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用碳纤维织物增强砂浆加固现有桥梁结构的抗剪和抗弯性能

Strengthening of Existing Bridge Structures for Shear and Bending with Carbon Textile-Reinforced Mortar.

作者信息

Herbrand Martin, Adam Viviane, Classen Martin, Kueres Dominik, Hegger Josef

机构信息

Institute of Structural Concrete, RWTH Aachen University, 52056 Aachen, Germany.

出版信息

Materials (Basel). 2017 Sep 19;10(9):1099. doi: 10.3390/ma10091099.

DOI:10.3390/ma10091099
PMID:28925962
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5615753/
Abstract

Increasing traffic loads and changes in code provisions lead to deficits in shear and flexural capacity of many existing highway bridges. Therefore, a large number of structures are expected to require refurbishment and strengthening in the future. This projection is based on the current condition of many older road bridges. Different strengthening methods for bridges exist to extend their service life, all having specific advantages and disadvantages. By applying a thin layer of carbon textile-reinforced mortar (CTRM) to bridge deck slabs and the webs of pre-stressed concrete bridges, the fatigue and ultimate strength of these members can be increased significantly. The CTRM layer is a combination of a corrosion resistant carbon fiber reinforced polymer (CFRP) fabric and an efficient mortar. In this paper, the strengthening method and the experimental results obtained at RWTH Aachen University are presented.

摘要

交通荷载的增加和规范条款的变化导致许多现有公路桥梁的抗剪和抗弯能力不足。因此，预计未来大量结构需要翻新和加固。这一预测是基于许多老旧公路桥梁的现状。存在多种用于桥梁的加固方法以延长其使用寿命，每种方法都有特定的优缺点。通过在桥面板和预应力混凝土桥梁的腹板上涂抹一层薄的碳织物增强砂浆（CTRM），这些构件的疲劳强度和极限强度可显著提高。CTRM层是耐腐蚀碳纤维增强聚合物（CFRP）织物与高效砂浆的组合。本文介绍了亚琛工业大学的加固方法及实验结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/7b97e94c9b37/materials-10-01099-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/2a64e54d672c/materials-10-01099-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/84d53c2dd897/materials-10-01099-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/649eac19dd9c/materials-10-01099-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/1b603f494daf/materials-10-01099-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/71f9a2d49489/materials-10-01099-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/bdc601dd83e4/materials-10-01099-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/bb14ecb61c90/materials-10-01099-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/e61ade9f8f8a/materials-10-01099-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/7b97e94c9b37/materials-10-01099-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/2a64e54d672c/materials-10-01099-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/21aba29465b1/materials-10-01099-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/039c4553e3d4/materials-10-01099-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/761ff3ba8d47/materials-10-01099-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/d520738b044d/materials-10-01099-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/84d53c2dd897/materials-10-01099-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/eeb128f83547/materials-10-01099-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/649eac19dd9c/materials-10-01099-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/1b603f494daf/materials-10-01099-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/71f9a2d49489/materials-10-01099-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/bdc601dd83e4/materials-10-01099-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/bb14ecb61c90/materials-10-01099-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/e61ade9f8f8a/materials-10-01099-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0e9/5615753/7b97e94c9b37/materials-10-01099-g014.jpg

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