A bearing quick installation device and a method for installing a prefabricated bridge bearing using the same

Abstract

A support quick installation device includes a pre-embedded foundation plate and a locking adjustment plate movably installed around the pre-embedded foundation plate, wherein the pre-embedded foundation plate is connected with a U-shaped steel bar on the back, and the installation surface is provided with internal threaded holes arranged in a rectangular array, and the inner side of the locking adjustment plate is provided with an L-shaped end head, and the locking adjustment plate is provided with a U-shaped opening groove with a groove length not less than the spacing between two adjacent internal threaded holes, and the spacing between two adjacent U-shaped opening grooves is a multiple of the spacing between two adjacent internal threaded holes; a transverse waist-shaped hole is provided between two adjacent vertical U-shaped grooves; and the method of installing the support using the quick installation device includes: prefabricating a pad, processing a support bottom plate or a top plate, pouring the pre-embedded foundation plate, the pre-embedded pad, installing the support, hoisting a prefabricated beam, installing the locking adjustment plate, locking the pre-embedded foundation plate, and tightening the locking adjustment plate to complete the installation. The quick installation device has a compact structure and a wide range of applications. The method of installing the support using it is simple and quick, and the connection with the support is safe and reliable.

Description

Technical Field

[0001] The invention relates to an installation device and an installation method for bridge and building structure bearings, and in particular to a bearing rapid installation device and a method for installing a prefabricated bridge bearing using the same. Background Art

[0002] With the vigorous development of bridge construction in my country, the construction environment of bridges has been paid more and more attention by the government, owners, designers and construction units, especially in urban bridge construction. The fully prefabricated bridge construction technology that has gradually developed and matured can not only control the quality of the project well, but also speed up the construction speed and reduce on-site pollution. At the same time, it also meets the development requirements of a low-carbon and harmonious society, and will be a set of efficient, low-carbon and environmentally friendly bridge construction technology; the fully prefabricated bridge construction technology effectively solves the drawbacks of on-site construction of concrete structures and greatly shortens the construction period of on-site construction, but also puts forward the requirement of rapid installation for the supporting bridge bearings; prefabricated bridges are mainly installed in an assembled manner. The installation of the bearing is to first connect the bearing to the prefabricated beam, and reserve a larger hole on the pad of the pier in advance, and then perform the post-casting process. After the beam is erected to the pier, the bearing is connected to the pad by welding or conventional bolts.

[0003] The main problems with traditional installation methods are:

[0004] 1. During the installation process, special equipment is required to adjust and support the beam body, and the top beam force can only be unloaded after the mortar poured later reaches a certain strength after a long period of time;

[0005] 2. The installation method of the support and the beam or pier: (1) If welding is used, there is a small operating space, which is not only difficult to meet the high quality requirements of the on-site welds, but also difficult to replace later. In addition, the support may overheat during welding and damage the internal structure of the support; (2) Although conventional bolt connections are convenient for installation and replacement, there is a problem of difficulty in hole alignment. Because the multiple support bolt holes on a beam pass through the length of the beam body, thermal expansion and contraction, etc., the error is amplified. The bolt holes with millimeter-level accuracy are difficult to align with the bolt holes reserved on the pier. Temporary hole matching is necessary, which is time-consuming and labor-intensive and cannot meet the needs of rapid installation;

[0006] 3. In addition, for ordinary bridge bearings and building bearings, no major structural changes are required on the various bearing structures during installation, so the traditional installation method also has the problem of not being able to be installed quickly. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a simple, economical and practical bearing rapid installation device and a method for installing a prefabricated bridge bearing using the same, so as to overcome the above-mentioned deficiencies in the prior art.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: a support quick installation device, including a pre-embedded foundation plate and a locking adjustment plate, the back of the pre-embedded foundation plate is connected with a U-shaped steel bar, and the locking adjustment plate is movably installed on the four sides of the installation surface of the pre-embedded foundation plate by bolts;

