Synchronous tensioning and releasing system for pre-tensioning method prefabricated beam plate
A technology of synchronous tensioning and prefabricated beams, which is applied in the direction of manufacturing tools and ceramic molding machines, to reduce prestress friction loss, reduce processes, and ensure the quality of beams and slabs
Pending Publication Date: 2021-03-16
GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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Problems solved by technology
[0002] Among the prestressed structure manufacturing methods, the pretensioning method has the advantages of simple process, good durability, no stress concentration under the anchor, etc., and has incomparable advantages over the posttensioning method; but the pretensioning method still has the prestressed tensioning method, folding Difficulties such as the control value of the initial tension of the wire harness, the reliability of the steel strand connector, and the synchronization and stability during the tensioning process need to be resolved
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[0013] The present invention will be further described below in conjunction with the accompanying drawings.
[0014] like Figure 1 to Figure 4 As shown, a pre-tensioned prefabricated beam-slab synchronous tensioning and tensioning system includes a first reaction wall 2, a first anchor trolley 5, two first bogies 6, several benders 7, a second Bogie 8, second anchor trolley 11, second reaction force wall 9 and steel strand 13, the first jack 1 and the second reaction force wall 2 and the second reaction force wall 9 are installed respectively Jack 12, the first jack 1 and the second jack 12 are arranged oppositely, and the first jack 1 and the second jack 12 are connected to the first jack 1 and the second jack 12 through four tension rods 4 respectively. An anchoring trolley 5 and a second anchoring trolley 11, one end of the steel strand 13 is anchored on the first anchoring trolley 5 through a single hole anchor, and the other end of the steel strand passes through the fi...
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The invention discloses a synchronous tensioning and releasing system for a pre-tensioning method prefabricated beam plate. The synchronous tensioning and releasing system comprises a first reaction wall, a first anchoring trolley, a second anchoring trolley, a second reaction wall, steel strands and a plurality of bending devices, wherein a first jack and a second jack are installed on the firstreaction wall and the second reaction wall respectively, the first jack and the second jack are oppositely arranged, the first jack and the second jack are connected with the first anchoring trolley and the second anchoring trolley through tensioning pull rods respectively, two first bogies are arranged between the first anchoring trolley and the second anchoring trolley, bending devices are arranged between the two first bogies at intervals, one end of each steel strand is anchored to the first anchoring trolley, and the other end of each steel strand penetrates through the first bogies and the bending devices and then is anchored to the second anchoring trolley. The synchronous tensioning and releasing system has few procedures, is simple and convenient to operate and stable in structure, and has better popularization and application prospects.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a pre-tensioned prefabricated beam-slab synchronous tensioning and tensioning system. Background technique [0002] Among the prestressed structure manufacturing methods, the pretensioning method has the advantages of simple process, good durability, no stress concentration under the anchor, etc., and has incomparable advantages over the posttensioning method; but the pretensioning method still has the prestressed tensioning method, folding Difficulties such as the control value of the initial tension of the wire harness, the reliability of the steel strand connector, and the synchronization and stability during the tensioning process need to be resolved. [0003] At present, only a small part of the prestressed pretensioning method used in engineering is suitable for the straight line beam tensioning of hollow slabs. It is different from the pretensioned broken line ...
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IPC IPC(8): B28B23/04
CPCB28B23/043
Inventor 刘新来郭子学唐博学杨超罗雄鹰李仕军
Owner GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG