Novel reinforced concrete prefabricated pipe gallery construction method
By prefabricating reinforced concrete pipe corridor components in the prefabricated site, lifting and fixing them on site, combined with the use of high-strength, shrink-free concrete, the problems of high costs, long construction periods and difficult to guarantee safety and quality in the existing construction methods are solved, and construction is achieved Significant improvements in progress and quality.
Patent Information
- Application Number
- CN202411412256.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-02-07
AI Technical Summary
The existing reinforced concrete pipe corridor construction methods have problems such as high costs, long construction periods, and difficult to guarantee safety and quality. In particular, the wet connection of grout sleeves requires scaffolding support, which is low in the early stage and has the potential for untight grouting.
A new method of construction of reinforced concrete prefabricated pipe corridors includes dismantling and prefabricating concrete beams and columns in the prefabricated yard. After the cup base is completed, prefabricated columns and beams will be transported and hoisted, and temporary oblique braces and formwork will be installed. Fixture, pour high-strength non-shrinkage concrete to form an integral transverse frame.
This method can reduce construction costs, speed up construction period, improve construction safety and quality, significantly improve the on-site image, improve the construction safety of workers, and at least double the construction schedule compared with the cast-in-place construction plan, and increase the construction cost by about 12% to 14%.
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Figure CN119392937A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of reinforced concrete prefabricated pipe corridors for industrial and civil structures, and in particular to a new reinforced concrete prefabricated pipe corridor construction method. Background Art
[0002] Reinforced concrete pipe corridors were previously constructed using cast-in-place methods, with scaffolding set up on site, steel bars tied, formwork supported, and concrete poured. With the promotion of prefabrication technology, prefabricated assembled pipe corridors have begun to appear in the past decade. One method uses grouting sleeves for wet connection between prefabricated components. Since the grouting sleeve connection has no strength in the initial stage, necessary scaffolding support is required for the prefabricated components; another method uses dry connection between prefabricated components such as Peik bolts. The bolts can bear force after tightening, and no scaffolding support is required.
[0003] A comprehensive comparison of these three construction schemes shows that each has its own advantages and disadvantages. The cast-in-place scheme of reinforced concrete pipe gallery is the most economical, but the construction period is long, and it is not easy to guarantee safety and quality, and it is difficult to repair problems; the cost of wet connection of grouting sleeve is relatively low, but it requires scaffolding support, the early strength is low, and there is a hidden danger of loose grouting of the sleeve; the cost of dry connection of Peik bolts is relatively high, 30% to 40% higher than the cost of cast-in-place, but it does not require scaffolding support. After installation, you only need to grout the bolts and seal them, which is convenient for construction. For this reason, based on the defects of the above technologies, we proposed a new reinforced concrete prefabricated pipe gallery construction method that can solve the above problems. Summary of the invention
[0004] The purpose of the present invention is to provide a new reinforced concrete prefabricated pipe gallery construction method to solve the following technical problems:
[0005] It can reduce costs, speed up construction schedule, and meet safety and quality requirements.
[0006] The purpose of the present invention can be achieved through the following technical solutions:
[0007] A new reinforced concrete prefabricated pipe gallery construction method comprises the following steps;
[0008] Step 1: Split the concrete beams and columns of the reinforced concrete pipe gallery according to the construction drawings and prefabricate them in the prefabrication yard;
[0009] Step 2: After the construction of the cup-mouth foundation is completed, the corresponding prefabricated columns and prefabricated beams are transported to the side of the foundation. The prefabricated columns are first hoisted and fixed in the cup-mouth foundation, and temporary diagonal braces are installed. Then, the prefabricated beams are installed and fixed layer by layer using a lift or a crank truck, and the formwork fixtures are installed at the beam-column connection nodes;
[0010] Step 3: After completion, pour high-strength grade non-shrinkage concrete to form a lateral frame with no weakening of the integrity.
[0011] As a further solution of the present invention: the pipeline corridor construction method includes four modules: a foundation fixing module, a prefabricated column supporting module, a beam-column connecting module and a beam-column hoisting module.
[0012] As a further solution of the present invention: the basic fixing module is manufactured as follows:
[0013] After the prefabricated columns are hoisted into place, a column elevation leveling device is first installed on the bottom hanger, which serves to initially fix the prefabricated columns to the cup-mouth foundation. After a certain number of prefabricated columns are installed, the cup-mouth foundation can be initially grouted and the top surface of the foundation can be polished flat.
[0014] As a further solution of the present invention: the manufacturing of the prefabricated column support module is as follows:
[0015] After the precast columns are fixed in the cup foundation, start installing temporary supports for the columns, put the lateral support base plates in place, and then insert the base plate anchor nails to lock the base plate.
[0016] As a further solution of the present invention: the beam-column connection module is manufactured as follows:
[0017] After all the prefabricated columns are fixed and the lateral braces are installed, the prefabricated beams can be hoisted upwards from the lowest layer. The prefabricated beams are placed on the supporting I-beams, and the longitudinal reinforcements are connected to the frame beams on the prefabricated columns one by one using sleeve-type mechanical connections. After the prefabricated beams are hoisted in place, workers are sent to the connection nodes using a scissor lift or a crank lift. The threaded sleeves and bolt barrels are screwed on one by one, and then all the steel bar connection bolt sleeves are screwed until they cannot be screwed. Then the beam stirrups are installed, and then the U-shaped hoops and templates are installed at the connection nodes. Then, the embedded steel plates on the top of the beams are installed according to the design requirements.
[0018] As a further solution of the present invention: the beam-column hoisting module is manufactured as follows:
[0019] The round steel lifting rods at the top of the columns are hoisted with an automatic unhooking device, and the prefabricated beams are hoisted directly with steel pipe lifting beams and slings.
[0020] Beneficial effects of the present invention:
[0021] (1) The construction method of the present invention is simple, easy to operate, and has low requirements on construction technology;
[0022] (2) The components of the present invention are manufactured in a prefabrication site, and the construction quality is guaranteed;
[0023] (3) The construction site image of the present invention will be significantly better than that of the cast-in-place construction scheme, and the workers will be safer during construction;
[0024] (4) The on-site construction progress of the present invention is at least twice as fast as that of the cast-in-place construction scheme;
[0025] (5) The construction cost of the present invention is increased by about 12% to 14% compared with the cast-in-place construction solution. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The present invention will be further described below in conjunction with the accompanying drawings.
[0028] Figure 1 It is a structural schematic diagram of the pipe gallery of the present invention in which beams and columns are prefabricated in pieces and assembled one by one;
[0029] Figure 2 It is the specific construction flow chart of precast concrete pipe gallery;
[0030] Figure 3 yes Figure 2 The schematic diagram of the fixed foundation at A in the middle;
[0031] Figure 4 It is a schematic diagram of the precast column supported elevation;
[0032] Figure 5 It is a schematic diagram of the installation of precast beams;
[0033] Figure 6 It is a schematic diagram of the longitudinal reinforcement sleeve type mechanical connection;
[0034] Figure 7 It is a schematic diagram of the fixing of the U-shaped hoop and the template;
[0035] Figure 8 It is a schematic diagram of the overall structure of the fixed equipment;
[0036] Fig. 9 for Figure 8 The enlarged schematic diagram of point B in the middle;
[0037] Fig.10 for Figure 8 The enlarged schematic diagram of the center C;
[0038] Fig.11 for Figure 8 The enlarged schematic diagram of point D in the middle;
[0039] Fig.12 It is a schematic diagram of the structure of the fixed equipment from an upward perspective;
[0040] Fig.13 for Fig.12 Enlarged schematic diagram of point E in the middle.
[0041] In the figure: 1. Precast column; 2. Precast beam; 3. Column clamp; 4. Lateral support rod; 5. Anchor nail; 6. Support base plate; 7. Column elevation leveling device; 8. Round steel lifting rod; 9. Hardwood wedge; 10. Secondary grouting; 11. Tension bolt; 12. U-shaped clamp; 13. Formwork, 1-0, first base plate; 2-0, second base plate; 3-0, stabilizing clamp; 4-0, adjusting assembly; 4-1, first electric telescopic rod; 4-2, teeth; 4-3, slide; 4-4, reciprocating screw ; 4-5, slider; 4-6, support plate; 4-7, motor; 5-0, limit assembly; 5-1, mounting groove; 5-2, second electric telescopic rod; 5-3, baffle; 5-4, mounting frame; 5-5, limit strip; 5-6, limit groove; 6-0, clamping assembly; 6-1, clamping groove; 6-2, third electric telescopic rod; 6-3, pulley; 6-4, guide plate; 6-5, contraction groove; 6-6, clamping plate; 6-7, protective cover; 6-8, telescopic rod; 6-9, bolt. DETAILED DESCRIPTION
[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.
[0043] Embodiment 1
[0044] See also Figure 1 - Figure 7 As shown, the present invention is a new reinforced concrete prefabricated pipe gallery construction method, comprising the following steps: the reinforced concrete pipe gallery is generally a reinforced concrete frame in the horizontal direction, a steel longitudinal beam hingedly connected to the concrete frame is arranged in the longitudinal direction, longitudinal column supports are arranged at intervals of about 60m, the arrangement of the longitudinal supports is adjusted in combination with the position of the pipeline fixing bracket, and a cup-shaped short column is used to connect with the foundation. For reinforced concrete pipe galleries with large spans and many layers, hoisting calculations are performed on the concrete beams and columns hoisted separately, and the bearing capacity of the longitudinal unsupported section of the concrete column is also calculated as a cantilever column. Finally, envelope reinforcement is performed in combination with the overall calculation results to ensure safety. The construction scheme of the present invention can be adopted (such as Figure 1 The specific construction process is as follows Figure 2 As shown;
[0045] Step 1: Split the concrete beams and columns of the reinforced concrete pipe gallery according to the construction drawings and prefabricate them in the prefabrication yard;
[0046] Step 2: After the construction of the cup-mouth foundation is completed, the corresponding prefabricated columns 1 and prefabricated beams 2 are transported to the side of the foundation. The prefabricated columns 1 are first hoisted and fixed in the cup-mouth foundation, and temporary diagonal braces are installed. Then, the prefabricated beams 2 are installed and fixed layer by layer using a lift or a crank truck, and the template 13 fixture is installed at the beam-column connection node;
[0047] Step 3: After completion, pour high-strength grade non-shrinkage concrete to form a lateral frame with no weakening of the integrity.
[0048] The present invention consists of four parts: a foundation fixing module, a prefabricated column supporting module, a beam-column connecting module and a beam-column hoisting module.
[0049] The production of the basic fixed module is as follows:
[0050] After the prefabricated column 1 is hoisted into place, a column elevation leveling device 7 is first installed on the bottom hanging rod. After the column is hoisted into place, the hoisting device is removed, the hoisting rod is retained, and the leveling device is installed in the reserved holes on both sides. It consists of a M30 bolt that is plugged and welded on a 30 thick steel plate (150x150x30), and a nut is installed on the bolt. After the device is installed on both sides of the hoisting rod, the nuts on the bolts on both sides can be fine-tuned to achieve the change of the column elevation, so as to achieve precise leveling. Then, two hardwood wedges 9 are symmetrically installed on each side of the gap between the cup-mouth foundation and the prefabricated column 1. The preliminary alignment of the prefabricated column 1 is achieved by adjusting the insertion degree of the wedges. The precise leveling of the installation elevation of the prefabricated column 1 is achieved by twisting the leveling nuts. Then, the hardwood wedges 9 are symmetrically knocked into the two opposite sides to achieve the precise alignment of the prefabricated column 1, and play the role of initially fixing the prefabricated column 1 to the cup-mouth foundation. (such as Figure 3 As shown in the figure, after a certain number of prefabricated columns 1 are installed, the cup-mouth foundation can be initially grouted. After the strength of the grouting material is not less than 70%, the hardwood wedge 9 is taken out, the hole is sealed by secondary grouting 10, and the top surface of the foundation is polished and smooth.
[0051] The production of prefabricated column support modules is as follows:
[0052] After the prefabricated column 1 is fixed in the cup foundation with hardwood wedges 9, the temporary support of the column is installed. The column clamp 3 is installed at a height of about 8m from the ground (installed before the column is hoisted). The column clamp 3 is prefabricated with 14a channel steel and fixed with M16 ordinary bolts. A connecting plate is set in the center of each of the four sides of the column clamp 3 to connect the upper end of the lateral support rod 4 (installed before the column is hoisted and fixed to the column with ropes). The foundation of the lateral support rod 4 is a 0.8x0.8x0.03m steel plate. The connecting plate is welded at the center of the top of the plate and connected to the lower end of the lateral support rod 4. The lateral support rod 4 of the prefabricated column 1 is made of φ159x4 steel pipe with a length of 8.5m, (such as Figure 4(As shown in the figure) put the lateral support base plate 6 into the appropriate position, connect it to the lateral support rod 4 with M30 bolts, use a hammer to gently knock the side of the base plate towards the column, so that the lateral support rod 4, the column clamp 3 and the support base plate 6 are pressed against each other, and then insert the anchor nail 5 to lock the support base plate 6. Two or three lateral support rods 4 can be installed as needed to ensure the stability of the column.
[0053] The production of the beam-column connection module is as follows:
[0054] After all the precast columns 1 are fixed and the lateral braces are installed, the precast beams 2 can be hoisted upwards from the bottom layer. A frame beam about 1m long must be made on the precast column 1, and an I16 I-beam must be embedded in the center. The precast beam 2 is placed on the I-beam, and the longitudinal reinforcement is connected one by one with the longitudinal reinforcement of the frame beam on the precast column 1 using a sleeve-type mechanical connection. When the components are prefabricated, all reserved exposed steel bar ends should be rounded and covered with internal threaded sleeves or external threaded bolt barrels. The steel bars and sleeves should also be checked and corrected before hoisting to ensure that the longitudinal steel bars can be accurately butted together when in place, and a gap of 3 to 5 mm should be reserved between the steel bars. (If Figure 5 After the precast beam 2 is hoisted into place, a scissor lift or a boom lift is used to send workers to the connection node, and the reserved steel bars are fine-tuned with an F-type wrench so that the longitudinal steel bars can be aligned one by one. The threaded sleeves and bolt barrels are screwed on one by one, and the horizontal / vertical flatness between the middle section precast beam 2 and the two end precast beams 2 is adjusted to the allowable construction error range through the embedded steel. Then all the steel bar connection bolt sleeves are tightened until they cannot be twisted. (As shown in the figure, the precast beam 2 is hoisted into place, and the workers are sent to the connection node by a scissor lift or a boom lift.) Figure 6 As shown in ), install the beam stirrups (put on the longitudinal reinforcement and fix it before lifting), then install the U-shaped stirrups 12 and the template 13 at the connection node, connect and fix them with the tension bolts 11, (as shown in 7), and pour the connection node with non-shrinkage high-strength grade concrete after tightening, and then install the embedded steel plate on the top of the beam according to the design requirements. When the concrete strength is not less than 75%, use a scissor lift or a crank arm lift to complete the demoulding and the treatment of surface defects of the components.
[0055] The production of beam and column hoisting modules is as follows:
[0056] Taking the 9m-span, 7-story prefabricated pipe gallery as an example, a 150-ton truck crane is used as the main crane, a 50-ton truck crane is used for tail lifting, a 30-meter-long articulated arm lift and a scissor lift are used to install the prefabricated beam 2, and a small backhoe is used to level the site. The hoisting holes of the prefabricated column 1 are set 1m below the top of the column and 1m above the bottom of the column. The length-adjustable steel pipe hoisting beam of φ159x8 and the round steel hoisting rod 8 of φ95 are used to ensure that the prefabricated column 1 can rotate freely in the plane during hoisting and maintain the plumb state when hoisted in place. The prefabricated beam 2 is directly hoisted using the steel pipe hoisting beam plus slings.
[0057] Embodiment 2
[0058] Replace the precast column support modules with fixed equipment, see Figure 8 - Fig.13 As shown, on the basis of the first embodiment, the fixing device includes a first base plate 1-0 and a second base plate 2-0, and the first base plate 1-0 and the second base plate 2-0 are both provided with a clamping assembly 6-0 and an adjusting assembly 4-0. The first base plate 1-0 and the second base plate 2-0 are convenient for stabilizing the limited prefabricated column, and the adjusting assembly 4-0 includes a supporting plate 4-6 fixedly mounted on the first base plate 1-0 and the second base plate 2-0, and a first electric telescopic rod 4-1 is arranged on the supporting plate 4-6, and the first electric telescopic rod 4-1 plays a role in driving the stabilizing hoop 3-0 to move upward, and the other end of the first electric telescopic rod 4-1 is rotatably installed with the stabilizing hoop 3-0, and the stabilizing hoop 3-0 is disassembled and installed by screws, and the stabilizing hoop 3-0 plays a role in stabilizing and supporting the stabilizing prefabricated column;
[0059] The clamping assembly 6-0 includes a clamping groove 6-1 provided on the inner side of the stabilizing hoop 3-0, a third electric telescopic rod 6-2 is fixedly installed on the inner wall of the clamping groove 6-1, a pulley 6-3 is rotatably installed on the other end of the third electric telescopic rod 6-2, the third electric telescopic rod 6-2 drives the pulley 6-3 to clamp and stabilize the prefabricated column, the pulley 6-3 drives the stabilizing hoop 3-0 to slide on the prefabricated column, a contraction groove 6-5 is provided on the side close to the first base plate 1-0 and the second base plate 2-0, a telescopic rod 6-8 is fixedly installed on the inner wall of the contraction groove 6-5, a clamping plate 6-6 is fixedly installed on the other end of the telescopic rod 6-8, and bolts 6-9 are threadedly installed on the first base plate 1-0 and the second base plate 2-0.
[0060] One end of the bolt 6-9 slides through the shrinkage groove 6-5 and is rotatably installed on the clamping plate 6-6. The bolt 6-9 serves to adjust the installation angle of the prefabricated column. A protective cover 6-7 is fixedly installed on the side of the clamping plate 6-6 close to the telescopic rod 6-8. The protective cover 6-7 is slidably installed in the shrinkage groove 6-5. The protective cover 6-7 serves to protect the shrinkage groove 6-5 and try to prevent concrete from entering the shrinkage groove 6-5. A guide plate 6-4 is fixedly installed on the side of the stabilizing hoop 3-0 away from the first base plate 1-0. The guide plate 6-4 serves to guide the installation of the prefabricated column.
[0061] A slide groove 4-3 is provided on the side of the support plate 4-6 close to the stabilizing hoop 3-0, and a reciprocating screw 4-4 is rotatably installed in the slide groove 4-3, and a slider 4-5 is threadedly installed on the reciprocating screw 4-4, and the reciprocating screw 4-4 plays a role in driving the slider 4-5 to slide and adjust. A motor 4-7 is fixedly installed on one end of the support plate 4-6 close to the first base plate 1-0 and the second base plate 2-0, and a bolt is threadedly installed on the end of the support plate 4-6 away from the motor 4-7, and the support plate 4-6 is fixed to the ground by the bolts, and the output end of the motor 4-7 slides through the slide groove 4-3 and is fixedly installed on the reciprocating screw 4-4, and the end of the first electric telescopic rod 4-1 away from the stabilizing hoop 3-0 is rotatably installed on the slider 4-5, and a tooth 4-2 is fixedly installed on the side of the support plate 4-6 away from the slide groove 4-3. There are multiple teeth 4-2, and the teeth 4-2 play a role in increasing the friction between the support plate 4-6 and the ground, which is beneficial to improving the supporting stability of the device.