[0009] The mounting surface of the embedded base plate is provided with internal threaded holes arranged in a rectangular array, and the spacing L0 between two adjacent internal threaded holes is equal; the locking adjustment plates have the same structure, and are all rectangular steel blocks, and the upper end of the inner side surface is provided with an L-shaped end head, and the height h from the bottom surface of the rectangular steel block to the L-shaped end head corresponds to the thickness H of the support bottom plate or the support top plate to be installed in conjunction; the locking adjustment plate is provided with a U-shaped opening groove passing through its top and bottom surfaces, and the opening of the U-shaped opening groove faces inward, and the side of the locking adjustment plate is provided with a transverse waist-shaped hole passing through both sides thereof, and the transverse waist-shaped hole is arranged between two adjacent U-shaped opening grooves, and the groove length direction of the U-shaped opening groove is perpendicular to the length direction of the locking adjustment plate, and the center line of the transverse waist-shaped hole is parallel to the groove length direction of the U-shaped opening groove; the groove length of the U-shaped opening groove is not less than the spacing L0 between two adjacent internal threaded holes on the embedded base plate, and the spacing L1 between two adjacent U-shaped opening grooves is an integral multiple of the spacing L0 between two adjacent internal threaded holes.

[0010] Its further technical solution is: the internal threaded hole on the mounting surface of the embedded base plate is either a threaded blind hole or a threaded through hole. When the internal threaded hole is a threaded through hole, an end panel covering the threaded through hole is connected to the back of the embedded base plate, and the U-shaped steel bar is connected to the end panel.

[0011] Another technical solution is: the method is a method for installing a precast beam support using the above-mentioned support quick installation device, including positive installation and reverse installation. The positive installation means that the support quick installation device is arranged on the bridge pier, the support top plate of the precast beam support is connected to the bottom surface of the precast beam, and the support bottom plate of the precast beam support is connected to the support quick installation device. The reverse installation means that the support quick installation device is arranged on the bottom surface of the precast beam, the support top plate of the precast beam support is connected to the support quick installation device, and the support bottom plate of the precast beam support is connected to the bridge pier.

[0012] (I) The method for installing the precast beam support in position includes the following steps:

[0013] S1 prefabricates the pads corresponding to the size of the precast beam supports:

[0014] The pad described in S11 is a type I pad: that is, the pad is provided with sleeve bolts connected to the support top plate of the precast beam support;

[0015] The pad described in S12 may be a type II pad: that is, the pad is provided with threaded holes connected to the support top plate of the precast beam support, and the top surface of the pad is connected with embedded steel bars;

[0016] S2 Processing the support base plate: Open transverse threaded holes Ⅰ at equal distances on the four sides of the support base plate of the prefabricated beam support to be installed;

[0017] S3 Casting of embedded foundation plate: Cast the embedded foundation plate on the pier according to the position determined by the design drawing. The U-shaped steel bars on the back of the embedded foundation plate need to be extended into the pier structure and connected with the steel bars of the pier, so that it can be prefabricated into one piece with the pier;

[0018] S4 embedded pad: embed the pad on the bottom surface of the precast beam according to the position determined by the design drawing, so that it is connected with the precast beam body;

[0019] S41 If the pad is a Type I pad, the sleeve bolts on the top surface of the pad shall extend into the precast beam structure and connect with the steel bars of the precast beam body, so that it is prefabricated into one piece with the precast beam;

[0020] S42 If the pad is a Type II pad, the embedded steel bars on the top surface of the pad shall extend into the precast beam structure and be connected to the steel bars of the precast beam body, so that it is prefabricated as one with the precast beam;

[0021] S5 Install the support: Connect the support top plate of the precast beam support with the pad on the bottom of the precast beam:

[0022] S6 hoisting precast beams: adjust the beam position and then drop it steadily, so that the support bottom plate of the precast beam support falls within the range of the embedded foundation plate;

[0023] S7 Install the locking adjustment plate and the prefabricated beam support for temporary positioning; install the locking adjustment plate around the support base plate of the prefabricated beam support, so that the L-shaped end of the locking adjustment plate is buckled on the support base plate, and then gently screw the transverse fastening bolt through the transverse waist-shaped hole of the locking adjustment plate into the transverse threaded hole Ⅰ of the support base plate to temporarily position the locking adjustment plate and the support base plate;

[0024] S8 adjusts the locking adjustment plate and locks it with the embedded foundation plate: move the locking adjustment plate left and right or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening groove corresponds to the hole position of the internal thread hole on the embedded foundation plate, and then passes the vertical fastening bolt through the U-shaped opening groove and screws it into the internal thread hole to lock the locking adjustment plate with the embedded foundation plate;

