A main anchoring casting positioning template and method for gas shield dam installation project

Abstract

The present invention discloses a main anchor casting positioning template and method for the installation project of an air shield dam, and belongs to the technical field of water-blocking water conservancy facility construction. It includes a positioning plate, on which positioning holes are provided; a front baffle, on which two rows of parallel exhaust holes and root embedded positioning holes are provided, each row of which is alternately distributed; a rear baffle, on which a row of alternately distributed exhaust holes and wedge positioning holes are provided; a side baffle, on which connecting holes are provided; and a rib plate, on which a hoisting hole is provided. The integral template is made of metal material, and is set together with the main anchor and the steel cage in the installation project. The main anchor foundation is cast with concrete at one time, and the concrete is removed after it has strength. It ensures the accuracy of the main anchor installation, meets the harsh and complex requirements of the main anchor positioning construction and the air shield dam installation, and solves the human factors and labor intensity. The present invention changes the main anchor positioning and construction method, is easy to operate, the template can be recycled, saves engineering costs, and has good air shield dam installation quality.

Description

Technical Field

[0001] The invention relates to a main anchoring casting positioning template and method for an air shield dam installation project, and specifically belongs to the technical field of water-blocking water conservancy facility construction. Background Art

[0002] Dams are important facilities of modern water conservancy, which have important influence and benefits on the national economy and people's livelihood. From earth dams, concrete dams, steel dams (gates), rubber dams to today's air shield dams. The air shield dam inherits the essence of traditional movable dams and overcomes the bottleneck problems of traditional movable dams. It has the characteristics of simple structure, simple and fast construction, installation, use and maintenance; outstanding flood control and flood crossing capabilities, safe and reliable operation; continuous control of water height and operation status; stronger pollution cleaning and silt removal capabilities; higher water retaining and water passing capabilities; short filling and discharge time, simple operation and management; ultra-long service life, high comprehensive benefits; strong earthquake resistance, high adaptability to foundations; good landscape effects and ecological and environmental friendliness.

[0003] The main anchor of the air shield dam uses the main anchor component to fix the rubber air bag and the steel shield plate on the riverbed through the pressure plate to form a sealed bag. It is the key factor in whether the air shield dam can play a stable water retaining role.

[0004] Generally, the main anchor structure is divided into two types: when the water retaining height is low (such as below 2.5 meters), the air bag perforated form is adopted; when the water retaining height is high, the air bag non-perforated form is adopted.

[0005] In the construction of the main anchor project, the pre-embedded bolts of the main anchor are a very important part of the whole project. The quality control of the pre-embedded bolts construction directly affects the success or failure of the gas shield dam installation, and the choice of its construction method will have a great impact on the project quality and construction period.

[0006] When pre-embedded anchor bolts are generally used in engineering, bolt pressure plates are used to fix the anchor bolt positions, and wooden supports are used to fix the bolt pressure plates in the anchor grooves. A full-length steel bar is used to weld the pre-embedded parts together according to the designed spacing, and then the anchor groove concrete is poured. Concrete pouring is carried out in two phases. After the second phase of concrete pouring, the bolt pressure plate anchor is installed. Rubber sheets are used to level the bolts before installation. The wooden core or steel pipe that is rolled in when the nut is installed is used to press the shaft.

[0007] There are various drawbacks in the actual application process:

[0008] 1) During on-site construction, accurate bolt positioning is difficult to ensure;

[0009] 2) After the air shield dam is installed, the air bag often leaks or slowly releases air;

[0010] 3) Concrete pouring is required in two phases, the construction is extremely cumbersome and complicated, the construction period is long, the construction workers' skills and construction experience are high, and the labor intensity is high;

[0011] 4) The upper pressure plate of the non-perforated anchoring form of the air shield dam with higher water head has a complex shape, and the main anchor bolts and main anchor fixing position construction and the installation of the air shield dam are more demanding and complex, with high requirements, great influence of human factors and high labor intensity.

[0012] In our early projects, we tried to use foam materials as positioning casting formwork, but they were often damaged during the actual construction process, and the formwork had a complex shape, making it difficult to make with foam materials. Summary of the invention

[0013] Aiming at the above problems existing in the main anchor casting positioning method and technology of the existing gas shield dam installation project.

[0014] The purpose of the present invention is to provide a main anchor casting positioning template and method for an air shield dam installation project, which ensures the accuracy of the main anchor installation, meets the harsh and complex requirements of the main anchor positioning construction and air shield dam installation, and solves the human factors and labor intensity.

[0015] The invention changes the main anchor fixing position and construction method, is easy to operate, has high construction efficiency, and the template can be recycled, thus saving engineering costs and improving the installation quality of the air shield dam.

