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Curved surface support prepressing method

A curved surface and preloading technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of complex stress conditions and great harm, and achieve the effect of accurate acquisition and accuracy.

Active Publication Date: 2020-04-14
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD +1
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Problems solved by technology

[0003] Compared with the planar support, the force of the existing curved support is more complicated than that of the planar support, and the preloading of the curved support cannot be carried out in the way of preloading the planar support. selection, and the loading sequence of the preloaded objects to ensure that the preloaded results can accurately reflect the force of the curved surface support, otherwise, once there is a deviation, the harm will be greater

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0043] The invention provides a preloading method for a curved surface support to solve the cumbersome and time-consuming operation of the existing preloading method for curved surface supports, the selection of preloading positions and monitoring points, and the unreasonable design of the loading sequence of preloaded objects , it is difficult to ensure that the preloading results can accurately reflect the safety status of the curved surface support.

[0044] Such as figure 1 shown, combined with figure 2 and image 3 As shown, in ...

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Abstract

The invention relates to the field of bridge construction, in particular to a curved surface support prepressing method. The method comprises the steps that a plurality of target support stand columnsare selected from support stand columns of a curved surface support, monitoring points are selected from the upper ends and the lower ends of the target support stand columns, and monitoring data ofall the monitoring points of the curved surface support before prepressing are obtained; the support stand columns are of a structure, used for mainly supporting a supported object, in the curved surface support. A curved surface formed at the top of the curved surface bracket is uniformly and fully paved with a first pre-pressing object; a second pre-pressing object is added on the first pre-pressing object corresponding to the condition that the load on the curved surface support is greater than the average load of the curved surface support according to a preset rule according to the load condition of the supported object on the curved surface support; monitoring data of each monitoring point of the curved surface support is periodically acquired in the prepressing process, and the prepressing test of the curved surface support is end when the monitoring data of each prepressing period meet preset requirements. According to the invention, the monitoring data of the curved surfacesupport can be rapidly and accurately obtained, so that the accuracy of a pre-pressing result is ensured.

Description

【Technical field】 [0001] The invention relates to the field of bridge construction, in particular to a preloading method for a curved support. 【Background technique】 [0002] With the rapid development of my country's infrastructure construction, a large number of cast-in-place bridges need to be erected. In bridge construction, it is necessary to preload the support with heavy objects in advance to ensure the reliability of the support and understand the elastic deformation of the support during construction. , and eliminate the inelastic deformation of the bracket, and test the bearing capacity and stability of the structure. Therefore, the preloading of the bracket is an indispensable construction process after the bracket is erected. [0003] Compared with the planar support, the force of the existing curved support is more complicated than that of the planar support, and the preloading of the curved support cannot be carried out in the way of preloading the planar suppo...

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 吴建峰夏江南李鸿文路宏喻丽杨杰张涛刘杰刘怀刚肖向荣高世强陈勇丰陈振宇唐代新韩春鹏
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
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