Overall prepressing device for hanging basket
An integral, bottom-basket technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of being greatly affected by wind loads, high labor intensity, and troublesome procedures.
Active Publication Date: 2014-12-03
BEIJING MUNICIPAL ROAD & BRIDGE
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Problems solved by technology
The disadvantages of this method are: bagging, weighing, hoisting, dismantling and other processes are labor-intensive; the construction period is long; in case of rainy days, the weight of the sand bag will not match the actual load
However, this method still has disadvantages such as cumbersome procedures, long construction period, difficult hoisting, and great influence of wind loads.
Method used
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Embodiment
[0032] The present invention will be described in more detail below through specific examples.
[0033] 1. Project Background
[0034] The main bridge of the bridge is a continuous box girder, and the bridge span is composed of a single box and single room continuous beam of 40m+3*70m+40m. The top width of the box girder is 13m, the length of the flange plate is 3.45m, the beam height at the fulcrum is 4.2m, and the height of the mid-span beam is 2.2m. The beam height and bottom plate thickness change according to a quadratic parabola. The thickness of the web is 70cm-50cm (the thickness of the web at the fulcrum is 70cm), the thickness of the bottom plate is 110cm-30cm (the thickness of the bottom plate at the fulcrum is 110cm), and the thickness of the top plate is 28cm.
[0035] The pouring of the box girder is divided into 8 stages, in which the length of the 0# beam section is 10m, and the length of the closing section is 2.0m. 4.5m. The length of the closing section is ...
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The invention provides an overall prepressing device for a hanging basket. The overall prepressing device comprises a loading system and a connection system, wherein the loading system is arranged on the lower part of the hanging basket; when the loading system applies a load, the connection system is used for transmitting the load to the structure on the upper part of the hanging basket, so that the overall hanging basket is stressed; the connection system comprises a distribution beam and a connection hanging rod; the distribution beam comprises an upper distribution beam and a lower distribution beam; the upper distribution beam is positioned on a sliding beam of the hanging basket; the lower distribution beam is positioned on a bottom basket longitudinal beam of the hanging basket; and the connection hanging rod is connected with the upper distribution beam and the lower distribution beam. With the adoption of the device, prepressing of the hanging basket structure can accord with the actual stress situation.
Description
technical field [0001] The invention relates to an integral preloading device for a hanging basket, in particular to an integral preloading device for a high pier hanging basket. Background technique [0002] The preloading of the hanging basket refers to the preloading of the hanging basket installed on the 0# block to verify the strength, stiffness and Stability, while eliminating the nonlinear deformation of the structure, the elastic deformation of the structure is obtained as the basis for the elevation of the vertical formwork. [0003] Hanging basket preloading is an essential process in the construction of cantilevered bridges. However, with the development of the highway traffic industry, the height of the pier column is constantly increasing, and now the height of some bridge pier columns has exceeded 100 meters. Faced with such a high pier column, the preloading of the hanging basket is very difficult; at the same time, the preloading should simulate the actual ...
Claims
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IPC IPC(8): E01D21/10
Inventor 叶锦华吴杰吕嘉王辉李瑞银
Owner BEIJING MUNICIPAL ROAD & BRIDGE