[0062] In summary, when using the device, firstly, the prefabricated column is hoisted between the first base plate 1-0 and the second base plate 2-0, and then the third electric telescopic rod 6-2 is started to drive the pulley 6-3 to squeeze the prefabricated column, and then the bolt 6-9 is screwed to make the bolt 6-9 slide on the clamping plate 6-6, and the clamping plate 6-6 is squeezed on the prefabricated column, and at the same time, the clamping plate 6-6 drives the protective cover 6-7 and the telescopic rod 6-8 to be pulled out from the contraction groove 6-5, and then the first electric telescopic rod 4-1 is started to make the first electric telescopic rod 4-1 drive the stabilizing hoop 3-0 to slide upward on the prefabricated column, so that the stabilizing hoop 3-0 The pulley 6-3 is driven to move upward on the prefabricated column through the third electric telescopic rod 6-2, and then the motor 4-7 is started to rotate the reciprocating screw 4-4 at the output end of the motor 4-7, and at the same time, the reciprocating screw 4-4 drives the slider 4-5 to slide in the slide groove 4-3, and at the same time, the slider 4-5 assists the first electric telescopic rod 4-1 to adjust the stabilizing hoop 3-0, and then concrete is poured between the first bottom plate 1-0, the second bottom plate 2-0 and the prefabricated column, so as to facilitate the clamping and adjustment of the stabilizing hoop 3-0, and the adjustment of the prefabricated column, which is beneficial to improving the clamping and adjustment ability of the device and the supporting stability of the device.
[0063] The second bottom plate 2-0 is provided with a limit assembly 5-0, which includes a mounting groove 5-1 provided on the second bottom plate 2-0, and a second electric telescopic rod 5-2 is fixedly installed on the inner wall of the mounting groove 5-1, and the second electric telescopic rod 5-2 plays a role in driving the baffle 5-3 to move up and down, and a baffle 5-3 is fixedly installed on the side of the second electric telescopic rod 5-2 close to the stabilizing hoop 3-0, and the baffle 5-3 slides in the mounting groove 5-1 and drives the mounting frame 5-4 to move up and down, and the baffle 5-3 is away from the second bottom plate 2-0. A mounting frame 5-4 is fixedly installed on one side of the base plate 2-0, and the mounting frame 5-4 serves to fasten the first base plate 1-0 and the second base plate 2-0 together. Limiting strips 5-5 are fixedly installed at both ends of the mounting frame 5-4, and limiting grooves 5-6 are provided at corresponding positions on the first base plate 1-0 and the second base plate 2-0. The limiting strips 5-5 are installed in the limiting grooves 5-6 to serve as limiting the mounting frame 5-4, which is beneficial to improving the fastening ability of the mounting frame 5-4 and improving the supporting stability of the device.
[0064] To sum up, when using the device, first retract the second electric telescopic rod 5-2, and at the same time retract the baffle 5-3 into the installation groove 5-1, and at the same time make the baffle 5-3 drive the installation frame 5-4 to move toward the first base plate 1-0 and the second base plate 2-0, and at the same time make the installation frame 5-4 drive the limit bar 5-5 to be inserted into the limit groove 5-6, so as to facilitate the fastening of the first base plate 1-0 and the second base plate 2-0, which is beneficial to improve the fastening ability of the installation frame 5-4 and the supporting stability of the device.