[0025] S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support bottom plate to complete the installation of the precast beam support;

[0026] (II) The method for reverse installation of precast beam supports includes the following steps:

[0027] S1 prefabricates the pads corresponding to the size of the precast beam supports:

[0028] The pad described in S11 is a type I pad: the pad is provided with sleeve bolts connected to the support bottom plate of the precast beam support;

[0029] The pad described in S12 may be a type II pad: the pad is provided with threaded holes connected to the support bottom plate of the precast beam support, and the bottom surface of the pad is connected with embedded steel bars;

[0030] S2 Processing the support top plate: Open transverse threaded holes II at equal distances on the four sides of the support top plate of the precast beam support to be installed;

[0031] S3 Casting of embedded foundation slab: Casting of embedded foundation slab on the bottom surface of the bridge according to the position determined by the design drawings; the U-shaped steel bars on the back of the embedded foundation slab need to be extended into the precast beam structure and connected with the steel bars of the precast beam body, so that it is prefabricated into one piece with the precast beam;

[0032] S4 pre-embedded pad: pre-embed the pad on the pier according to the position determined by the design drawing, so that it is connected with the pier as a whole;

[0033] S41 If the pad is a Type I pad, the sleeve bolts on the pad shall be inserted into the pier structure and connected to the steel bars of the pier, so that it can be prefabricated into one piece with the pier;

[0034] S42 If the pad is a Type II pad, the embedded steel bars on the bottom of the pad shall be extended into the pier structure and connected with the steel bars of the pier, so that it can be prefabricated into one piece with the pier;

[0035] S5 Install the support: Connect the support base plate of the precast beam support with the pad on the pier surface:

[0036] S6 hoisting precast beams: adjust the beam position and then drop it steadily, so that the embedded foundation plate on the bottom of the precast beam falls on the top of the support top plate of the precast beam support to cover it;

[0037] S7 Install the locking adjustment plate and the prefabricated beam support for temporary positioning; install the locking adjustment plate around the support top plate of the prefabricated beam support, so that the L-shaped end of the locking adjustment plate is buckled on the support top plate, and then gently screw the transverse fastening bolt through the transverse waist-shaped hole of the locking adjustment plate into the transverse threaded hole II of the support top plate to temporarily position the locking adjustment plate and the support top plate;

[0038] S8 adjusts the locking adjustment plate and locks it with the embedded foundation plate: move the locking adjustment plate left and right or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening groove corresponds to the hole position of the internal thread hole on the embedded foundation plate, and then passes the vertical fastening bolt through the U-shaped opening groove and screws it into the internal thread hole to lock the locking adjustment plate with the embedded foundation plate;

[0039] S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support top plate to complete the installation of the precast beam support.

[0040] Due to the adoption of the above technical solution, a bearing quick installation device and a method for installing a prefabricated bridge bearing using the same according to the present invention have the following beneficial effects:

[0041] The quick installation device has a compact structure, reasonable design, simple and reliable use, and is suitable for all kinds of steel bearings and rubber bearings of various bridges and buildings. When the bearings are in place for beam erection and other working conditions, a quick installation device for bearings can be used to achieve quick connection and quick installation of the bearings:

[0042] 1. By embedding the embedded foundation plate into the prefabricated pier or beam structure, the quick installation device can be used to make the support body an assembled part during on-site installation. After the support is in place, the locking adjustment plate and bolts can be used to connect and tighten the support with the embedded foundation plate immediately, making the installation convenient and quick;

[0043] 2. Regardless of the position of the support on the embedded foundation plate, each U-shaped opening groove of the locking adjustment plate can be aligned with at least one internal thread hole on the embedded foundation plate, and each transverse waist-shaped hole of the locking adjustment plate can be aligned with at least one transverse thread hole on the side of the support bottom plate or top plate. Then, use vertical fastening bolts and transverse fastening bolts to lock and connect the support bottom plate or top plate, embedded foundation plate, and locking adjustment plate into one body to form a force-bearing whole;

[0044] 3. The quick installation device allows the support to fall within the preset adjustment range on the embedded foundation plate, and the range is designed based on the general construction error or the predetermined construction error. Therefore, the support installation does not need to consider too high precision (no need to install the upper and lower holes with millimeter-level precision), which greatly reduces the construction difficulty;

[0045] 4. A certain number of U-shaped steel bars are set on the back of the embedded foundation plate. The number of U-shaped steel bars is set according to the specific stress conditions and firmly welded together to ensure that the device can transmit the horizontal force from the upper part; the locking adjustment plate is equipped with an L-shaped end, which can press the side of the support bottom plate or top plate to resist the overturning caused by the horizontal force and ensure the safety of the support;

[0046] 5. The support is connected to the beam or pier with bolts, thus solving the problems of small operating space for welding, high quality requirements for on-site welds, difficulty in later replacement, and possible damage to the internal parts of the support due to overheating of the support during welding.

[0047] The technical features of a bearing rapid installation device and a method for installing a prefabricated bridge bearing using the same according to the present invention are further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1-2 This is a schematic diagram of the structure of a quick mounting device for a support according to the present invention:

[0049] Figure 1 For the main view, Figure 2 It is a top view;

[0050] Figure 3 to Figure 5 This is a schematic diagram of the locking adjustment plate structure:

[0051] Figure 3 For the main view, Figure 4 is the left view, Figure 5 It is a three-dimensional effect picture;

[0052] Figure 6-7 This is the structural diagram of the embedded foundation plate:

[0053] Figure 6 For the main view, Figure 7 It is a top view;

[0054] Figure 8 to Figure 10 This is a schematic diagram of the support base plate structure with transverse threaded holes:

[0055] Figure 8 For the main view, Fig. 9 is a top view, Fig.10 It is the left view;

[0056] Fig.11 It is a schematic diagram of the connection structure between the locking adjustment plate and the support base plate;

[0057] Figure 12-13 A state diagram of installing a prefabricated beam support using a support quick installation device of the present invention:

[0058] Fig.12 It is installed in the correct position, that is, the quick installation device of the support is installed on the bridge pier.

[0059] Fig.13 It is reverse installation, that is, the bearing quick installation device is installed on the bottom surface of the bridge;

[0060] In the figure:

[0061] 1—embedded foundation plate, 101—internal threaded hole, 2—locking adjustment plate, 201—U-shaped opening groove, 202—transverse waist-shaped hole, 203—L-shaped end, 3—U-shaped steel bar, 4—vertical fastening bolts, 5—transverse fastening bolts, 6—support, 7—support bottom plate, 71—transverse threaded hole I, 8—beam body, 9—bridge pier, 10—support top plate, 1001—transverse threaded hole II, 11—shim plate. DETAILED DESCRIPTION

[0062] Embodiment 1

[0063] A support quick installation device, comprising an embedded foundation plate 1 and a locking adjustment plate 2, wherein the embedded foundation plate 1 is a square plate, the back of which is connected to a U-shaped steel bar 3 by welding, and four locking adjustment plates are respectively movably installed on the four sides of the embedded foundation plate installation surface by bolts, two locking adjustment plates are arranged on the front and rear sides of the embedded foundation plate, and two locking adjustment plates are arranged on the left and right sides of the embedded foundation plate; the installation surface of the embedded foundation plate is provided with internal threaded holes 101 arranged in a rectangular array, and the spacing L0 between two adjacent internal threaded holes is equal (the horizontal spacing and the vertical spacing are both L0);

[0064] The locking adjustment plate 2 has the same structure, and is a rectangular steel block, and an L-shaped end 203 is provided at the upper end of the inner side surface thereof. The height h from the bottom surface of the rectangular steel block to the L-shaped end corresponds to the thickness H of the support bottom plate or the support top plate to be installed, and h is slightly smaller than the thickness H of the support bottom plate or the support top plate, so that when the locking adjustment plate is locked with the embedded foundation plate, the L-shaped end of the locking adjustment plate can effectively press the support bottom plate or the support top plate;

