Prefabricated wall cavity casting construction method

Abstract

The present invention relates to the field of building construction technology, and in particular to a method for pouring a prefabricated wall cavity, comprising pre-embedded positioning steel bars, installing a prefabricated wall, installing a plurality of support devices on one side of the installed prefabricated wall to support the prefabricated wall, and pouring concrete into the cavity of the prefabricated wall. The present invention monitors the real-time inclination angle of the prefabricated wall and the real-time pressure of the long support rod and the short support rod during the concrete pouring process, and constantly monitors the position of the prefabricated wall during the concrete pouring process. It makes a judgment based on a first preset angle, a second preset angle, a standard pressure of the long support rod, and a standard pressure of the short support rod to determine how to adjust the support device, thereby ensuring that any slight position problem of the prefabricated wall will be monitored and adjusted accordingly, thereby ensuring the accuracy of the position of the prefabricated wall during the concrete pouring.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a prefabricated wall cavity casting construction method. Background Art

[0002] During construction, fully prefabricated components are often used, often prefabricated walls with cavities. During prefabricated wall installation and concrete pouring, it is crucial to ensure the accuracy of the prefabricated wall installation position and the stability of the wall. Furthermore, it is crucial to avoid vertical and horizontal deviation of the prefabricated wall during concrete pouring to ensure construction quality. Therefore, it is necessary to improve existing technologies.

[0003] Chinese Patent Publication No. CN109797902A discloses a prefabricated, assembled building wall panel. Its technical point is to utilize the characteristics of both prefabricated wall panels and reinforced lap wall panels to achieve connections through cast-in-place concrete. As can be seen, existing technologies all rely on simple concrete pouring. Because the pouring process is not monitored and adjusted, the prefabricated wall is prone to tilt or offset, resulting in errors. Even if errors are detected, the adjustment efficiency is very low, making it unsuitable for construction. Summary of the Invention

[0004] To this end, the present invention provides a prefabricated wall cavity casting construction method to overcome the problem of inaccurate position during prefabricated wall casting in the prior art.

[0005] To achieve the above object, the present invention provides a prefabricated wall cavity casting construction method, comprising the following steps:

[0006] Step S1: pre-embed positioning steel bars, determine the installation position of the prefabricated wall, insert the positioning steel bars at the installation position and fix them with concrete, insert guide angle steels on one side of the positioning steel bars according to the thickness of the prefabricated wall, and fix the guide angle steels on the plane of the installation position with ground nails;

[0007] Step S2: Install the prefabricated wall. Lift the prefabricated wall with a lifting tool and move the prefabricated wall so that its positioning edge enters the inner angle groove of the guide angle steel. Control the lifting tool to lower the prefabricated wall so that the embedded positioning steel bar is inserted into the limiting hole at the bottom of the prefabricated wall and calibrated.

[0008] Step S3, installing several supporting devices on one side of the prefabricated wall to support the prefabricated wall, and installing detection devices on the prefabricated wall and the supporting devices, wherein the supporting devices include a long support rod, a short support rod, a U-shaped bracket and a fixing ring, and the detection device includes a first pressure sensor for detecting the real-time pressure of the long support rod, a second pressure sensor for detecting the real-time pressure of the short support rod, and an inclination sensor for detecting the real-time inclination angle of the prefabricated wall;

[0009] Step S4: placing a steel cage in the cavity of the prefabricated wall, pouring concrete into the cavity of the prefabricated wall, inserting a vibrating rod into the concrete in the cavity of the prefabricated wall, and starting a vibrating device to vibrate until the cavity pouring of the prefabricated wall is completed;

[0010] Step S5, monitoring the real-time inclination angle of the prefabricated wall and the real-time pressures of the long support rod and the short support rod, obtaining the real-time pressure of the long support rod when the real-time inclination angle is between a first preset angle and a second preset angle, and when the real-time pressure of the long support rod exceeds the standard pressure of the long support rod, determining the real-time pressure of the short support rod and determining an adjustment method; when the real-time pressure of the short support rod exceeds the standard pressure of the short support rod, calculating the excess pressure ratios of the long support rod and the short support rod and determining an adjustment method;

[0011] The adjustment methods include adjusting the length of the long support rod, increasing the number of long support rods, increasing the length of the short support rods, and increasing the number of short support rods.

[0012] Furthermore, in step S5, when the real-time inclination angle of the prefabricated wall is greater than the second preset angle, the length of the long support rod is adjusted, the U-shaped bracket located on the floor or the ground is loosened, and the long support rod is slowly pushed toward the prefabricated wall. When the real-time inclination angle of the prefabricated wall is less than the first preset angle, the pushing is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened.

[0013] Further, in the step S5, under the second preset condition, when the real-time pressure of the short support rod does not exceed the standard pressure of the short support rod, the short support rod meets the support standard, and the number of long support rods will be increased. The increased number of long support rods Rz is calculated as, Rz=Lx / (Lc / 2), Lx=[1-(Ps1-P1) / Ps1]×Lc, wherein Rz is the increased number of long support rods, Rz is rounded up, Lx is the corrected spacing, Lc is the initial support spacing of the support device, and Rz long support rods are respectively added on both sides of the determined support device, the length of each increased long support rod is equal to the length of the long support rod in the support device, and is evenly distributed between the two support devices;

[0014] Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

[0015] Furthermore, in step S5, under the second preset condition, when the excess pressure ratio of the long support rod is less than the excess pressure ratio of the short support rod, the length of the short support rod is increased, the U-shaped bracket located on the floor or the ground is loosened, and the short support rod is slowly pushed toward the prefabricated wall. When the real-time pressure of the short support rod does not exceed the standard pressure of the short support rod, the pushing is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened.

[0016] Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

[0017] Further, in the step S5, under the second preset condition, when the pressure excess ratio of the long support rod is greater than or equal to the pressure excess ratio of the short support rod, the number of the short support rods is increased, and the increased number Rd of the short support rods is calculated as, Rd=Lx / (Lc / 2), Rd is rounded up, Lx=[1-(Ps2-P2) / Ps2]×Lc, wherein Rd is the increased number of short support rods, Lx is the corrected spacing, and Lc is the initial support spacing of the support device, and Rd short support rods are respectively added on both sides of the determined support device, the length of each increased short support rod is equal to the length of the short support rods in the support device, and the short support rods are evenly distributed between the two support devices;

[0018] Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

[0019] Furthermore, the first pressure sensor is arranged on the fixed ring between the long support rod and the prefabricated wall to detect the real-time pressure of the long support rod; the second pressure sensor is arranged on the fixed ring between the short support rod and the prefabricated wall to detect the real-time pressure of the short support rod; the inclination sensor is arranged on the prefabricated wall, and the distance from the bottom of the board or the ground is four-fifths of the height of the prefabricated wall to detect the real-time inclination angle of the prefabricated wall.

[0020] Furthermore, the two ends of the support rod should be fixed to the prefabricated wall and floor or ground respectively, and the initial distance between the long support rod and the bottom of the slab or the ground is 2 / 3 of the height of the prefabricated wall, and the initial distance between the short support rod and the bottom of the slab is 1 / 5 of the height of the prefabricated wall;

[0021] Furthermore, the step S2 includes:

[0022] Step S21, measuring and setting floor plane control lines and elevation control lines;

[0023] Step S22: Check the position and verticality of the steel bars reserved for this floor through the plane control line and make adjustments to ensure the accuracy of the steel bar position;

[0024] Step S23: Before the prefabricated wall panels are hoisted, shims and adjustable bolts / nuts are installed at the base of the prefabricated wall so that the top elevation meets the bottom elevation requirement for the prefabricated wall panels.

[0025] Step S24: Install extruded boards on site for blocking. The extruded boards should be installed on the upper part of the sandwich wall insulation.

[0026] Furthermore, the step S3 includes checking and adjusting the installation position, installation elevation and verticality of the prefabricated wall after installation, as follows:

[0027] Step S31, correcting the horizontal position of the parallel prefabricated wall, correcting the position of the prefabricated wall according to the prefabricated wall position line popped up on the floor surface, and adjusting the deviation with a crowbar;

[0028] Step S32, correcting the horizontal position of the vertical prefabricated wall, and adjusting the base of the wall panel using the short support rod to control the horizontal position of the wall panel;

[0029] Step S33, correcting the verticality of the prefabricated wall. After the horizontal position of the prefabricated wall is adjusted, the verticality of the wall is adjusted by adjusting the horizontal displacement of the top of the prefabricated wall using the long support rod.

