A Method of Strengthening the Hollow Slab Girder Bridge
A hollow plate and hollow technology, which is applied in bridge reinforcement, bridge, bridge maintenance, etc., can solve the problems of low reinforcement efficiency and no interaction, so as to improve reinforcement efficiency, eliminate veneer stress, and achieve better reinforcement effect. Effect
Active Publication Date: 2017-08-11
RES INST OF HIGHWAY MINIST OF TRANSPORT
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Problems solved by technology
[0005] In view of this, an object of the present invention is to propose a method for reinforcing hollow slab girder bridges, to solve the problem of the existing reinforcement technology for hollow slab girder bridges, due to the lack of interaction between the hollow slabs, resulting in The problem of low efficiency
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[0021] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.
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A method for reinforcing a hollow slab girder bridge, comprising the following steps: respectively arranging force conversion devices with a circular section on the outer walls of the side plates on both sides of the hollow slab girder bridge; Prestressed tendons, the two ends of the transverse prestressed tendons surround the force conversion devices on both sides of the hollow slab girder bridge respectively, and are fixed on the anti-collision barriers on both sides of the hollow slab girder bridge; the tangent point between the force conversion device and the anti-collision barrier The angle between the transverse prestressed tendons between the fixed points and the transverse prestressed tendons at the bottom of the hollow slab girder bridge is less than 90 degrees, so that the prestress of the transverse prestressed tendons produces a force along the transverse direction; in the hollow slab Steel beams are set at the bottom of the girder bridge. In this method, the force conversion devices installed on both sides of the hollow slab girder bridge pull the transverse prestressed tendons on the bridge, and anchor steel beams at the bottom of the bridge slab, so that there is interaction between the hollow slabs, which greatly eliminates the It eliminates the phenomenon of veneer stress, improves the reinforcement efficiency, and the reinforcement effect is better.
Description
technical field [0001] The invention belongs to the technical field of reinforcing hollow slab girder bridges, in particular to a method for reinforcing hollow slab girder bridges. Background technique [0002] The hollow slab girder bridge assembled with shallow hinge joints will cause the phenomenon of "single slab stress" due to the cracking of the hinge joints, resulting in insufficient bearing capacity of the hollow slab girder bridge, which needs to be reinforced. In engineering practice, methods such as strengthening the bridge deck pavement, pasting steel plates or carbon fiber materials, and longitudinally tensioning external prestress are often used for reinforcement. The smooth flow of the road network. [0003] At present, for the reinforcement technology of hollow slab girder bridges, some schemes choose to install steel beams at the bottom of the hollow slab girder bridge, and some schemes choose to stretch prestressed tendons at the bottom of the hollow slab ...
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IPC IPC(8): E01D22/00
Inventor 和海芳张劲泉
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT