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Tough material, preparation method and plate expansion prevention method of longitudinal connecting plate
The invention provides a tough material, a preparation method and a plate expansion prevention method of a longitudinal connecting plate, and relates to the technical field of longitudinal connecting plate type ballastless tracks. The early strength of the tough material is rapidly increased, the later elastic modulus is 1/300-1/2 of the elastic modulus of concrete, the compressive deformation capacity reaches 1% or above, the elastic recovery capacity reaches 99% or above, and the elastic modulus and the compressive deformation at high temperature can be further reduced by 10% or above. Pouring the tough material into the wide and narrow joints of the track plate in the high-risk section; and wide and narrow seam replacement of the high-risk section is completed. By pouring the wide and narrow joints with the tough material to release the temperature stress, the problems that an existing longitudinal connecting plate generates large temperature stress at high temperature, the elastic modulus of concrete at the joints is the same as that of a track plate, the deformation capacity is weak, the temperature stress cannot be released, the longitudinal connecting plate arches up in the weak joint link, and the longitudinal connecting plate is damaged are solved. And cracking, damage and upward arching of wide and narrow joints are avoided.
本发明提供了一种韧性材料、制备方法及纵连板的防胀板方法，涉及纵连板式无砟轨道技术领域，包括一种早强强度增长快、后期弹性模量为混凝土弹性模量的1/300至1/2、压缩变形能力达到1％以上、弹性恢复能力99％以上、高温下弹性模量和压缩变形可进一步变低10％以上的韧性材料及制备方法；将高风险区段轨道板宽窄接缝浇筑该韧性材料；完成高风险区段宽窄接缝更换。本发明通过采取韧性材料浇筑宽窄接缝释放温度应力，解决了现有纵连板在高温时产生较大的温度应力，接缝处混凝土弹性模量与轨道板弹性模量相同，变形能力弱，无法释放温度应力，导致纵连板在接缝薄弱环节上拱，影响轨道结构平顺性的问题，避免宽窄接缝开裂、破损和上拱。
Tough material, preparation method and plate expansion prevention method of longitudinal connecting plate
The invention provides a tough material, a preparation method and a plate expansion prevention method of a longitudinal connecting plate, and relates to the technical field of longitudinal connecting plate type ballastless tracks. The early strength of the tough material is rapidly increased, the later elastic modulus is 1/300-1/2 of the elastic modulus of concrete, the compressive deformation capacity reaches 1% or above, the elastic recovery capacity reaches 99% or above, and the elastic modulus and the compressive deformation at high temperature can be further reduced by 10% or above. Pouring the tough material into the wide and narrow joints of the track plate in the high-risk section; and wide and narrow seam replacement of the high-risk section is completed. By pouring the wide and narrow joints with the tough material to release the temperature stress, the problems that an existing longitudinal connecting plate generates large temperature stress at high temperature, the elastic modulus of concrete at the joints is the same as that of a track plate, the deformation capacity is weak, the temperature stress cannot be released, the longitudinal connecting plate arches up in the weak joint link, and the longitudinal connecting plate is damaged are solved. And cracking, damage and upward arching of wide and narrow joints are avoided.
本发明提供了一种韧性材料、制备方法及纵连板的防胀板方法，涉及纵连板式无砟轨道技术领域，包括一种早强强度增长快、后期弹性模量为混凝土弹性模量的1/300至1/2、压缩变形能力达到1％以上、弹性恢复能力99％以上、高温下弹性模量和压缩变形可进一步变低10％以上的韧性材料及制备方法；将高风险区段轨道板宽窄接缝浇筑该韧性材料；完成高风险区段宽窄接缝更换。本发明通过采取韧性材料浇筑宽窄接缝释放温度应力，解决了现有纵连板在高温时产生较大的温度应力，接缝处混凝土弹性模量与轨道板弹性模量相同，变形能力弱，无法释放温度应力，导致纵连板在接缝薄弱环节上拱，影响轨道结构平顺性的问题，避免宽窄接缝开裂、破损和上拱。
Tough material, preparation method and plate expansion prevention method of longitudinal connecting plate
一种韧性材料、制备方法及纵连板的防胀板方法
LIU JING (author) / ZHENG XINGUO (author) / LI SHUMING (author) / JIN HAO (author) / DOU DONGBIN (author) / PAN YONGJIAN (author) / ZHANG XU (author) / ZHANG CHI (author) / HU JIALIN (author) / YANG DEJUN (author)
2023-10-03
Patent
Electronic Resource
Chinese
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