thin waist shape, and a steel wire mesh winding drum is placed in the hole, so that the shear resistance and the pulling resistance of the UHPC column can be further improved. According to the method, traditional steel bar planting operation can be avoided, the operation environment is improved, damage to an existing structure is reduced, the waterproofness and corrosion resistance of new bridge deck pavement are greatly improved, the operation of completely dismantling an existing pavement layer is omitted, and the project progress is accelerated.
本发明涉及一种桥面混凝土铺装层加铺UHPC层的方法，属于桥梁维修加固工程技术领域。通过在既有铺装层上钻孔，浇筑UHPC并养护后，孔洞内的UHPC柱将UHPC层与既有桥面结构牢固连接，以提高UHPC层与既有桥面结构间的结合强度，避免随后的使用过程中出现UHPC层的脱粘或脱空现象。通过使孔洞呈细腰型，及在孔洞内放入钢丝网卷筒，可进一步提高该UHPC柱的抗剪和抗拔能力。本发明中的方法可避免传统植筋作业，改善作业环境，减小对既有结构造成的损伤，大幅度提高新桥面铺装的防水性和耐腐性，省去了全部拆除既有铺装层的作业，加快了工程进度。
Method for additionally paving UHPC (Ultra High Performance Concrete) layer on bridge deck concrete pavement layer
一种桥面混凝土铺装层加铺UHPC层的方法
WANG LEI (Autor:in) / ZHANG SHUFENG (Autor:in) / WU QINGBO (Autor:in) / GU MING'EN (Autor:in) / CHAI XIAOLONG (Autor:in) / JIANG HAIBO (Autor:in) / ZHANG SHULEI (Autor:in)
22.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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