[0065] The locking adjustment plate 2 is provided with a U-shaped opening groove 201 passing through its top and bottom surfaces, the opening of the U-shaped opening groove faces inward, and the side of the locking adjustment plate 2 is provided with a transverse waist-shaped hole 202 passing through its two sides, the transverse waist-shaped hole is arranged between two adjacent U-shaped opening grooves, the groove length direction of the U-shaped opening groove is perpendicular to the length direction of the locking adjustment plate, and the center line of the transverse waist-shaped hole is parallel to the groove length direction of the U-shaped opening groove; the groove length of the U-shaped opening groove is not less than the spacing L0 between two adjacent internal threaded holes on the embedded base plate, so that when the locking adjustment plate is adjusted along the groove length direction of the U-shaped opening groove, at least one internal threaded hole can be connected within the groove length of one U-shaped opening groove; the spacing L1 between two adjacent U-shaped opening grooves is an integral multiple of the spacing L0 between two adjacent internal threaded holes, so that when the locking adjustment plate is adjusted along its length direction, one internal threaded hole can be connected to each U-shaped opening groove.

[0066] The internal threaded holes on the mounting surface of the embedded foundation plate are either threaded blind holes or threaded through holes. When the internal threaded holes are threaded through holes, an end panel that covers all threaded through holes is connected to the back of the embedded foundation plate, and the U-shaped steel bar 3 is connected to the end panel.

[0067] In the above embodiment, the spacing between adjacent internal threaded holes on the embedded foundation plate can be determined according to the size of the support. If the spacing is smaller, the number of threaded holes will be larger, but more fastening bolts can be arranged on one side of the support, and the force is better; if the spacing is larger and the number of internal threaded holes is smaller, fewer fastening bolts can be arranged on one side of the support, but the number of fastening bolts is reduced; the minimum number of bolts can be calculated on one side in combination with the support specifications, that is, (vertical + horizontal fastening bolts) to equal the size of the bottom (top) plate of the branch seat, as the spacing between the internal threaded holes; the number of matrix circles of the internal threaded holes should meet the installation error requirements. If the installation error is set to be larger, the more matrices there are, the larger the embedded foundation plate will be. Generally, the number of internal threaded holes is 16 to 999.

[0068] The spacing between two adjacent vertical U-shaped grooves on the locking adjustment plate should be designed in combination with the structural width of the transverse waist-shaped holes. The number of the vertical U-shaped grooves 201 is generally 2 to 99.

[0069] The spacing between two adjacent transverse waist-shaped holes on the locking adjustment plate is determined according to the number of bolts required to bear the force on the bottom (top) plate of the support. Generally, the number of the transverse waist-shaped holes 202 is 2 to 99.

[0070] Embodiment 2

[0071] A method for quickly installing a support, the method is a method for installing a precast beam support using a support quick installation device described in Example 1, and the support is installed in the correct position. The correct position installation means that the support quick installation device is arranged on a bridge pier, the support top plate of the precast beam support is connected to the bottom surface of the precast beam, and the support bottom plate of the precast beam support is connected to the support quick installation device. The method for installing the precast beam support in the correct position includes the following steps:

[0072] S1 prefabricates the pad 11 corresponding to the size of the precast beam support:

[0073] The pad described in S11 is a type I pad: that is, the pad is provided with sleeve bolts connected to the support top plate of the precast beam support;

[0074] The pad described in S12 may be a type II pad: that is, the pad is provided with threaded holes connected to the support top plate of the precast beam support, and the top surface of the pad is connected with embedded steel bars;

[0075] S2 Processing the support base plate: Open transverse threaded holes Ⅰ71 at equal distances on the four sides of the support base plate 7 of the prefabricated beam support to be installed;

[0076] S3 pouring the embedded foundation plate: pouring the embedded foundation plate 1 on the pier according to the position determined by the design drawing. The U-shaped steel bars 3 on the back of the embedded foundation plate need to extend into the pier structure and connect with the steel bars of the pier, so that it is prefabricated into one piece with the pier;

[0077] S4 embedded pad: embedded pad 11 on the bottom surface of precast beam according to the position determined by design drawing, so that it is connected with the precast beam body;

[0078] S41 If the pad is a Type I pad, the sleeve bolts on the top surface of the pad shall extend into the precast beam structure and connect with the steel bars of the precast beam body, so that it is prefabricated into one piece with the precast beam;

[0079] S42 If the pad is a Type II pad, the embedded steel bars on the top surface of the pad shall extend into the precast beam structure and be connected to the steel bars of the precast beam body, so that it is prefabricated as one with the precast beam;

[0080] S5 Install the support: Connect the support top plate 10 of the precast beam support with the pad 11 on the bottom surface of the precast beam:

[0081] S6 hoisting precast beams: adjust the beam position and then drop it steadily, so that the support bottom plate of the precast beam support falls within the range of the embedded foundation plate;

[0082] S7: Install the locking adjustment plate and the prefabricated beam support for temporary positioning; install the locking adjustment plate 2 around the support base plate 7 of the prefabricated beam support, so that the L-shaped end 203 of the locking adjustment plate is buckled on the support base plate, and then the transverse fastening bolt 5 is passed through the transverse waist-shaped hole 202 of the locking adjustment plate and gently screwed into the transverse threaded hole 71 of the support base plate to temporarily position the locking adjustment plate and the support base plate;

[0083] S8 adjusts the locking adjustment plate and locks it with the embedded foundation plate: moves the locking adjustment plate left and right or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening slot 201 corresponds to the hole position of the internal threaded hole 101 on the embedded foundation plate, and then passes the vertical fastening bolt 4 through the U-shaped opening slot 201 and screws it into the internal threaded hole 101 to lock the locking adjustment plate with the embedded foundation plate;

[0084] S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support bottom plate to complete the installation of the precast beam support;

[0085] Embodiment 3

[0086] A method for quickly installing a support, the method is a method for installing a precast beam support using a support quick installation device described in Example 1, and reverse installation, which means that the support quick installation device is arranged on the bottom surface of the precast beam, the support top plate of the precast beam support is connected to the support quick installation device, and the support bottom plate of the precast beam support is connected to the bridge pier. The method for reverse installation of the precast beam support includes the following steps:

[0087] S1 prefabricates the pad 11 corresponding to the size of the precast beam support:

[0088] The pad described in S11 is a type I pad: the pad is provided with sleeve bolts connected to the support bottom plate of the precast beam support;

[0089] The pad described in S12 may be a type II pad: the pad is provided with threaded holes connected to the support bottom plate of the precast beam support, and the bottom surface of the pad is connected with embedded steel bars;

[0090] S2 Processing the support top plate: Opening transverse threaded holes II1001 at equal distances on the four sides of the support top plate 10 of the precast beam support to be installed;

[0091] S3 pouring the embedded foundation plate: pouring the embedded foundation plate 1 on the bottom surface of the bridge according to the position determined by the design drawing; the U-shaped steel bars 3 on the back of the embedded foundation plate need to extend into the precast beam structure and connect with the steel bars of the precast beam body, so that it is prefabricated with the precast beam as a whole;

[0092] S4 pre-embedded pad: pre-embed the pad 11 on the pier according to the position determined by the design drawing, so that it is connected to the pier as a whole;

[0093] S41 If the pad is a Type I pad, the sleeve bolts on the pad shall be inserted into the pier structure and connected to the steel bars of the pier, so that it can be prefabricated into one piece with the pier;

[0094] S42 If the pad is a Type II pad, the embedded steel bars on the bottom of the pad shall be extended into the pier structure and connected with the steel bars of the pier, so that it can be prefabricated into one piece with the pier;

[0095] S5 Install the support: Connect the support base plate 7 of the precast beam support with the pad 11 on the pier surface:

[0096] S6: hoist the precast beam: adjust the position of the beam body and then drop it steadily, so that the embedded foundation plate (1) on the bottom surface of the precast beam falls on the top of the support top plate 10 of the precast beam support to cover it;

[0097] S7 installs the locking adjustment plate and the prefabricated beam support for temporary positioning; installs the locking adjustment plate 2 around the support top plate of the prefabricated beam support, so that the L-shaped end 203 of the locking adjustment plate is buckled on the support top plate, and then passes the transverse waist-shaped hole 202 of the locking adjustment plate and gently screws it into the transverse threaded hole II1001 of the support top plate, and temporarily positions the locking adjustment plate and the support top plate;

[0098] S8 adjusts the locking adjustment plate and locks it with the embedded foundation plate: moves the locking adjustment plate left and right or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening slot 201 corresponds to the hole position of the internal threaded hole 101 on the embedded foundation plate, and then passes the vertical fastening bolt 4 through the U-shaped opening slot 201 and screws it into the internal threaded hole 101 to lock the locking adjustment plate with the embedded foundation plate;

[0099] S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support top plate to complete the installation of the precast beam support.

