A Method of Accurately Controlling the Elevation of Cement Bridge Deck Pavement
A precise control and bridge deck paving technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of difficult elevation control network, too many consumables for elevation control network, inability to recycle, etc., to speed up the construction progress, Guarantee the quality of construction and the effect of small amount of construction work
Active Publication Date: 2018-07-20
SINOHYDRO ENG BUREAU 4
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Problems solved by technology
At present, the control of the pavement elevation of the concrete bridge deck is mainly through the arrangement of the elevation control network to control the elevation of the guide rail. The laying of the elevation control network is more difficult. , and cannot be recycled
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[0035] According to the width of the bridge deck, determine the pile position layout of the reinforced piles. The bridge deck of this project is 16.75 meters wide, and the reinforced piles are arranged in three rows along the route. The distance between the reinforced piles in each row of reinforced piles is one meter apart. Use red paint to mark the pile position of each steel pile on the beam surface; use an electric hammer with a drill bit diameter of 12mm to drill holes one by one for the marked pile locations, and the holes are 5 cm deep into the T-beam roadway slab; the steel pile is 17 cm long. Cold-drawn φ10 light round steel bars are made, and the finished steel bar piles are inserted into the holes one by one; then the measured elevation of the T-beam top of each hole is accurately measured, the corresponding actual bridge deck thickness is calculated, and the actual length of the steel bar piles is determined; Mark the position of the top of the steel bar pile, and u...
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The invention discloses a method of precisely controlling the elevation of concrete bridge deck pavement and is aimed at providing a method of precisely controlling the elevation of concrete bridge deck pavement with high construction efficiency. The method comprises following steps: (1) determining the number of steel bar pile rows and the space between adjacent two rows according to the width of a bridge deck, and marking the pile positions of steel bar piles on the ground; (2) punching at marked pile positions; (3) making steel bar piles and inserting the steel bar piles in the holes one by one; (4) measuring the actual measurement elevation of T girder top of each hole, calculating the corresponding actual thickness of bridge deck and determining actual length of the steel bar piles; cutting off extra-length steel bars with steel bar cutting nippers and again inserting the steel bar piles into the holes; (5) making guide beams and welding steel sleeves on the guide beams with the same interval of the steel bar piles; (6) finally, sleeving the steel bar piles of the same row one to one with the steel sleeves on the guide beams, making the guide beams as walking tracks for vibration beams; therefore, the elevation of bridge decks can be accurately controlled.
Description
technical field [0001] The invention relates to the technical field of bridge deck pavement, in particular to a method for precisely controlling the elevation of cement bridge deck pavement. Background technique [0002] Bridge deck pavement is a protective layer paved on the bridge deck with asphalt concrete, cement concrete, high molecular polymer and other materials in order to protect the bridge deck and distribute the concentrated load of the wheels. The function is to protect the bridge deck from direct abrasion of the wheels or tracks, to protect the girder from rain erosion, and to disperse the concentrated load of the wheels. Cement concrete is widely used as a common bridge deck pavement in our country. [0003] The concrete on the bridge deck is used for leveling, waterproofing and transmitting wheel pressure. Due to its thin thickness, the shrinkage deformation is different from the creep and shrinkage age of the main girder, so that the shear force on the conta...
Claims
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IPC IPC(8): E01D21/00E01D19/12
CPCE01D19/125E01D21/00
Inventor 王雄武
Owner SINOHYDRO ENG BUREAU 4