[0016] The objective of the present invention is achieved through the following technical solutions:

[0017] A main anchor casting positioning template and method for an air shield dam installation project, comprising a main anchor bolt positioning plate, on which positioning holes are provided; a front baffle, on which two rows of parallel exhaust holes and root embedded positioning holes are provided, each row of which is alternately distributed; a rear baffle, on which a row of alternately distributed exhaust holes and wedge embedded positioning holes are provided; a side baffle, on which connection holes are provided; and a rib plate, on which hoisting holes are provided. The template is made of integral metal material. In the air shield dam installation project, it is set together with the main anchor and the steel cage, and the main anchor foundation is cast with concrete at one time. The template is removed after the concrete has a certain strength. It ensures the accuracy of the main anchor installation, meets the demanding and complex requirements of the main anchor positioning construction and the air shield dam installation, and solves the human factors and labor intensity.

[0018] The main anchor bolt positioning plate is provided with equidistant positioning holes, and the positioning holes at both ends of two adjacent main anchor casting positioning templates are also equidistant.

[0019] The front baffle is provided with two parallel rows of exhaust holes and root embedded part positioning holes which are alternately distributed in each row. The root embedded part positioning holes at both ends of the front baffles of two adjacent main anchor casting positioning templates are also equidistant.

[0020] The rear baffle is provided with a row of alternately distributed exhaust holes and wedge embedded part positioning holes, and the wedge embedded part positioning holes at both ends of the rear baffles of two adjacent main anchor casting positioning templates are also equidistant.

[0021] The side baffle is provided with two connection holes for connecting adjacent templates.

[0022] The ribs are provided with three ribs on each template, and two hoisting holes are respectively provided on the first and third ribs, which are symmetrically arranged on both sides of the center of mass of the template.

[0023] The main anchor casting positioning template construction method of the air shield dam installation project of the present invention is simple, light and accurate, and is set together with the main anchor (root embedded parts, wedge embedded parts, bolt rows and brackets) and the steel cage, and the main anchor foundation is cast with concrete at one time, which saves engineering costs and has good installation quality of the air shield dam.

[0024] The main anchoring casting positioning template of the present invention has a simple manufacturing process and can be manufactured only through metal cutting, drilling, welding and surface anti-corrosion treatment, and the raw materials are easily available and the cost is low.

[0025] The advantages and effects of the present invention are:

[0026] 1) The main anchor casting positioning template for the air shield dam installation project of the present invention has a simple structure, light weight, beautiful appearance, simple installation, disassembly, maintenance, transportation and storage, strong practicality, and accurate main anchor casting positioning, which meets the stringent and complex requirements of the main anchor bolt and main anchor fixing construction and the air shield dam installation.

[0027] 2) The construction method of the present invention is simple, light and accurate, and the concrete is poured in one time, which improves the efficiency, saves the engineering cost, and the air shield dam has good installation quality.

[0028] 3) The manufacturing process of the present invention is simple, the raw materials are easily available, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of the main anchoring casting positioning template structure of the gas shield dam installation project of the present invention;

[0030] Figure 2 A top view of the main anchoring casting positioning template for the gas shield dam installation project of the present invention;

[0031] Figure 3 It is a three-dimensional schematic diagram of the installation of the main anchoring casting positioning template for the gas shield dam installation project of the present invention;

[0032] Figure 4 This is a left view of the installation of the main anchor casting positioning template for the air shield dam installation project of the present invention.

[0033] Figures 1-2 Middle marking: 1- template positioning plate / bottom plate, 2- template positioning hole, 3- front baffle plate, 4- exhaust hole, 5- root embedded part positioning hole, 6- rear baffle plate, 7- wedge embedded part positioning hole, 8- side baffle plate, 9- connection hole, 10- rib plate, 11- lifting hole.

[0034] Figures 3-4 Middle marking: Y1-main anchor casting positioning template, Y2-root embedded parts, Y3-wedge embedded parts, Y4-main anchor bolt row, Y5-bolt row fixing bracket, Y6-embedded part fixing bolts, Y7-shear nails, Y8-upper (temporary) and lower nuts for fixing the main anchor bolt row bolts. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 The present invention is further described in detail with examples.

[0036] Obviously, the described embodiments are only representative embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figures 1 to 4 The orientation or position relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the dimensions are all calculated from the center line.

[0038] Example 1

[0039] In a certain province, a 3.8-meter-high and 410-meter-long gas shield dam was built. This project played a very good role and became a high-quality project.

[0040] The main anchoring casting positioning template and method of the present invention are adopted to solve the anchoring foundation problem.

[0041] The main anchor casting positioning template is made of 304 stainless steel.