[0100] As a variation of the above-mentioned third embodiment, the reverse installation can also be performed by directly installing the precast beam support processed in the first embodiment and having the transverse threaded hole Ⅰ71 on the support bottom plate upside down, that is, the support quick installation device is arranged on the bottom surface of the precast beam, the support bottom plate of the precast beam support is connected to the support quick installation device, and the support top plate of the precast beam support is connected to the bridge pier.

[0101] Note: The above embodiment is applicable to the installation of square prefabricated beam supports.

Claims

1. A quick mounting device for a support, characterized in that: The device comprises a pre-embedded foundation plate (1) and a locking adjustment plate (2), wherein a U-shaped steel bar (3) is connected to the back of the pre-embedded foundation plate, and the locking adjustment plate is movably mounted on the four sides of the mounting surface of the pre-embedded foundation plate by means of bolts; the mounting surface of the pre-embedded foundation plate is provided with internal threaded holes (101) arranged in a rectangular array, and the spacing L0 between two adjacent internal threaded holes is equal; The locking adjustment plates (2) have the same structure and are all rectangular steel blocks. The upper end of the inner side surface thereof is provided with an L-shaped end head (203). The height h from the bottom surface of the rectangular steel block to the L-shaped end head corresponds to the thickness H of the support bottom plate or the support top plate to be installed in cooperation. The locking adjustment plate is provided with a U-shaped opening groove (201) passing through the top and bottom surfaces thereof, the opening of the U-shaped opening groove faces inward, and the side surface of the locking adjustment plate is provided with a transverse waist-shaped hole (202) passing through both sides thereof. The transverse waist-shaped hole is provided between two adjacent U-shaped opening grooves, the groove length direction of the U-shaped opening groove is perpendicular to the length direction of the locking adjustment plate, and the center line of the transverse waist-shaped hole is parallel to the groove length direction of the U-shaped opening groove; the groove length of the U-shaped opening groove is not less than the spacing L0 between two adjacent internal threaded holes on the embedded base plate, and the spacing L1 between two adjacent U-shaped opening grooves is an integral multiple of the spacing L0 between two adjacent internal threaded holes.

2. A quick mounting device for a support according to claim 1, characterized in that: The internal threaded hole on the mounting surface of the embedded base plate is either a threaded blind hole or a threaded through hole. When the internal threaded hole is a threaded through hole, an end panel covering the threaded through hole is connected to the back of the embedded base plate, and the U-shaped steel bar (3) is connected to the end panel.

