A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of bridge expansion joint
The invention discloses a construction method of a bridge expansion joint. The construction method relates to a seamless expansion structure. The construction method comprises the steps of cutting an expansion joint, cleaning the expansion joint, installing a steel cover plate and paving an asphalt mixture. According to the preparation method of the anti-freezing modified asphalt mixture provided by the invention, the anti-freezing modified asphalt mixture prepared by performing anti-freezing modification on asphalt modified by a polyurethane prepolymer has excellent low-temperature resistance, and does not have a low-temperature cracking phenomenon even in severe cold winter, so that the safety of bridge floor expansion joints in winter is ensured; the modified asphalt mixture disclosed by the invention is low in water absorption rate, excellent in waterproof performance and reliable in sealing performance, and is very effective for preventing rainwater from damaging expansion joints. The structure comprises the asphalt mixture, the cover steel plate and the like, and has the advantages of low manufacturing cost, convenience in construction, short construction period, long service time, easiness in maintenance, comfort in driving, no bumping phenomenon and the like.
本发明公开了一种桥梁伸缩缝的施工方法为无缝式伸缩结构，步骤包括：切割伸缩缝，清理伸缩缝，安装钢盖板和铺筑沥青混合料；本发明提供了一种抗冻改性沥青混合料的制备方法，经过聚氨酯预聚体改性后的沥青经过抗冻改性后制备得到的抗冻改性沥青混合料，具有优异的抗低温性能，即使在严寒的冬季也不会出现低温开裂的现象，保证冬季桥面伸缩缝的安全；本发明的改性沥青混合料的吸水率低，具有优良的防水性能，密封性可靠，对于防止雨水对伸缩缝的损害非常有效。该种结构有沥青混合料，盖钢板等结构组成，具有造价低、施工方便、工期短、使用时间长易维修、行车舒适无跳车现象等优点。
Construction method of bridge expansion joint
The invention discloses a construction method of a bridge expansion joint. The construction method relates to a seamless expansion structure. The construction method comprises the steps of cutting an expansion joint, cleaning the expansion joint, installing a steel cover plate and paving an asphalt mixture. According to the preparation method of the anti-freezing modified asphalt mixture provided by the invention, the anti-freezing modified asphalt mixture prepared by performing anti-freezing modification on asphalt modified by a polyurethane prepolymer has excellent low-temperature resistance, and does not have a low-temperature cracking phenomenon even in severe cold winter, so that the safety of bridge floor expansion joints in winter is ensured; the modified asphalt mixture disclosed by the invention is low in water absorption rate, excellent in waterproof performance and reliable in sealing performance, and is very effective for preventing rainwater from damaging expansion joints. The structure comprises the asphalt mixture, the cover steel plate and the like, and has the advantages of low manufacturing cost, convenience in construction, short construction period, long service time, easiness in maintenance, comfort in driving, no bumping phenomenon and the like.
本发明公开了一种桥梁伸缩缝的施工方法为无缝式伸缩结构，步骤包括：切割伸缩缝，清理伸缩缝，安装钢盖板和铺筑沥青混合料；本发明提供了一种抗冻改性沥青混合料的制备方法，经过聚氨酯预聚体改性后的沥青经过抗冻改性后制备得到的抗冻改性沥青混合料，具有优异的抗低温性能，即使在严寒的冬季也不会出现低温开裂的现象，保证冬季桥面伸缩缝的安全；本发明的改性沥青混合料的吸水率低，具有优良的防水性能，密封性可靠，对于防止雨水对伸缩缝的损害非常有效。该种结构有沥青混合料，盖钢板等结构组成，具有造价低、施工方便、工期短、使用时间长易维修、行车舒适无跳车现象等优点。
Construction method of bridge expansion joint
一种桥梁伸缩缝的施工方法
SUN ZHENGDONG (author) / ZHANG XIAOTING (author) / TIAN YONGYUAN (author) / XIE QIANGJUN (author) / ZHANG DALI (author) / JIA ZHIQIANG (author) / REN CONG (author) / FENG LIANG (author) / SUN HONGXIA (author) / ZHANG ZEFENG (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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