A fixed reaction wall loading hole module rod device and construction method thereof

Abstract

The invention discloses a rod device for fixing a reaction wall loading hole module and a construction method thereof, comprising a front section rod for fixing the loading hole module, a rear section rod for connecting and fixing with a concrete wall, a coaxial rod formed by a sleeve between the front section rod and the rear section rod, and a construction method thereof comprising: step 1: hoisting the reaction wall loading hole module in place and correcting and fixing it according to the requirements of the design drawings; step 2: connecting and installing the front section rod with the loading hole; step 3: connecting and installing the front section rod with an adjustable sleeve; step 4: connecting and installing the rear section rod with the concrete wall and integrating it with the front section rod; step 5: installing the reaction wall steel bars and fixing the prestressed tendons; step 6: supporting the reaction wall formwork; step 7: pouring the reaction wall concrete. The invention solves the unstable state of the reaction wall loading hole module, improves the installation accuracy of the reaction wall loading hole, ensures quality, is safe and reliable, and provides a new process technology for the high-precision installation and construction of the reaction wall loading hole.

Description

Technical field:

[0002] The invention relates to the field of installation and construction of reaction wall loading hole modules in the field of construction, and mainly relates to a rod device for fixing the reaction wall loading hole modules and a construction method thereof. Background technology:

[0004] The reaction wall and reaction pedestal are important facilities in the seismic laboratory for quasi-static or quasi-dynamic tests of various structural components and structural systems. This facility can carry out two-dimensional pseudo-dynamic test research on structures and components. Many loading holes are embedded in the concrete structure of the reaction wall and reaction pedestal for fixing test instruments and equipment. The embedded loading holes have extremely high requirements for installation positioning, verticality and flatness of the loading hole end plate (designed to be millimeter level) to ensure that the relevant instruments and equipment are accurately installed and the test data is accurate during the test.

[0005] For the convenience of construction, the reaction wall loading holes are assembled into unit modules through rigid steel frames in the factory according to the designed pre-embedded spacing and transportation conditions. The loading hole modules have high strength and rigidity. The loading hole modules are transported to the construction site, hoisted to the designed pre-embedded position in the reaction wall, and the position, elevation and verticality of the loading hole modules are adjusted until the design requirements are met. In order to ensure the accuracy of the loading holes, the installed and calibrated loading hole modules must be reinforced before proceeding to the next construction process. The usual practice is: after the reaction wall loading hole module is installed and calibrated, on the basis of the firm connection between the bottom steel plate of the loading hole module and the embedded bolts, the loading hole module is welded to the original steel bars, steel columns and steel beams in the reaction wall using angle steel to increase the stability of the loading hole module.

[0006] During the construction process, since the lower part of the steel bars and steel columns in the reaction wall are embedded in the concrete, the upper part is free in a cantilever state, and its own rigidity and stability are poor, it is difficult to ensure the stability of the loading hole module connected to it. When supporting the reaction wall formwork and pouring concrete, it is very easy to disturb the loading hole module due to the influence of external loads, which directly affects the accuracy of the pre-embedded loading hole.

[0007] After research, it was found that the loading hole module is fixed on a solid supporting object through the rods connected to it, and the number of rods is adjusted according to the size of the loading hole module. The front section of the rod is tightly connected to the loading hole as a whole, and the rear section of the rod is fixed on the completed concrete wall. A sleeve is set in the middle of the rod for easy installation. The reaction wall loading hole module is not connected to the steel bars, steel columns, and steel beams in the wall. This device eliminates the influence of external factors such as pouring concrete and supporting formwork on the accuracy of the loading hole module.

[0008] Based on the above technical problems existing in the prior art, the present application proposes a fixed reaction wall loading hole module rod device and a construction method thereof to achieve this technical requirement. Summary of the invention:

[0010] The purpose of the present invention is to make up for the defects of the existing technology and provide a fixed reaction wall loading hole module rod device and its construction method, eliminating the conventional practice, that is, the reaction wall loading hole module is connected and fixed by using steel bars, steel columns and steel beams in the wall. After the loading hole module is installed, when supporting the reaction wall formwork and pouring the reaction wall concrete, the influence of external loads on the accuracy of the loading hole module is reduced, so as to meet the accuracy of the pre-embedded installation of the reaction wall loading hole.

[0011] The present invention is achieved through the following technical solutions:

[0012] A device for fixing a reaction wall loading hole module rod comprises a front section rod for fixing the loading hole module, and a rear section rod for connecting and fixing to a concrete wall, wherein a coaxial rod is formed by a sleeve between the front section rod and the rear section rod, and three threaded threads are distributed on the front section rod, and the loading hole module is screwed into the first two threaded threads, one end of the rear section rod has external threaded threads, and a fixing plate is welded to the other end, and the sleeve is a pipe fitting provided with internal threaded threads, and the sleeve is screwed into the rear end portion of the front section rod and the front end portion of the rear section rod, and the relative position between the front section rod and the rear section rod is adjustable.

[0013] The three thread teeth on the front section rod are respectively located at both ends and the middle of the rod, and the middle position matches the length of the loading hole module from the front end to the middle.

[0014] After the front section rod passes through the loading hole module, positioning plugs are set between the two ends of the loading hole module and the rod, and then the nuts are matched with the threaded teeth on the front section rod to tighten the positioning plugs, so that the loading hole module and the front section rod are tightly integrated.

[0015] The positioning plug is a stepped plug body structure, with a through hole in the middle, the through hole sleeve is tightly sleeved on the front section rod, the outer circular surface of the plug body inside the step passes through the loading hole module, and its step surface is limitedly matched with the end face of the loading hole module.

[0016] Locking nuts are arranged on both sides of the sleeve, and the locking nuts are used to lock the movement of the sleeve.

[0017] The front section rod and the rear section rod are both hollow shafts, and the front section rod, the rear section rod and the sleeve are all made of metal materials.

[0018] The fixing plate at the rear end of the rear section rod is fixed to the concrete wall by embedded bolts.

[0019] The embedded bolt is a horizontally arranged L-shaped rod structure, and the end of the horizontal section is provided with a thread.

[0020] The construction method of the fixed reaction wall loading hole module rod device comprises the following steps:

[0021] Step 1: According to the design drawings, the reaction wall loading hole module is hoisted into place and calibrated and fixed

[0022] First, the installation control line of the loading hole is measured and laid out, and the elevation reference point is determined. The elevation and flatness of the supporting steel plate of the reaction wall loading hole module are adjusted. Then, the reaction wall loading hole module is transported and hoisted. Then, the position of the reaction wall loading hole module is adjusted, the horizontal elevation of the reaction wall loading hole module is adjusted, and the verticality and concentricity of the reaction wall loading hole module are adjusted. Finally, the reaction wall loading hole module is reinforced and fixed.

[0023] Step 2: Connect and install the front section rod and loading hole

[0024] Insert the front section rod into the loading hole module. The front end and middle external thread teeth of the front section rod are in the right position at both ends of the loading hole module. Place positioning plugs at both ends of the loading hole module, and then tighten the external nuts to make the rod and the loading hole become one.

[0025] Step 3: Connect and install the front rod and adjustable sleeve

[0026] Screw the locking nut and sleeve into the rear end of the front rod in sequence, and rotate the locking nut and sleeve until they are in a position that does not affect the installation of the rear rod;

[0027] Step 4: The rear section of the rod is connected to the concrete wall and installed to form an integral part of the front section of the rod

[0028] Install the rear section rod first, align the reserved holes at the four corners of the rear section rod end fixing plate with the embedded bolts on the rear wall and insert them, temporarily fix the rear section rod end fixing plate with nuts, and do not tighten them for the time being. The hole diameters of the four corners of the rear section rod end fixing plate are slightly larger than the embedded bolts, so that the plane position of the rear section rod can be slightly adjusted. Screw in the nut at the other end of the rear section rod first, and then align the sleeve connected to the front section rod with the rear section rod. When rotating the sleeve back on the front section rod, adjust the plane position of the rear section rod appropriately until the sleeve is screwed into the rear section rod. Rotate the sleeve until the length of the rear section rod end is roughly equal to that of the front section rod end. At this time, tighten the nut that fixes the steel plate at the rear section rod end, and finally tighten the nuts on both sides of the sleeve to lock the rod length.

[0029] Step 5: Install the reaction wall reinforcement and fix the prestressed tendons

[0030] Tie up the wall panel reinforcement, install and fix the prestressed reinforcement and tie up the reinforcement alternately, and try not to touch the loading hole module during the construction process;

[0031] Step 6: Support the reaction wall formwork

[0032] The formwork is implemented according to the construction process of plain formwork, and is controlled from the aspects of material selection, formwork construction design, formwork installation and construction, steel bar protection layer control and concrete pouring;

[0033] Step 7: Pour the reaction wall concrete

[0034] Before pouring, focus on treating the construction joint interface between the front and rear walls to ensure that the two pours of concrete are tightly combined. Pumped concrete is used for concrete pouring, and the reaction wall concrete is poured in layers. By changing the position of the pumping pipe mouth, the concrete forms a fan-shaped flow forward after pouring, and then is poured continuously on its slope, gradually advancing until the height of one layer. When vibrating the previous layer, the vibrating rod should be inserted into the next layer of concrete about 5-10cm to eliminate the joints between layers. Spray devices are set on the external scaffolding on both sides of the wall. After removing the formwork, spray water to keep the concrete surface moist.

[0035] The advantages of the present invention are:

[0036] The present invention can directly fix the reaction wall loading hole module on the concrete wall through the rod, thereby realizing independent fixing of the reaction wall loading hole module, being technically reliable and having expected quality. It technically solves the conventional practice of the unstable state in which the reaction wall loading hole module is connected to the steel bars, steel columns and steel beams in the wall, thereby improving the installation accuracy of the reaction wall loading hole, ensuring quality, being safe and reliable, and providing a new process technology for the high-precision installation and construction of the reaction wall loading hole. Description of the drawings:

[0038] Figure 1 It is a structural schematic diagram of the reaction wall loading hole module fixing rod device of the present invention.

[0039] Figure 2 It is an axonometric diagram of the front section of the reaction wall loading hole module of the present invention.

[0040] Figure 3 It is an axonometric view of a positioning plug for connecting a loading hole and a rod member according to the present invention.

[0041] Figure 4 It is an axonometric view of the reaction wall loading hole module sleeve of the present invention.

[0042] Figure 5 It is an axonometric diagram of the rear section of the reaction wall loading hole module of the present invention.

[0043] Figure 6 It is a plan view of the embedded bolts of the reaction wall loading hole module of the present invention.

[0044] The numbers in the figure are as follows:

[0045] 1. Loading hole module; 2. Front section rod; 3. Concrete wall; 4. Rear section rod; 5. Sleeve; 6. Positioning plug; 7. Nut; 8. Locking nut; 9. Embedded bolt; 10. Fixing plate. Specific implementation method:

[0047] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the condition of reasonable arrangement of structural parts, the embodiments of the present invention application and the structural parts in the embodiments can be combined with each other.

[0048] See attached Figure 1-6 .

[0049] A device for fixing a reaction wall loading hole module rod comprises a front section rod 2 for fixing the loading hole module 1, and a rear section rod 4 for connecting and fixing to a concrete wall 3. A sleeve 5 is provided between the front section rod 2 and the rear section rod 4 to form a coaxial rod to eliminate disturbance deformation. Three threads are distributed on the front section rod 2, and the loading hole module 1 is screwed into the first two threads. One end of the rear section rod 4 has an external thread, and a fixing plate 10 is welded to the other end. The sleeve 5 is a pipe fitting provided with an internal thread. The sleeve 5 is screwed into the rear end portion of the front section rod 2 and the front end portion of the rear section rod 4, and the relative position between the front section rod 2 and the rear section rod 4 is adjustable.

[0050] Furthermore, the three thread teeth on the front section rod 2 are respectively located at both ends and the middle of the rod, and the middle position matches the length of the loading hole module 1 from the front end to the middle.

[0051] Furthermore, after the front section rod 2 passes through the loading hole module 1, positioning plugs 6 are set between the two ends of the loading hole module 1 and the rod, and then the nuts 7 are matched with the threaded threads on the front section rod 2 to tighten the positioning plugs 6, so that the loading hole module 1 and the front section rod 2 are tightly integrated.

[0052] Furthermore, the positioning plug 6 is a stepped plug body structure, with a through hole in the middle, the through hole sleeve is tightly fitted on the front section rod, the outer circular surface of the plug body on the inner side of the step passes through the loading hole module, and its step surface is limitedly matched with the end face of the loading hole module.

[0053] Furthermore, locking nuts 8 are provided on both sides of the sleeve 5, and the locking nuts 8 are used to lock the sleeve 5 to prevent it from moving.

[0054] Furthermore, the front section rod 2 and the rear section rod 4 are both hollow shafts, and the front section rod 2, the rear section rod 4 and the sleeve 5 are all made of metal materials.

[0055] Furthermore, the fixing plate at the rear end of the rear section rod 4 is fixed to the concrete wall 3 by embedded bolts 9. The embedded bolts 9 are L-shaped rod structures arranged horizontally, and the ends of the horizontal sections are provided with threads.

[0056] During the implementation process, the dimensions can be as follows: the front section rod 2 is set to be a steel pipe with a diameter of 60mm, a wall thickness of 10mm, and a length of 500mm; the rear section rod 4 is set to be a steel pipe with a diameter of 60mm, a wall thickness of 10mm, and a length of 1500mm; the sleeve 5 is a steel pipe with an inner diameter of 60mm, a wall thickness of 15mm, and a length of 100mm; the positioning plug 6 is inserted into the loading hole module 1 with an outer diameter of 80mm at one end and an outer diameter of 90mm at the other end, an inner diameter of 60mm, and a thickness of 45mm; the nut has a diameter of 60mm and a thickness of 12mm; the fixing plate at one end of the rear section rod 4 is a steel plate with a size of 200*200*16, and a reserved hole diameter of 24mm, four in number.

[0057] The above is for the case where the length of the loading hole module 1 is 900mm, the inner diameter is 80mm, and the distance between the loading hole and the fixed concrete wall is 1000mm. If the length and diameter of the loading hole module 1 and the distance between the loading hole module 1 and the fixed concrete wall 8 are different, the above dimensions can be appropriately adjusted.

[0058] The construction method of the fixed reaction wall loading hole module rod device comprises the following steps:

[0059] Step 1: According to the design drawings, the reaction wall loading hole module is hoisted into place and calibrated and fixed

[0060] First, the installation control line of the loading hole is measured and laid out, and the elevation reference point is determined. The elevation and flatness of the supporting steel plate of the reaction wall loading hole module are adjusted. Then, the reaction wall loading hole module is transported and hoisted. Then, the position of the reaction wall loading hole module is adjusted, the horizontal elevation of the reaction wall loading hole module is adjusted, and the verticality and concentricity of the reaction wall loading hole module are adjusted. Finally, the reaction wall loading hole module is reinforced and fixed.

[0061] Step 2: Connect and install the front section rod and loading hole

[0062] Insert the front section rod into the loading hole module. The front end and middle external thread teeth of the front section rod are in the right position at both ends of the loading hole module. Place positioning plugs at both ends of the loading hole module, and then tighten the external nuts to make the rod and the loading hole become one.