[0030] Step S34, use a level to check the level. If it is found that the bottom of the prefabricated wall is not level, use a ruler to check again. If there is still a vertical deviation, use a tower crane to add or remove spacers until it is level.

[0031] Furthermore, in the step S4, the vibrating rod insertion points are evenly arranged, and the vibrating rod is vertically inserted into the insertion point concrete at a position of 0.05-0.1m. The concrete is the lower layer concrete that has not yet initially set. After insertion, the vibrating rod is vibrated in the concrete, and each insertion point is vibrated to make the concrete uniformly compacted; the prefabricated wall cavity remains stationary for 12 hours after the concrete is poured. The temporary fixing measures are removed after the post-poured concrete reaches 100% strength.

[0032] Compared with the prior art, the beneficial effect of the present invention lies in that by monitoring the real-time inclination angle of the prefabricated wall and the real-time pressure of the long support rod and the short support rod during the concrete pouring process, the position of the prefabricated wall during concrete pouring is monitored at all times, and the real-time pressure of the long support rod is obtained when the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle, and it is judged whether the long support rod meets the support standard. If it does not meet the standard, the real-time pressure of the short support rod is obtained. When the real-time pressures of the short support rod and the long support rod exceed the standard pressure, the pressure excess ratio of the long support rod and the short support rod is calculated, and how to adjust the support device is calculated in detail. Any slight position problem of the prefabricated wall will be monitored and corresponding adjustments will be made to ensure the accuracy of the prefabricated wall position during concrete pouring. At the same time, different adjustment methods greatly improve the construction work efficiency for different situations.

[0033] Furthermore, by checking and adjusting the installation position, installation elevation and verticality of the prefabricated wall, it is ensured that the prefabricated wall is in the correct position during installation.

[0034] In particular, by judging the real-time inclination angle of the prefabricated wall according to the set first preset angle and the second preset angle, when the real-time inclination angle of the prefabricated wall is greater than the second preset angle, it means that the prefabricated wall is seriously tilted. By adjusting the length of the long support rod, the supporting force of the prefabricated wall is increased, and the tilted prefabricated wall is supported so that it can continue construction normally, thereby ensuring the accuracy of the position of the prefabricated wall when pouring concrete.

[0035] Furthermore, by obtaining the real-time pressure of the short support rod to judge and select the adjustment method when the long support rod does not meet the support standard, two pressure monitoring points for the long support rod and the short support rod are set to better monitor which position of the prefabricated wall has problems, facilitate timely adjustment, and thus ensure the accuracy of the prefabricated wall position.

[0036] In particular, the adjustment method is further determined by judging the real-time pressure of the short support rod. When the short support rod meets the support standard, only the long support rod needs to be adjusted and the number of long support rods is increased. When the short support rod does not meet the support standard, the pressure excess ratio of the support rod and the short support rod is judged. If the pressure excess ratio of the long support rod is less than that of the short support rod, it indicates that the bottom is severely tilted and the length of the short support rod needs to be increased to improve its support force on the prefabricated wall. The adjustment method can be determined in time by only comparing the forces at the two places to ensure the accuracy of the position of the prefabricated wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a flow chart of the prefabricated wall cavity casting construction method according to an embodiment of the present invention;

[0038] Figure 2 This is a structural diagram of the prefabricated wall cavity casting construction in an embodiment of the present invention;

[0039] Figure 3 A flowchart of installing a prefabricated wall according to an embodiment of the present invention;

[0040] Figure 4 This is a flow chart of post-installation verification and adjustment of prefabricated walls according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0042] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0043] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0044] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] See also Figure 1 As shown, it is a flow chart of the prefabricated wall cavity casting construction method according to an embodiment of the present invention. This embodiment provides a prefabricated wall cavity casting construction method, comprising the following steps:

[0046] Step S1: pre-embed positioning steel bars, determine the installation position of the prefabricated wall, insert the positioning steel bars at the installation position and fix them with concrete, insert guide angle steels on one side of the positioning steel bars according to the thickness of the prefabricated wall, and fix the guide angle steels on the plane of the installation position with ground nails;

[0047] Step S2: Install the prefabricated wall. Lift the prefabricated wall with a lifting tool and move the prefabricated wall so that its positioning edge enters the inner angle groove of the guide angle steel. Control the lifting tool to lower the prefabricated wall so that the embedded positioning steel bar is inserted into the limiting hole at the bottom of the prefabricated wall and calibrated.

[0048] Step S3, installing several supporting devices on one side of the prefabricated wall to support the prefabricated wall, and installing detection devices on the prefabricated wall and the supporting devices, wherein the supporting devices include a long support rod, a short support rod, a U-shaped bracket and a fixing ring, and the detection device includes a first pressure sensor for detecting the real-time pressure of the long support rod, a second pressure sensor for detecting the real-time pressure of the short support rod, and an inclination sensor for detecting the real-time inclination angle of the prefabricated wall;

[0049] Step S4: placing a steel cage in the cavity of the prefabricated wall, pouring concrete into the cavity of the prefabricated wall, inserting a vibrating rod into the concrete in the cavity of the prefabricated wall, and starting a vibrating device to vibrate until the cavity pouring of the prefabricated wall is completed;

[0050] Step S5, monitoring the real-time inclination angle of the prefabricated wall and the real-time pressures of the long support rod and the short support rod, obtaining the real-time pressure of the long support rod when the real-time inclination angle is between a first preset angle and a second preset angle, and when the real-time pressure of the long support rod exceeds the standard pressure of the long support rod, determining the real-time pressure of the short support rod and determining an adjustment method; when the real-time pressure of the short support rod exceeds the standard pressure of the short support rod, calculating the excess pressure ratios of the long support rod and the short support rod and determining an adjustment method;

[0051] The adjustment methods include adjusting the length of the long support rod, increasing the number of long support rods, increasing the length of the short support rods, and increasing the number of short support rods.

[0052] By monitoring the real-time inclination angle of the prefabricated wall and the real-time pressure of the long support rod and the short support rod during the concrete pouring process, the position of the prefabricated wall during concrete pouring is monitored at all times. When the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle, the real-time pressure of the long support rod is obtained, and it is judged whether the long support rod meets the support standard. If it does not meet the standard, the real-time pressure of the short support rod is obtained. When the real-time pressures of the short support rod and the long support rod exceed the standard pressure, the pressure excess ratio of the long support rod and the short support rod is calculated, and the adjustment of the support device is calculated in detail. Any slight position problem of the prefabricated wall will be monitored and corresponding adjustments will be made to ensure the accuracy of the position of the prefabricated wall during concrete pouring. At the same time, different adjustment methods greatly improve the construction work efficiency according to different situations.

[0053] See also Figure 2 As shown, it is a structural diagram of the prefabricated wall cavity casting construction according to an embodiment of the present invention, including a prefabricated wall 1, a guide angle steel 2, an inclination sensor 3, a fixing ring 4, a long support rod 5, a U-shaped holder 6, a short support rod 7, a first pressure sensor 8, a second pressure sensor 9, and a positioning steel bar 10;

[0054] The inclination sensor 3 is arranged on the side of the prefabricated wall 1 away from the guide angle steel 2, the first pressure sensor 8 is arranged on the fixing ring 4 between the long support rod 5 and the prefabricated wall 1, and the second pressure sensor 9 is arranged on the fixing ring 4 between the short support rod 7 and the prefabricated wall 1.

[0055] Specifically, in step S5, the real-time tilt angle Qs of the prefabricated wall detected by the tilt sensor corresponding to any one of the supporting devices on the prefabricated wall is obtained, and the real-time tilt angle Qs of the prefabricated wall is determined according to the set first preset angle Q1 and the second preset angle Q2.

[0056] When Qs<Q1, it is determined that the real-time inclination angle of the prefabricated wall is less than the first preset angle, and the supporting device is not adjusted;

[0057] When Q1≤Qs≤Q2, it is determined that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle, and the real-time pressure of the prefabricated wall detected by the detection device is obtained to determine the adjustment method of the support device;

[0058] When Qs>Q2, it is determined that the real-time inclination angle of the prefabricated wall is greater than the second preset angle, then the length of the long support rod is adjusted, the U-shaped bracket located on the floor or the ground is loosened, and the long support rod is slowly pushed toward the prefabricated wall. When the real-time inclination angle of the prefabricated wall is less than the first preset angle, the pushing is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened.

[0059] In this embodiment, the setting of the initial first preset angle and the second preset angle is affected by factors such as the terrain around the construction site and the building height, and should be set specifically in combination with actual conditions. In this embodiment, the height of the prefabricated wall used is between 2.3 meters and 3.5 meters, and the corresponding first preset angle is set to 0.5 degrees and the second preset angle is set to 2.25 degrees. The specific settings also need to be adjusted in combination with the actual terrain conditions and building height, which will not be repeated here.

[0060] By judging the real-time inclination angle of the prefabricated wall according to the set first preset angle and the second preset angle, when the real-time inclination angle of the prefabricated wall is greater than the second preset angle, it means that the prefabricated wall is seriously tilted. By adjusting the length of the long support rod, the supporting force of the prefabricated wall is increased, and the tilted prefabricated wall is supported so that it can continue construction normally, thereby ensuring the accuracy of the position of the prefabricated wall when pouring concrete.

[0061] Specifically, in step S5, the real-time pressure Ps1 of the long support rod detected by the first pressure sensor is obtained under the first preset condition, and the standard pressure P1 of the long support rod is set to determine the real-time pressure Ps1 of the long support rod detected by the detection device.

[0062] When Ps1≤P1, it is determined that the real-time pressure Ps1 of the long support rod does not exceed the standard pressure P1 of the long support rod, the long support rod meets the support standard, and the support device is not adjusted;

[0063] When Ps1>P1, it is determined that the long support rod real-time pressure Ps1 has exceeded the long support rod standard pressure P1, and the long support rod does not meet the support standard. The short support rod real-time pressure Ps2 will be determined to determine the adjustment method;

[0064] The first preset condition is that the real-time tilt angle of the prefabricated wall is between the first preset angle and the second preset angle.

[0065] In this embodiment, the setting of the standard pressure of the long support rod is affected by factors such as the terrain around the construction site, the height of the prefabricated wall, the thickness of the prefabricated wall, the material of the wall, the density of concrete, etc., and should be set specifically based on actual conditions. Generally, the standard pressure of the long support rod is set to 650 Newtons. The specific setting also needs to be adjusted based on the actual height of the prefabricated wall, the thickness of the prefabricated wall, the material of the wall, the concrete density, and the setting interval of the support device, which will not be repeated here.

[0066] By obtaining the real-time pressure of the short support rod to judge and select the adjustment method when the long support rod does not meet the support standards, and setting two pressure monitoring points for the long support rod and the short support rod, it is possible to better monitor which position of the prefabricated wall has problems, facilitate timely adjustments, and thus ensure the accuracy of the prefabricated wall position.

[0067] Specifically, in step S5, the initial support spacing Lc of the support device is determined according to the material, weight, concrete density, and cavity volume of the prefabricated wall, the real-time pressure Ps2 of the short support rod detected by the second pressure sensor is obtained under the second preset condition, and the standard pressure P2 of the short support rod is set to determine the real-time pressure Ps2 of the short support rod detected by the detection device.

[0068] When Ps2≤P2, it is determined that the real-time pressure Ps2 of the short support rod does not exceed the standard pressure P2 of the short support rod, and the short support rod meets the support standard. The number of long support rods will be increased, and the increased number of long support rods Rz is calculated as, Rz=Lx / (Lc / 2), Lx=[1-(Ps1-P1) / Ps1]×Lc, where Rz is the increased number of long support rods, Rz is rounded up, Lx is the corrected spacing, and Lc is the initial support spacing of the support device. Rz long support rods are added on both sides of the determined support device, and the length of each increased long support rod is equal to the length of the long support rod in the support device, and is evenly distributed between the two support devices.

[0069] When Ps2>P2, it is determined that the real-time pressure Ps2 of the short support rod has exceeded the standard pressure P2 of the short support rod, and the short support rod does not meet the support standard. The pressure excess ratio of the long support rod and the short support rod is calculated and judged. A1=(Ps1-P1) / P1,A2=(Ps2-P2) / P2,where A1 is the pressure excess ratio of the long support rod, and A2 is the pressure excess ratio of the short support rod.

[0070] When A1<A2, it is determined that the excess pressure ratio of the long support rod is less than the excess pressure ratio of the short support rod. In this case, the length of the short support rod is increased, the U-shaped bracket on the floor or ground is loosened, and the short support rod is slowly pushed toward the prefabricated wall. When the real-time pressure Ps2 of the short support rod does not exceed the standard pressure P2 of the short support rod, the push is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened.

[0071] When A1≥A2, it is determined that the excess pressure ratio of the long support rods is greater than or equal to the excess pressure ratio of the short support rods, then the number of short support rods is increased, and the additional number of short support rods Rd is calculated as, Rd=Lx / (Lc / 2), Rd is rounded up, Lx=[1-(Ps2-P2) / Ps2]×Lc, where Rd is the additional number of short support rods, Lx is the corrected spacing, and Lc is the initial support spacing of the support device. Rd short support rods are added on both sides of the determined support device, and the length of each added short support rod is equal to the length of the short support rods in the support device, and they are evenly distributed between the two support devices;

[0072] Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

[0073] In this embodiment, the set initial support spacing is affected by factors such as the material, weight, concrete density, and cavity volume of the prefabricated wall, and should be set specifically based on actual conditions. Generally, the set initial support spacing is 1.5 meters, and the specific setting also needs to be adjusted based on the actual wall material, weight, concrete density, and cavity volume; the setting of the standard pressure of the short support rod is affected by factors such as the terrain around the construction site, the height of the prefabricated wall, the thickness of the prefabricated wall, the material of the wall, and the concrete density, and should be set specifically based on actual conditions. Generally, the set standard pressure of the short support rod is 4875 Newtons, and the specific setting also needs to be adjusted based on the actual height of the prefabricated wall, the thickness of the prefabricated wall, the material of the wall, and the concrete density, which will not be repeated here.

[0074] The adjustment method is further determined by judging the real-time pressure of the short support rod. When the short support rod meets the support standard, only the long support rod needs to be adjusted and the number of long support rods needs to be increased. When the short support rod does not meet the support standard, the pressure excess ratio of the support rod and the short support rod is judged. If the pressure excess ratio of the long support rod is less than that of the short support rod, it indicates that the bottom is severely tilted and the length of the short support rod needs to be increased to improve its support force on the prefabricated wall. The adjustment method can be determined in time by comparing the forces at the two places to ensure the accuracy of the position of the prefabricated wall.

[0075] Specifically, the first pressure sensor is arranged on the fixed ring between the long support rod and the prefabricated wall to detect the real-time pressure of the long support rod. The second pressure sensor is arranged on the fixed ring between the short support rod and the prefabricated wall to detect the real-time pressure of the short support rod. The inclination sensor is arranged on the prefabricated wall, and the distance from the bottom of the board / ground is four-fifths of the height of the prefabricated wall to detect the real-time inclination angle of the prefabricated wall.

[0076] Specifically, the two ends of the support rod should be fixed to the wall and floor or the ground respectively. The initial distance between the long support rod and the bottom of the slab or the ground is 2 / 3 of the height of the prefabricated wall, and the initial distance between the short support rod and the bottom of the slab is 1 / 5 of the height of the prefabricated wall.

[0077] See also Figure 3 As shown, it is a flow chart of installing a prefabricated wall according to an embodiment of the present invention, wherein step S2 includes:

[0078] Step S21, measuring and setting floor plane control lines and elevation control lines;

[0079] Step S22: Check the position and verticality of the steel bars reserved for this floor through the plane control line and make adjustments to ensure the accuracy of the steel bar position;

[0080] Step S23: Before the prefabricated wall panels are hoisted, shims and adjustable bolts / nuts are installed at the base of the prefabricated wall so that the top elevation meets the bottom elevation requirement for the prefabricated wall panels.

[0081] Step S24: Install extruded boards on site for blocking. The extruded boards should be installed on the upper part of the sandwich wall insulation.

[0082] See also Figure 4 As shown, it is a flowchart of checking and adjusting after installing a prefabricated wall according to an embodiment of the present invention. In the step S3, after the prefabricated wall is installed, its installation position, installation elevation and verticality are checked and adjusted, as follows:

[0083] Step S31, correcting the horizontal position of the parallel prefabricated wall, correcting the position of the prefabricated wall according to the prefabricated wall position line popped up on the floor surface, and adjusting the deviation with a crowbar;

[0084] Step S32, correcting the horizontal position of the vertical prefabricated wall, and adjusting the base of the wall panel using the short support rod to control the horizontal position of the wall panel;

[0085] Step S33, correcting the verticality of the prefabricated wall. After the horizontal position of the prefabricated wall is adjusted, the verticality of the wall is adjusted by adjusting the horizontal displacement of the top of the prefabricated wall using the long support rod.

