Trussed combination arch bridge open and filled spandrel connecting method and structure
A composite arch bridge and truss-type technology, which is applied in the empty-solid web transfer method and structural field of truss-type composite arch bridges, can solve problems such as easy cracking and uneven and continuous force transmission in structures, and achieve obvious force transmission channels, easy structure, and high quality easy effect
Inactive Publication Date: 2014-05-07
GUIZHOU TRANSPORTATION PLANNING SURVEY & DESIGN ACADEME
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Problems solved by technology
Due to the sudden change of section stiffness, the force transmission of the structure is not uniform and continuous, which makes this position prone to cracking
Method used
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[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but not as any limitation to the present invention.
[0015] Example. A method for handing over hollow and solid webs of truss composite arch bridges, such as figure 1 shown. The method is to form a rigid domain connection through the rigid wedge block 13 poured on site at the junction of the upper chord girder 7 and the lower chord girder 8 of the truss composite arch bridge and the solid web section 12 of the truss composite arch bridge, so that the force transmission of the truss composite arch bridge The pathways transition evenly. The rigid wedge such as figure 2 As shown, the rigid wedge block is composed of the upper chord floor extension plate 2, the lower chord top plate extension plate 3, the transverse partition 1 at the tiger’s mouth and the end partition 4 at the tiger’s mouth.
[0016] The hollow-solid web junction structure o...
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The invention discloses a trussed combination arch bridge open and filled spandrel connecting method and structure. The trussed combination arch bridge open and filled spandrel connecting method comprises enabling connecting positions between upper chord girds, lower chord girds and a filled spandrel section of the trussed combination arch bridge to form into rigid zone connection through cast-in-place rigid wedge blocks to enable a force transmission path of the trussed combination arch bridge to be performed uniform transition. According to the trussed combination arch bridge open and filled spandrel connecting method, a structure having stiffness mutation at the open and filled spandrel connecting position in the prior art is changed into the force transmission structure having the rigid zone effect due to the rigid wedge blocks, internal force is uniformly transmitted to the upper chord girds, the lower chord girds and the filled spandrel section through open and filled spandrel connecting position cross separation plates and open and filled spandrel connecting position end separation plates, and accordingly the force transmission path of the open and filled spandrel connecting position of the trussed combination arch bridge is obvious, stress of the integral open and filled spandrel connecting position area is optimized and the open and filled spandrel connecting position of the trussed combination arch bridge is prevented from cracking and leading to quality hazards. The trussed combination arch bridge open and filled spandrel connecting structure is easy to achieve and enables quality to be easy to guarantee.
Description
technical field [0001] The invention relates to a hollow-solid web handover method and structure of a truss composite arch bridge, belonging to the technical field of truss composite arch bridges. Background technique [0002] In the design of truss-type composite arch bridges, at the intersection of empty and solid webs (commonly known as the tiger's mouth), there is a sudden change in section and a complex structure, which makes the stress state here complicated. In the design of the existing truss-type composite arch bridge, only one transverse diaphragm is set at the main truss of the tiger's mouth, and no structural measures are taken for the middle box. Due to the sudden change in section stiffness, the force transmission of the structure is not uniform and continuous, which leads to cracking at this position. Contents of the invention [0003] The object of the present invention is to provide a method and structure for connecting hollow and solid webs of a truss co...
Claims
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IPC IPC(8): E01D4/00
Inventor 杜镔丁作常陈冠桦唐志贾宁凌桂香任仁龙万学佘远程杨健韦定超
Owner GUIZHOU TRANSPORTATION PLANNING SURVEY & DESIGN ACADEME