[0042] like Figures 1-2As shown, a main anchor casting positioning template for an air shield dam installation project includes a main anchor bolt positioning plate / bottom plate 1, on which a template positioning hole 2 is provided; a front baffle plate 3, on which two rows of parallel exhaust holes 4 and root embedded part positioning holes 5 are provided, each row of which is alternately distributed; a rear baffle plate 6, on which a row of alternately distributed exhaust holes 4 and wedge embedded part positioning holes 7 are provided; a side baffle plate 8, on which side baffle plate connecting holes 9 are provided; and a rib plate 10, on which a hoisting hole 11 is provided.

[0043] The main anchor bolt positioning template Y1 in this embodiment has a total length of 2998 mm. Each positioning plate is provided with 11 Φ52 positioning holes 2 equidistant by 250 mm. The positioning holes 2 at both ends of the two adjacent main anchor casting positioning templates Y1 are also equidistant, that is, the positioning holes 2 at both ends of the template are 124 mm away from the edge of the side baffle plate 8, and the thickness of the side baffle plate 8 is 4 mm.

[0044] The front baffle plate 3 is provided with two rows of parallel (parallel distance 99.3mm) vent holes 4 and root embedded parts positioning holes 5, which are alternately distributed in each row. The root embedded parts positioning holes 5 at both ends of the front baffle plates 3 of the two adjacent main anchor casting positioning templates Y1 are also equidistant by 375mm. The upper row of holes is Φ13.5mm, and the lower row is strip holes Φ13.5mm + hole spacing 14.65mm.

[0045] The rear baffle plate 6 is provided with a row of alternately distributed exhaust holes 4 of Φ13.5 mm and wedge positioning holes 7 of Φ13.5 mm. The wedge embedded positioning holes 7 at both ends of the rear baffle plates (6) of the two adjacent main anchor casting positioning templates are also equidistantly spaced at 375 mm.

[0046] The side baffle 8 is provided with two connection holes 9 of Φ16 mm for connecting the adjacent templates Y1.

[0047] Ribs 10, each template Y1 is provided with three 4mm thick ribs, and the first and third ribs are each provided with two lifting holes 11 of Φ50mm11, which are symmetrically arranged on both sides of the template's center of mass.

[0048] The manufacturing method of the main anchor casting positioning template of the gas shield dam installation project of this embodiment includes the following steps:

[0049] 1) Cut and drill the 304 stainless steel plate according to the shape and size of the designed template parts;

[0050] 2) Fully weld the template components according to the design;

[0051] 3) After the welded formwork is treated with shot blasting and slag removal, it is immediately galvanized and coated for anti-corrosion. The contact surface of the metal integral formwork with the concrete does not require surface treatment and anti-corrosion.

[0052] The construction method of the main anchoring casting positioning template Y1 of the gas shield dam installation project of this embodiment includes the following steps:

[0053] 1) Install the wedge embedded part Y3 on the rear baffle 6 through the wedge embedded part positioning hole 7 with bolts Y6, and install the root embedded part Y2 on the front baffle 3 through the root embedded part positioning hole 5 with bolts Y6;

[0054] 2) After the main anchor casting positioning template Y1 is assembled with the wedge embedded part Y3 and the root embedded part Y2, the assembly is installed on the main anchor bolt row Y4 through the template positioning hole 2 and fixed with the main anchor bolt Y8;

[0055] 3) The main anchor casting positioning template Y1 is fixed to the root embedded part Y2 and the wedge embedded part Y3 by welding with channel steel through the fixing bracket Y5 of the main anchor bolt row Y4;

[0056] 4) Check and verify the elevation, horizontality, verticality, spacing, and reference point size of the main anchor casting positioning template Y1; after the verification is qualified, further weld it firmly;

[0057] 5) According to the shape of the main anchor casting positioning template Y1, weave and tie the steel cage, and pour concrete after passing the inspection;

[0058] 6) When the concrete strength reaches 80% of the design value, remove the upper nut Y8 used to position the anchor bolt row Y4 bolts and the template Y1, as well as the nut for positioning and fixing the wedge embedded part Y3 on the bolt Y6 on the rear baffle 6, and the nut for positioning and fixing the root embedded part Y2 on the bolt Y6 on the front baffle 3;

[0059] 7) Try to remove the main anchor casting positioning formwork Y1, verify that the concrete strength meets the conditions for demolding, then remove the formwork, clean the surface concrete residue of the removed main anchor casting positioning formwork Y1, and continue to use it after repair.

[0060] In the construction method of the main anchoring casting positioning template Y1 of the air shield dam installation project of this embodiment, the shear studs Y7 involved are respectively used to position and fix the root embedded parts Y2 and the wedge embedded parts Y3.