[0086] Step S34, use a level to check the level. If it is found that the bottom of the prefabricated wall is not level, use a ruler to check again. If there is still a vertical deviation, use a tower crane to add or remove spacers until it is level.

[0087] By checking and adjusting the installation position, installation elevation and verticality of the prefabricated wall, it is ensured that the prefabricated wall is in the correct position during installation.

[0088] Specifically, in step S4, the vibrating rod insertion points are evenly arranged, and the vibrating rod is vertically inserted into the insertion point concrete at a position of 0.05-0.1m. The concrete is the lower layer concrete that has not yet initially set. After insertion, the vibrating rod is vibrated in the concrete, and each insertion point is vibrated to make the concrete uniformly compacted; the prefabricated wall cavity remains stationary for 12 hours after the concrete is poured. The temporary fixing measures are removed after the post-poured concrete reaches 100% strength.

[0089] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0090] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A prefabricated wall cavity casting construction method, characterized in that: The following steps are included: Step S1: pre-embed positioning steel bars, determine the installation position of the prefabricated wall, insert the positioning steel bars at the installation position and fix them with concrete, insert guide angle steels on one side of the positioning steel bars according to the thickness of the prefabricated wall, and fix the guide angle steels to the floor or ground at the installation position with ground nails; Step S2: Install the prefabricated wall. Lift the prefabricated wall with a lifting tool and move the prefabricated wall so that its positioning edge enters the inner angle groove of the guide angle steel. Control the lifting tool to lower the prefabricated wall so that the embedded positioning steel bar is inserted into the limiting hole at the bottom of the prefabricated wall and calibrated. Step S3, installing several supporting devices on one side of the prefabricated wall to support the prefabricated wall, and installing detection devices on the prefabricated wall and the supporting devices, wherein the supporting devices include a long support rod, a short support rod, a U-shaped bracket and a fixing ring, and the detection device includes a first pressure sensor for detecting the real-time pressure of the long support rod, a second pressure sensor for detecting the real-time pressure of the short support rod, and an inclination sensor for detecting the real-time inclination angle of the prefabricated wall; Step S4: placing a steel cage in the cavity of the prefabricated wall, pouring concrete into the cavity of the prefabricated wall, inserting a vibrating rod into the concrete in the cavity of the prefabricated wall, and starting a vibrating device to vibrate until the cavity pouring of the prefabricated wall is completed; Step S5, monitoring the real-time inclination angle of the prefabricated wall and the real-time pressures of the long support rod and the short support rod, obtaining the real-time pressure of the long support rod when the real-time inclination angle is between the first preset angle and the second preset angle, and when the real-time pressure Ps1 of the long support rod exceeds the standard pressure P1 of the long support rod, judging the real-time pressure of the short support rod and determining an adjustment method, and when the real-time pressure Ps2 of the short support rod exceeds the standard pressure P2 of the short support rod, calculating the excess pressure ratios of the long support rod and the short support rod, and judging and determining an adjustment method; The adjustment method includes adjusting the length of the long support rod, increasing the number of long support rods, increasing the length of the short support rods, or increasing the number of short support rods.

2. The prefabricated wall cavity casting construction method according to claim 1, characterized in that: In step S5, when the real-time inclination angle of the prefabricated wall is greater than the second preset angle, the length of the long support rod is adjusted, the U-shaped bracket located on the floor or the ground is loosened, and the long support rod is slowly pushed toward the prefabricated wall. When the real-time inclination angle of the prefabricated wall is less than the first preset angle, the pushing is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened.

3. The prefabricated wall cavity casting construction method according to claim 1, characterized in that: In step S5, under the second preset condition, when the real-time pressure of the short support rod does not exceed the standard pressure of the short support rod, the short support rod meets the support standard, and the number of long support rods on the prefabricated wall is increased. The increased number of long support rods Rz is calculated as Rz=Lx / (Lc / 2), Lx=[1-(Ps1-P1) / Ps1]×Lc, where Rz is the increased number of long support rods, Rz is rounded up, Lx is the corrected spacing, and Lc is the initial support spacing of the support device. Rz long support rods are respectively added on both sides of the determined support device, and the length of each added long support rod is equal to the length of the long support rods in the support device, and the long support rods are evenly distributed between the two support devices. Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