[0063] Step 3: Connect and install the front rod and adjustable sleeve

[0064] Screw the locking nut and sleeve into the rear end of the front rod in sequence, and rotate the locking nut and sleeve until they are in a position that does not affect the installation of the rear rod;

[0065] Step 4: The rear section of the rod is connected to the concrete wall and installed to form an integral part of the front section of the rod

[0066] Install the rear section rod first, align the reserved holes at the four corners of the rear section rod end fixing plate with the embedded bolts on the rear wall and insert them, temporarily fix the rear section rod end fixing plate with nuts, and do not tighten them for the time being. The hole diameters of the four corners of the rear section rod end fixing plate are slightly larger than the embedded bolts, so that the plane position of the rear section rod can be slightly adjusted. Screw in the nut at the other end of the rear section rod first, and then align the sleeve connected to the front section rod with the rear section rod. When rotating the sleeve back on the front section rod, adjust the plane position of the rear section rod appropriately until the sleeve is screwed into the rear section rod. Rotate the sleeve until the length of the rear section rod end is roughly equal to that of the front section rod end. At this time, tighten the nut that fixes the steel plate at the rear section rod end, and finally tighten the nuts on both sides of the sleeve to lock the rod length.

[0067] Step 5: Install the reaction wall reinforcement and fix the prestressed tendons

[0068] Tie up the wall panel reinforcement, install and fix the prestressed reinforcement and tie up the reinforcement alternately, and try not to touch the loading hole module during the construction process;

[0069] Step 6: Support the reaction wall formwork

[0070] The formwork is implemented according to the construction process of plain formwork, and is controlled from the aspects of material selection, formwork construction design, formwork installation and construction, steel bar protection layer control and concrete pouring;

[0071] Step 7: Pour the reaction wall concrete

[0072] Before pouring, focus on treating the construction joint interface between the front and rear walls to ensure that the two pours of concrete are tightly combined. Pumped concrete is used for concrete pouring, and the reaction wall concrete is poured in layers. By changing the position of the pumping pipe mouth, the concrete forms a fan-shaped flow forward after pouring, and then is poured continuously on its slope, gradually advancing until the height of one layer. When vibrating the previous layer, the vibrating rod should be inserted into the next layer of concrete for about 5-10cm to eliminate the joints between layers. In order to prevent honeycombed hemp on the concrete surface, use a surface vibrator to vibrate, and assist with wooden hammers to knock on the surface of the formwork to make the concrete around the loading hole end plate dense and eliminate holes between the contact surface of the concrete and the formwork. Spray devices are set on the external scaffolding on both sides of the wall. After removing the formwork, spray water to keep the concrete surface moist. The curing time is not less than 14 days, and heavy objects should be avoided from hitting the wall.

[0073] The present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, which are within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the appended claims.

Claims

1. A fixed reaction wall loading hole module rod device, characterized in that: The invention comprises a front section rod (2) for fixing a loading hole module (1), and a rear section rod (4) for connecting and fixing to a concrete wall (3); the front section rod (2) and the rear section rod (4) are connected to form a coaxial rod through a sleeve (5); the front section rod (2) is provided with three threaded threads, and the first two threaded threads are screwed with the loading hole module (1); one end of the rear section rod (4) is provided with external threaded threads, and the other end is welded with a fixing plate (10); the sleeve (5) is a pipe with internal threaded threads; the sleeve (5) is screwed on the rear end of the front section rod (2) and the front end of the rear section rod (4); and the relative position between the front section rod (2) and the rear section rod (4) is adjustable; The three thread teeth on the front section rod (2) are respectively located at the two ends and the middle of the rod, and the middle position matches the length of the loading hole module (1) from the front end to the middle; After the front section rod (2) passes through the loading hole module (1), positioning plugs (6) are arranged between the two ends of the loading hole module (1) and the rod, and then nuts (7) are matched with the threaded teeth on the front section rod (2) to press against the positioning plugs (6), so that the loading hole module (1) and the front section rod (2) are tightly integrated; The positioning plug (6) is a stepped plug body structure, wherein a through hole is provided in the middle thereof, the through hole is tightly sleeved on the front section rod, the outer circular surface of the plug body on the inner side of the step penetrates into the loading hole module, and the step surface is limitedly matched with the end surface of the loading hole module; Locking nuts (8) are provided on both sides of the sleeve (5), and the locking nuts (8) are used to lock the movement of the sleeve (5); The front rod (2) and the rear rod (4) are both hollow shafts, and the front rod (2), the rear rod (4) and the sleeve (5) are all made of metal materials; The fixing plate at the rear end of the rear section rod (4) is fixed to the concrete wall (3) by means of embedded bolts (9); The embedded bolt (9) is a horizontally arranged L-shaped rod structure, and the end of the horizontal section is provided with a thread.