[0061] Example 2

[0062] An air shield dam with a water retaining capacity of 3.0 meters and a length of 40 meters adopts the main anchor casting positioning template and method of the present invention.

[0063] The main anchor casting positioning template is made of Q355B carbon steel.

[0064] Except for the change in the designed size of the main anchor casting positioning template, the rest is the same as Example 1.

[0065] The invention changes the main anchoring position and construction method of the air shield dam, and is easy to position, light and accurate, and simple to construct. The template is set together with the root embedded parts, the wedge embedded parts, the anchor row and the bracket and the steel cage, and is poured with concrete at one time. The construction efficiency is high, the template can be recycled, the engineering cost is saved, and the air shield dam has good installation quality.

[0066] The present invention has a simple production process and good production stability; the positioning template produced can meet the simple and accurate positioning of the anchor piece and is particularly suitable for the construction of dams.

[0067] The invention forms a new economic growth point, serves as a reference for the development of the application of relevant theories and materials of positioning templates and air shield dams, and has important social and economic benefits.

[0068] The above embodiments are preferred representative implementations of the present invention, but the present invention is not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the essence and principles of the present invention are equivalent replacement schemes and should be included in the protection scope of the present invention.

Claims

1. A main anchoring casting positioning template for an air shield dam installation project, characterized in that: The invention comprises a positioning plate (1) on which a template positioning hole (2) is provided; a front baffle (3) on which two rows of parallel exhaust holes (4) and root embedded parts positioning holes (5) are provided, each row being alternately distributed; a rear baffle (6) on which a row of alternately distributed exhaust holes (4) and wedge positioning holes (7) are provided; a side baffle (8) on which a side baffle connecting hole (9) is provided; and a rib plate (10) on which a hoisting hole (11) is provided. The template is made of metal material. In the installation project of the air shield dam, the template is assembled with the wedge embedded parts, the root embedded parts, the bolt row and the bracket, and then installed together with the steel cage. The main anchor foundation is poured with concrete at one time. After the foundation concrete has strength, the template is removed.

2. A main anchoring casting positioning template for an air shield dam installation project according to claim 1, characterized in that: The metal materials include: Q355B carbon steel and 304 stainless steel, which are made into a template through a welding process.

3. A main anchoring casting positioning template for an air shield dam installation project according to claim 2, characterized in that: Q355B carbon steel is treated with anti-corrosion, that is, after the metal integral formwork is completed, it needs shot blasting, slag removal surface treatment, galvanizing and coating for anti-corrosion. The contact surface of the metal integral formwork with the concrete does not require surface treatment and anti-corrosion.

4. A main anchoring casting positioning template for an air shield dam installation project according to claim 1, characterized in that: Each template has three ribs, and the first and third ribs are each provided with two lifting holes (11) which are symmetrically arranged on both sides of the center of mass of the template.

5. A main anchoring casting positioning template for an air shield dam installation project according to claim 1, characterized in that: The side baffle has two connection holes (9) for connecting adjacent templates.

6. The construction method of the main anchoring casting positioning template for the gas shield dam installation project according to any one of claims 1 to 5 is characterized in that: The following steps are involved: Step 1: Install the wedge embedded part (Y3) on the rear baffle (6) through the positioning hole (7) of the wedge embedded part (Y3) with a bolt (Y6), and install the root embedded part (Y2) on the front baffle (3) through the positioning hole (5) of the root embedded part with a bolt (Y6); Step 2: After the main anchor casting positioning template (Y1) is assembled with the wedge embedded parts (Y3) and the root embedded parts (Y2), the assembly of the main anchor casting positioning template (Y1) and the wedge embedded parts (Y3) and the root embedded parts (Y2) is installed on the main anchor bolt row (Y4) through the template positioning hole (2), and the main anchor bolt (Y6) fixes it; Step 3: The positioning template (Y1) is fixed to the root embedded part (Y2) and the wedge embedded part (Y3) by welding with channel steel through the fixing bracket (Y5) of the main anchor bolt row; Step 4: Check and verify the elevation, horizontality, verticality, spacing, and reference point size of the main anchor casting positioning template (Y1); after the verification is qualified, further weld it firmly; Step 5: Weave and tie the steel cage according to the shape of the main anchor casting positioning template (Y1), and pour concrete after passing the inspection; Step 6: When the concrete strength reaches 80% of the design value, remove the nut (Y8) of the anchor bolt, tentatively remove the main anchor casting positioning formwork, verify that the concrete strength meets the demolding conditions, and then remove the formwork. Clean the surface concrete residue of the removed main anchor casting positioning formwork and continue to use it after repair.

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