Method of constructing simple and continuous composite bridges
A combined bridge and simply supported technology, used in bridges, buildings, bridge parts, etc., can solve the problems of earthquake damage, danger, lifting and reducing construction difficulties of bearing blocks.
Inactive Publication Date: 2006-04-19
丘民世
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[0011] However, the problem with the method cited in Invention 2 is that construction joints are generated due to the difference in timing of application of the bridge deck concrete to the positive moment and negative moment areas, and due to the construction joints being performed on the pier, that is, the second and third supports. Difficulties and dangers in construction due to the lifting and lowering of
[0012] In addition, in both methods of citing Inventions 1 and 2, the bridge bearing acting as a medium that transmits the load of its superstructure to the substructure is composed of a rotatable hinge support and a rotatable and movable Consisting of roller supports, the bridge bearing mounts must be constantly maintained to ensure the safety of the bridge superstructure, and the bearing mounts have the potential to be damaged by earthquakes
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[0048] Hereinafter, a method of constructing a simple and continuous composite bridge will be described with reference to the accompanying drawings. This construction method can be applied to pre-bending composite bridges, prestressed concrete (PSC) composite bridges, steel box truss bridges, plate truss bridges, and long-span truss bridges.
[0049] Figures 4a to 7d is to show a method of constructing a simply supported composite bridge in which the girders are integrated into the abutment. Figures 4a to 4d shows the method in which the bridge abutment part 1 is connected to the pre-bent girder 2 in one abutment while the pre-bending girder 2 manufactured in simply supported beam form is simply supported on a pair of abutments . like Figure 4a As shown, the H or □-shaped section steel 3 is implanted in the bridge support part 1, and the connecting plate 4 is welded to the section steel 3 to connect the section steel 3 to the lower flange 60 of the beam 2, and the sectio...
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Disclosed herein is a method of constructing simple and continuous composite bridges in which compressive stress is additionally introduced to an upper floor slab concrete in a negative moment region and the lower flange of a composite girder by lowering and lifting up end supports. The method includes the steps of providing first and second abutments, implanting a shape steel in said first abutment, simply resting a beam on said first and second abutments, connecting said shape steel to the lower flange of said beam, applying a connecting concrete to a portion ranging from an upper end of said beam first abutment to a neutral axis of said beam, lowering a support near said second abutment, applying a concrete to a portion ranging from an upper end of said connecting concrete to a bottom plate of said beam, applying a floor slab concrete to said beam, and lifting up the lowered support near said second abutment.
Description
technical field [0001] The present invention relates to a method of constructing simply supported and continuous composite bridges such as simply supported and continuous pre-bent composite bridges, prestressed concrete (PSC) composite bridges, steel box truss bridges, slab truss bridges , and long-span truss bridges. Background technique [0002] In conventional technology, regarding the method of constructing simply supported and continuous composite bridges, for simply supported composite bridges, Korean Unexamined Patent Application No. 0250937 (hereinafter referred to as Cited Invention 1) discloses a construction method using temporary supports A method for simply supported pre-bent composite bridges, and for continuous composite bridges, Korean Unexamined Patent Application No. 105754 (hereinafter referred to as Cited Invention 2) discloses a continuous prestressed composite beam and the use of the composite beam Method for constructing continuous prestressed composi...
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IPC IPC(8): E01D21/00E01D1/00E01D2/00E01D19/12E01D101/26E01D101/28E01D101/30
CPCE01D2101/285E01D21/00E01D1/00
Inventor 丘民世
Owner 丘民世