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CN-121992725-A - Waterproof construction method for segmental beam bridge deck

CN121992725ACN 121992725 ACN121992725 ACN 121992725ACN-121992725-A

Abstract

The application belongs to the field of building construction, and mainly relates to a segmental beam bridge deck waterproof construction method which is characterized by comprising the following steps of wetting bridge deck holes and the periphery by water and punching hole openings; the method comprises the steps of inserting a leakage-proof plug into a hole, smearing an adhesive to firmly adhere the leakage-proof plug to the wall of the hole, pouring high-strength waterproof mortar into the hole after the adhesive is solidified to enable the height of the mortar to be flush with the opening of the hole, sprinkling water for maintenance after the mortar reaches a certain strength, taking the center of the hole as the center of a circle, forming a first layer of waterproof paint above the hole Tu Shua, and spraying a second layer of waterproof paint on the bridge floor comprehensively after the construction of all the waterproof paint of the opening of the hole is completed, so that the bridge floor waterproof construction of the section beam is completed. The application adopts a plurality of waterproof arrangements, can effectively improve the waterproof construction quality of the reserved holes of the bridge deck of the segmental beam, and can repair and leak-stop the leakage points, thereby reducing the risk of the leakage of the accumulated water of the bridge deck into the box chamber through the holes.

Inventors

  • WU DI
  • GONG JUNSONG
  • WANG CHUNYAN
  • HU WEI
  • XIE CHAOQUN

Assignees

  • 中国二十冶集团有限公司

Dates

Publication Date
20260508
Application Date
20260311

Claims (10)

  1. 1. The segment beam bridge deck waterproof construction method is characterized by comprising the following steps of: Wetting bridge deck holes and the periphery by water, and grinding hole openings, wherein leakage-proof plugs are inserted into the holes and firmly fixed with the inner walls of the holes; Filling high-strength waterproof mortar into the holes, and sprinkling water for maintenance; After the waterproof mortar meets the strength requirement, taking the center of the hole as the center of the circle, and forming a first layer of waterproof paint above the hole Tu Shua; And after the construction of the waterproof coating of all the hole openings is completed, spraying a second layer of waterproof coating on the bridge deck comprehensively to complete the construction of the segmental beam bridge deck.
  2. 2. The segmental beam deck waterproof construction method according to claim 1, wherein the Kong Dongkou is polished in an inverted cone shape, and the cone angle is within a certain range.
  3. 3. The method for constructing a bridge deck according to claim 1, further comprising cleaning said hole openings and said sundries in said holes when polishing the hole openings.
  4. 4. The method for constructing a bridge deck according to claim 1, wherein the leak-proof plug is inserted into the hole from below and is located at the bottom of the hole.
  5. 5. The method for constructing a bridge deck of a segmental beam according to claim 4, wherein said leakage preventing plugs are cured and connected to the inner walls of said holes by applying an adhesive.
  6. 6. The segmental beam deck waterproof construction method according to claim 1, wherein the leak-proof plug is cylindrical.
  7. 7. The segmental beam deck waterproof construction method according to claim 6, wherein the diameter of the leak-proof plug is smaller than the inner diameter of the hole by 2-4mm.
  8. 8. The segmental beam deck waterproof construction method according to claim 7, wherein the leakage preventing plugs have a height in the range of 30 to 50 mm.
  9. 9. The method for constructing a bridge deck of a segmental beam according to claim 1, wherein when high-strength waterproof mortar is poured into the hole, the waterproof mortar is flush with the hole opening.
  10. 10. The segmental beam deck waterproof construction method according to claim 1, wherein the diameter of the first layer waterproof paint is 4-5mm larger than the diameter of the hole opening.

Description

Waterproof construction method for segmental beam bridge deck Technical Field The invention relates to the field of building construction, in particular to a waterproof construction method for a segmental girder bridge face. Background Due to the construction process characteristics of factory prefabrication and field assembly of the segmental precast concrete box girder, the concrete pouring square quantity and the formwork support erection quantity of the bridge construction site can be effectively reduced, so that noise pollution is reduced, labor cost is reduced, and construction progress is accelerated. However, because operations such as hoisting and temporary consolidation are required in the process of prefabricating and installing the segmental beam, a large number of hoisting holes and temporary fixing holes are reserved on the top plate and the bottom plate of the segmental beam, and higher requirements are put forward for bridge deck waterproofing. Meanwhile, in order to reduce the weight, the segmental beam bridge is not provided with a concrete leveling layer generally, but a waterproof layer and an asphalt layer are directly paved on a top plate, the construction quality of the waterproof layer directly influences the indoor environment of the box, and further the durability of the segmental beam is influenced. Disclosure of Invention In order to solve the problems, the invention provides a segmental beam bridge deck waterproof construction method which can improve the construction quality of segmental beam bridge deck waterproofing, particularly strengthen the waterproof effect of reserved holes of a bridge roof and reduce the risk of seepage of bridge deck ponding into a box chamber through the holes. The application provides a waterproof construction method of a segmental beam bridge deck, which is characterized by comprising the following steps of: Wetting bridge deck holes and the periphery by water, and grinding hole openings, wherein leakage-proof plugs are inserted into the holes and firmly fixed with the inner walls of the holes; Filling high-strength waterproof mortar into the holes, and sprinkling water for maintenance; after the waterproof mortar meets the strength requirement, taking the center of the hole as the center of the circle, and forming a first layer of waterproof paint above the hole Tu Shua; And after the construction of the waterproof coating of all the hole openings is completed, spraying a second layer of waterproof coating on the bridge deck comprehensively to complete the construction of the segmental beam bridge deck. Further, the Kong Dongkou is polished to be an inverted cone, and the cone angle is within a certain range. Further, when the hole opening is polished, the method further comprises the step of cleaning the hole opening and sundries in the hole. Further, the leakage-proof plug is inserted into the hole from below and is positioned at the bottom of the hole. Further, the leakage-proof plug and the inner wall of the hole are solidified and connected by smearing adhesive. Further, the leakage preventing plug is cylindrical. Further, the diameter of the leakage-proof plug is smaller than the inner diameter of the hole by 2-4mm. Further, the leakage preventing plug has a certain height in the range of 30-50 mm. Further, when high-strength waterproof mortar is poured into the hole, the height of the waterproof mortar is flush with the hole opening. Further, the diameter of the first layer of waterproof coating is 4-5mm larger than the diameter of the hole opening. The invention has the advantages that the waterproof construction quality of the reserved holes of the segmental beam bridge deck can be effectively improved by adopting the multi-channel waterproof arrangement, meanwhile, the conical mortar column bodies in the holes can effectively bear the vehicle load transmitted by the asphalt layer of the bridge deck, so that the sinking situation of the hole openings is avoided, in addition, if leakage occurs at the holes in the later operation process, the rubber plugs at the bottoms can be removed, the leakage points can be repaired again and plugged, and the situation of breaking the asphalt layer of the bridge deck to plug is avoided. Drawings In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic flow chart of a method for constructing a water-proof bridge deck of a segmental beam according to an embodiment of the application; fig. 2 is a schematic structural diagram of a method for constructing a bridge deck of a seg