2. The construction method of the fixed reaction wall loading hole module rod device according to claim 1 is characterized in that: The steps include: Step 1: According to the design drawings, the reaction wall loading hole module is hoisted into place and calibrated and fixed First, the installation control line of the loading hole is measured and laid out, and the elevation reference point is determined. The elevation and flatness of the supporting steel plate of the reaction wall loading hole module are adjusted. Then, the reaction wall loading hole module is transported and hoisted. Then, the position of the reaction wall loading hole module is adjusted, the horizontal elevation of the reaction wall loading hole module is adjusted, and the verticality and concentricity of the reaction wall loading hole module are adjusted. Finally, the reaction wall loading hole module is reinforced and fixed. Step 2: Connect and install the front section rod and loading hole Insert the front section rod into the loading hole module. The front end and middle external thread teeth of the front section rod are in the right position at both ends of the loading hole module. Place positioning plugs at both ends of the loading hole module, and then tighten the external nuts to make the rod and the loading hole become one. Step 3: Connect and install the front rod and adjustable sleeve Screw the locking nut and sleeve into the rear end of the front rod in sequence, and rotate the locking nut and sleeve until they are in a position that does not affect the installation of the rear rod; Step 4: The rear section of the rod is connected to the concrete wall and installed to form an integral part of the front section of the rod Install the rear section rod first, align the reserved holes at the four corners of the rear section rod end fixing plate with the embedded bolts on the rear wall and insert them, temporarily fix the rear section rod end fixing plate with nuts, and do not tighten them for the time being. The hole diameters of the four corners of the rear section rod end fixing plate are slightly larger than the diameter of the embedded bolts, so that the plane position of the rear section rod can be slightly adjusted. Screw in the nut at the other end of the rear section rod first, and then align the sleeve connected to the front section rod with the rear section rod. When rotating the sleeve on the front section rod, adjust the plane position of the rear section rod appropriately until the sleeve is screwed into the rear section rod. Rotate the sleeve until the length of the rear section rod end is roughly equal to that of the front section rod end. At this time, tighten the nut that fixes the steel plate at the rear section rod end, and finally tighten the nuts on both sides of the sleeve to lock the rod length. Step 5: Install the reaction wall reinforcement and fix the prestressed tendons Tie up the wall panel reinforcement, install and fix the prestressed reinforcement and tie up the reinforcement alternately, and try not to touch the loading hole module during the construction process; Step 6: Support the reaction wall formwork Implement according to the construction process of clear water formwork, and control from the aspects of material selection, formwork construction design, formwork installation and construction, steel bar protection layer control and concrete pouring; Step 7: Pour the reaction wall concrete Before pouring, focus on treating the construction joint interface between the front and rear walls to ensure that the two pours of concrete are tightly combined. Pumped concrete is used for concrete pouring, and the reaction wall concrete is poured in layers. By changing the position of the pumping pipe mouth, the concrete forms a fan-shaped flow forward after pouring, and then is poured continuously on its slope, gradually advancing until the height of one layer. When vibrating the previous layer, the vibrating rod should be inserted into the next layer of concrete by 5-10cm to eliminate the joints between layers. Spray devices are set on the external scaffolding on both sides of the wall. After removing the formwork, spray water to keep the concrete surface moist.

Images