Supplementary tensioning equipment for prestressed concrete structure
A concrete structure and supplementary tension technology, which is applied in bridge construction, building construction, erection/assembly of bridges, etc., can solve the problems of large prestress loss, affecting the safety and reliability of bridges, etc. Effect
Pending Publication Date: 2020-12-04
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
However, in actual construction applications, the prestressed concrete structure has the problem of large prestress loss. Once the prestressed system construction is completed, the prestress loss of the prestressed concrete structure in the service stage of the bridge structure in the later period cannot be avoided and controlled. The ground affects the safety and reliability of the bridge in later use and operation
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[0032] It should be noted that, in the case of no conflict, the embodiments in the application and the technical features in the embodiments can be combined with each other. Undue Limitation of This Application.
[0033] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the description of this application, the orientation or positional relationship is the orientation or positional relationship based on the normal use of the tensioning equipment, for example figure 1 It should be understood that these orientation terms are only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be configured in a specific orientation and operation, and therefore should not be construed as limiting the application.
[0034] See Figure 1 to Figure 4 , the embodiment of...
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The embodiment of the invention provides supplementary tensioning equipment for a prestressed concrete structure. The supplementary tensioning equipment comprises a cylinder body, a sliding plate, a driving mechanism and a locking mechanism. An accommodating cavity is formed in the cylinder body. The sliding plate is located in the accommodating cavity, prestressed tendons of the prestressed concrete structure penetrate through the cylinder body and the sliding plate, and the prestressed tendons are connected with the sliding plate. The driving mechanism can drive the sliding plate to be awayfrom a concrete body of the prestressed concrete structure so as to tension the prestressed tendons. The locking mechanism can lock the sliding plate. According to the supplementary tensioning equipment provided by the embodiment of the invention, after the prestress loss is generated, the prestress loss is compensated through supplementary tensioning of the prestressed tendons so that the problemof the prestress loss can be better solved.
Description
technical field [0001] The present application relates to the technical field of prestressed concrete structures, in particular to a supplementary tensioning device for prestressed concrete structures. Background technique [0002] Prestressed concrete structures are widely used in bridge construction due to their advantages of safety, reliability, material saving, good crack resistance, and high rigidity. However, in actual construction applications, the prestressed concrete structure has the problem of large prestress loss. Once the prestressed system construction is completed, the prestress loss of the prestressed concrete structure in the service stage of the bridge structure in the later period cannot be avoided and controlled. The ground affects the safety and reliability of the bridge in later use and operation. Contents of the invention [0003] In view of this, the embodiment of the present application expects to provide a supplementary tensioning device for pres...
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IPC IPC(8): E01D21/00E04G21/12
CPCE01D21/00E04G21/12
Inventor 王晓峰胡振赵胤智朱孟君余海堂郑建民曹雪珂翟锋刘洋郭增伟
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP