Method for supporting beam body with deformation and without load change and support system
A support system and beam body technology, applied in the direction of pillars, bridges, bridge materials, etc., can solve the problems of large additional force of supports, uneven distribution of support loads, large support loads, etc., to reduce the additional force, reduce the number of supports, The effect of uniform load distribution
Pending Publication Date: 2021-08-17
ROAD & BRIDGE INT +1
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Problems solved by technology
[0004] In view of this, the purpose of the present invention is to solve the problem of uneven distribution of support load after local deformation of the beam body, large additional force on the support, resulting in excessive load of some supports, and provide a method for supporting the beam body without deformation and constant load. bracket system
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Embodiment 1
[0031] see Figure 1 ~ Figure 2 , is a support system for supporting beams with no deformation and constant load, including steel pipe columns 3 for supporting the beam body, and a transverse diaphragm 5 is installed on the top of the steel pipe column 3, and the transverse diaphragm 5 is welded to the steel pipe column through the support plate 6 3; a flexible deformation device with a stretchable length is arranged between the diaphragm 5 and the beam body; the flexible deformation device includes a spring 4 and an I-beam 1; the spring 4 is installed on the diaphragm 5, and a circular steel plate is installed on the upper end of the spring 4 2. The I-beam 1 is installed on the circular steel plate 2 to support the beam body.
[0032] In this embodiment, the outer diameter of the circular steel plate 2 is smaller than the inner hole diameter of the steel pipe column 3, and the upper end of the steel pipe column 3 is provided with a limiting slot. Move up and down in the card...
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The invention belongs to the technical field of civil construction. The invention relates to a method for supporting a beam body with deformation and without a load change and a support system. A flexible deformation device with the telescopic length is arranged between the beam body and a support, and the load of the beam body is transmitted to the support through the flexible deformation device; the length of the flexible deformation device is adjusted to adapt to the deformation amount of the beam body so that the support always supports the beam body; the support system comprises a support used for supporting the beam body, a bearing surface is arranged on the support, and a flexible deformation device with the telescopic length is arranged between the bearing surface and the main beam; one end of the flexible deformation device is contacted with the bearing surface, and the other end is contacted with the main beam; and the length of the flexible deformation device is always equal to the distance between the bearing surface and the beam body, and the load of the beam body is transmitted to the bearing surface. The overall rigidity of the support system is reduced by additionally arranging the flexible deformation device, additional loads borne by the supports are reduced, loads on the supports are evenly distributed, and the number of the supports can be effectively reduced.
Description
technical field [0001] The invention belongs to the technical field of civil construction, and relates to a method and a bracket system for supporting a beam without deformation and load. Background technique [0002] At present, the support construction is widely used in the cast-in-place construction of bridge girders because of its simple stress and mature technology. However, when the main girder is tensioned and prestressed, the beam body will be deformed, causing the upward deformation of the main girder to reduce the load on the lower bracket or completely disengage the bracket, otherwise the load on other parts of the bracket will increase. Due to factors such as beam end constraints, prestressed conditions, and elastic modulus of the bracket, changes in the force of the bracket, especially the increase in the force, are very unfavorable for construction safety. [0003] During the concrete pouring process of the main beam, the support mainly bears the wet weight of...
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IPC IPC(8): E01D21/00E04G25/00E01D101/28
CPCE01D21/00E04G25/00E01D2101/28E04G2025/006
Inventor 郝永明王宁李春宏潘啟洪周茹义李阳
Owner ROAD & BRIDGE INT