[0065] The working principle of the present invention is as follows: first, the concrete beams and columns of the reinforced concrete pipe gallery are split according to the construction drawings and prefabricated in the prefabrication yard. After the construction of the cup-mouth foundation is completed, the corresponding prefabricated columns 1 and prefabricated beams 2 are transported to the foundation. The prefabricated column 1 is first hoisted and fixed in the cup-mouth foundation, and a temporary diagonal brace is installed. Then, the prefabricated beams 2 are installed and fixed layer by layer using a lift or a crankshaft truck. A template 13 clamp is installed at the beam-column connection node. After completion, high-strength non-shrinkage concrete is poured to form an integral and unweakened transverse frame. The hoisting calculations are performed on the concrete beams and columns hoisted separately. The bearing capacity of the longitudinal unsupported section of the concrete column is also verified as a cantilever column. Finally, the envelope reinforcement is performed in combination with the overall calculation results to ensure safety.
[0066] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims
1. A new reinforced concrete prefabricated pipe gallery construction method, characterized by: The steps include: Step 1: Split the concrete beams and columns of the reinforced concrete pipe gallery according to the construction drawings and prefabricate them in the prefabrication yard; Step 2: After the construction of the cup-mouth foundation is completed, the corresponding prefabricated columns (1) and prefabricated beams (2) are transported to the side of the foundation, the prefabricated columns (1) are first hoisted and fixed in the cup-mouth foundation, temporary diagonal braces are installed, and then the prefabricated beams (2) are installed layer by layer using a lift or a crank truck and fixed, and the template (13) fixture is installed at the beam-column connection node; Step 3: After completion, pour high-strength grade non-shrinkage concrete to form a lateral frame with no weakening of the integrity.
2. A new reinforced concrete prefabricated pipe gallery construction method according to claim 1, characterized in that: The pipe gallery construction method comprises four modules: a foundation fixing module, a prefabricated column supporting module, a beam-column connecting module and a beam-column hoisting module.
3. A new reinforced concrete prefabricated pipe gallery construction method according to claim 2, characterized in that: The basic fixing module is manufactured as follows: After the prefabricated column (1) is hoisted in place, a column elevation leveling device (7) is first installed on the bottom suspension rod, and plays the role of initially fixing the prefabricated column (1) and the cup-shaped foundation. After a certain number of prefabricated columns (1) are installed, the cup-shaped foundation can be initially grouted and the top surface of the foundation can be polished and smoothed.
4. A new reinforced concrete prefabricated pipe gallery construction method according to claim 2, characterized in that: The manufacturing of the prefabricated column support module is as follows: After the prefabricated column (1) is fixed in the cup foundation, the temporary support of the column is installed, the lateral support base plate (6) is placed in a suitable position, and then the base plate anchor nails (5) are inserted to lock the base plate.
5. A new reinforced concrete prefabricated pipe gallery construction method according to claim 2, characterized in that: The beam-column connection module is manufactured as follows: After all the prefabricated columns (1) are fixed and the lateral braces are installed, the prefabricated beams (2) can be hoisted upwards in sequence from the lowest layer. The prefabricated beams (2) are placed on the supporting I-beams. The longitudinal reinforcements are connected one by one with the frame beams on the prefabricated columns (1) by using sleeve-type mechanical connections. After the prefabricated beams (2) are hoisted in place, workers are sent to the connection nodes using a scissor lift or a crank lift. The threaded sleeves and bolt barrels are screwed on one by one, and then all the steel bar connection bolt sleeves are screwed until they cannot be screwed. Then the beam stirrups are installed, and then the U-shaped hoops (12) and the templates (13) are installed at the connection nodes. Then, the beam top embedded steel plates are installed according to design requirements.
6. A new reinforced concrete prefabricated pipe gallery construction method according to claim 2, characterized in that: The beam-column hoisting module is manufactured as follows: The column top round steel hoisting rod (8) adopts an automatic unhooking device, and the prefabricated beam (2) is directly hoisted by a steel pipe hoisting beam and a sling.
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