3. A quick installation method for a support, characterized in that: The method is a method for installing a precast beam support using a support quick installation device according to claim 2, including positive installation and reverse installation. The positive installation means that the support quick installation device is arranged on the pier, the support top plate of the precast beam support is connected to the bottom surface of the precast beam, and the support bottom plate of the precast beam support is connected to the support quick installation device. The reverse installation means that the support quick installation device is arranged on the bottom surface of the precast beam, the support top plate of the precast beam support is connected to the support quick installation device, and the support bottom plate of the precast beam support is connected to the pier. (I) The method for installing the precast beam support in position includes the following steps: S1 prefabricates the pad (11) corresponding to the size of the precast beam support: The pad described in S11 is a type I pad: that is, the pad is provided with sleeve bolts connected to the support top plate of the precast beam support; The pad described in S12 may be a type II pad: that is, the pad is provided with threaded holes connected to the support top plate of the precast beam support, and the top surface of the pad is connected with embedded steel bars; S2 Processing the support base plate: Opening transverse threaded holes I (71) at equal distances on four sides of the support base plate (7) of the precast beam support to be installed; S3 pouring the embedded foundation plate: pouring the embedded foundation plate (1) on the pier according to the position determined by the design drawing, and the U-shaped steel bars (3) on the back of the embedded foundation plate need to extend into the pier structure and connect with the steel bars of the pier, so that it is prefabricated into one piece with the pier; S4 pre-embedded pad: pre-embed the pad (11) on the bottom surface of the precast beam according to the position determined by the design drawing, so that it is connected to the precast beam body as a whole; S41 If the pad is a Type I pad, the sleeve bolts on the top surface of the pad shall extend into the precast beam structure and connect with the steel bars of the precast beam body, so that it is prefabricated into one piece with the precast beam; S42 If the pad is a Type II pad, the embedded steel bars on the top surface of the pad shall extend into the precast beam structure and be connected to the steel bars of the precast beam body, so that it is prefabricated as one with the precast beam; S5 Install the support: Connect the support top plate (10) of the precast beam support to the pad (11) on the bottom surface of the precast beam: S6 hoisting precast beams: adjust the beam position and then drop it steadily, so that the support bottom plate of the precast beam support falls within the range of the embedded foundation plate; S7: temporarily positioning the locking adjustment plate and the prefabricated beam support; installing the locking adjustment plate (2) around the support base plate (7) of the prefabricated beam support, so that the L-shaped end (203) of the locking adjustment plate is buckled on the support base plate, and then the transverse fastening bolt (5) is passed through the transverse waist-shaped hole (202) of the locking adjustment plate and gently screwed into the transverse threaded hole I (71) of the support base plate, so as to temporarily position the locking adjustment plate and the support base plate; S8: adjusting the locking adjustment plate and locking it with the embedded base plate: moving the locking adjustment plate leftward or rightward or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening slot (201) corresponds to the hole position of the internal threaded hole (101) on the embedded base plate, and then passing the vertical fastening bolt (4) through the U-shaped opening slot (201) and screwing it into the internal threaded hole (101), so as to lock the locking adjustment plate with the embedded base plate; S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support bottom plate to complete the installation of the precast beam support; (II) The method for reverse installation of precast beam supports includes the following steps: S1 prefabricates the pad (11) corresponding to the size of the precast beam support: The pad described in S11 is a type I pad: the pad is provided with sleeve bolts connected to the support bottom plate of the precast beam support; The pad described in S12 may be a type II pad: the pad is provided with threaded holes connected to the support bottom plate of the precast beam support, and the bottom surface of the pad is connected with embedded steel bars; S2 Processing the support top plate: Opening transverse threaded holes II (1001) at equal distances on four sides of the support top plate (10) of the precast beam support to be installed; S3 pouring the embedded foundation plate: pouring the embedded foundation plate (1) on the bottom surface of the bridge according to the position determined by the design drawing; the U-shaped steel bars (3) on the back of the embedded foundation plate need to extend into the precast beam structure and connect with the steel bars of the precast beam body, so that it is prefabricated into one piece with the precast beam; S4 pre-embedded pad: pre-embed the pad (11) on the pier at the position determined in the design drawing so that it is connected to the pier as a whole; S41 If the pad is a Type I pad, the sleeve bolts on the pad shall be inserted into the pier structure and connected to the steel bars of the pier, so that it can be prefabricated into one piece with the pier; S42 If the pad is a Type II pad, the embedded steel bars on the bottom of the pad shall be extended into the pier structure and connected with the steel bars of the pier, so that it can be prefabricated into one piece with the pier; S5 Install the support: Connect the support base plate (7) of the precast beam support to the pad (11) on the pier surface: S6: hoist the precast beam: adjust the position of the beam body and then drop it steadily, so that the embedded foundation plate (1) on the bottom surface of the precast beam falls on the top of the support top plate (10) of the precast beam support to cover it; S7 installs the locking adjustment plate and the precast beam support for temporary positioning; installs the locking adjustment plate (2) around the support top plate of the precast beam support, so that the L-shaped end (203) of the locking adjustment plate is buckled on the support top plate, and then passes the transverse waist-shaped hole (202) of the locking adjustment plate and gently screws it into the transverse threaded hole II (1001) of the support top plate, and temporarily positions the locking adjustment plate and the support top plate; S8: adjusting the locking adjustment plate and locking it with the embedded base plate: moving the locking adjustment plate leftward or rightward or forward and backward to adjust the horizontal position of the locking adjustment plate, so that the slot position of the U-shaped opening slot (201) corresponds to the hole position of the internal threaded hole (101) on the embedded base plate, and then passing the vertical fastening bolt (4) through the U-shaped opening slot (201) and screwing it into the internal threaded hole (101), so as to lock the locking adjustment plate with the embedded base plate; S9 Tighten the transverse fastening bolts to complete the installation of the precast beam support: Tighten the transverse fastening bolts to lock the locking adjustment plate and the support top plate to complete the installation of the precast beam support.

Images