4. The prefabricated wall cavity casting construction method according to claim 3, characterized in that: In step S5, under the second preset condition, when the excess pressure ratio of the long support rod is less than the excess pressure ratio of the short support rod, the length of the short support rod is increased, the U-shaped bracket on the floor or the ground is loosened, and the short support rod is slowly pushed toward the prefabricated wall. When the real-time pressure of the short support rod does not exceed the standard pressure of the short support rod, the pushing is stopped, the U-shaped bracket is fixed, and the fixing bolts are tightened; Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

5. The prefabricated wall cavity casting construction method according to claim 4, characterized in that: In step S5, under the second preset condition, when the excess pressure ratio of the long support rods is greater than or equal to the excess pressure ratio of the short support rods, the number of short support rods on the prefabricated wall is increased, and the increased number of short support rods Rd is calculated as Rd=Lx / (Lc / 2), where Rd is rounded up to the integer Lx=[1-(Ps2-P2) / Ps2]×Lc, where Rd is the increased number of short support rods, Lx is the corrected spacing, and Lc is the initial support spacing of the support device. Rd short support rods are respectively added on both sides of the determined support device, with the length of each added short support rod being equal to the length of the short support rods in the support device and being evenly distributed between the two support devices. Among them, the second preset condition is that the real-time inclination angle of the prefabricated wall is between the first preset angle and the second preset angle and the real-time pressure of the long support rod has exceeded the standard pressure of the long support rod.

6. The prefabricated wall cavity casting construction method according to claim 5, characterized in that: The first pressure sensor is arranged on the fixed ring between the long support rod and the prefabricated wall to detect the real-time pressure of the long support rod. The second pressure sensor is arranged on the fixed ring between the short support rod and the prefabricated wall to detect the real-time pressure of the short support rod. The inclination sensor is arranged on the prefabricated wall, and the distance from the bottom of the board / ground is four-fifths of the height of the prefabricated wall to detect the real-time inclination angle of the prefabricated wall.

7. A prefabricated wall cavity casting construction method according to claim 1, characterized in that: The two ends of the support rod should be fixed to the prefabricated wall and floor or ground respectively. The initial distance between the long support rod and the bottom of the slab or the ground is 2 / 3 of the height of the prefabricated wall, and the initial distance between the short support rod and the bottom of the slab is 1 / 5 of the height of the prefabricated wall.

8. The prefabricated wall cavity casting construction method according to claim 1, characterized in that: In said step S2, Step S21, measuring and setting floor plane control lines and elevation control lines; Step S22: Check the position and verticality of the steel bars reserved for this floor through the plane control line and make adjustments to ensure the accuracy of the steel bar position; Step S23: Before the prefabricated wall panels are hoisted, shims and adjustable bolts / nuts are installed at the base of the prefabricated wall so that the top elevation meets the bottom elevation requirement for the prefabricated wall panels. Step S24: Install extruded boards on site for blocking. The extruded boards should be installed on the upper part of the sandwich wall insulation.

9. The prefabricated wall cavity casting construction method according to claim 1, characterized in that: The step S3 includes checking and adjusting the installation position, installation elevation and verticality of the prefabricated wall after installation, as follows: Step S31, correcting the horizontal position of the parallel prefabricated wall, correcting the position of the prefabricated wall according to the prefabricated wall position line popped up on the floor surface, and adjusting the deviation with a crowbar; Step S32, correcting the horizontal position of the vertical prefabricated wall, and adjusting the base of the wall panel using the short support rod to control the horizontal position of the wall panel; Step S33, correcting the verticality of the prefabricated wall. After the horizontal position of the prefabricated wall is adjusted, the verticality of the wall is adjusted by adjusting the horizontal displacement of the top of the prefabricated wall using the long support rod. Step S34, use a level to check the level. If it is found that the bottom of the prefabricated wall is not level, use a ruler to check again. If there is still a vertical deviation, use a tower crane to add or remove spacers until it is level.

10. A prefabricated wall cavity casting construction method according to claim 1, characterized in that: In step S4, the vibrating rod insertion points are evenly arranged, and the vibrating rod is vertically inserted into the insertion point concrete at a position of 0.05-0.1m. The concrete is the lower layer concrete that has not yet initially set. After insertion, the vibrating rod is vibrated in the concrete, and each insertion point is vibrated to make the concrete uniformly vibrated; the prefabricated wall cavity remains stationary for 12 hours after the concrete is poured. The temporary fixing measures are removed after the post-poured concrete reaches 100% strength.

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