Combined prefabricated T-beam steel pedestal

Abstract

A modular precast T-beam steel pedestal includes a pedestal body and a bottom formwork support installed at the bottom of the pedestal body. The pedestal body includes several splicing modules connected end-to-end along its length, and also includes a first adjusting block and a second adjusting block. The first adjusting block is detachably connected to the splicing modules at the strain-section positions of the pedestal body to adjust the width at the strain-section positions. The second adjusting block is detachably connected to the splicing modules at both ends of the pedestal body to adjust the width at the ends. By changing the number of splicing modules, the precast requirements of T-beams of different lengths can be met. This setup effectively saves on site and equipment costs, has a high reusability rate, and improves construction efficiency. To accommodate the different shapes of the T-beams at different locations, especially at strain-section sections and ends, the steel pedestal is specifically equipped with first and second adjusting blocks to achieve width adjustment, matching the width changes of the T-beams at different locations.

Description

Technical Field

[0001] This utility model relates to the field of T-beam prefabrication technology, and in particular to a combined prefabricated T-beam steel platform. Background Technology

[0002] T-beams are common precast concrete structural members, named for their T-shaped cross-section. They are widely used in bridge engineering to support bridge deck structures and withstand vehicle and environmental loads. The steel pedestal is the supporting structure for precast T-beams; its main function is to provide a stable support platform, ensuring the T-beams maintain their correct shape and position during precasting.

[0003] The existing steel pedestals have a fixed total length, which cannot meet the prefabrication requirements of T-beams of different lengths. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a combined precast T-beam steel platform.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A modular precast T-beam steel pedestal includes a pedestal body and a bottom formwork support installed at the bottom of the pedestal body. The pedestal body includes several splicing modules connected end to end along its own length, and also includes a first adjusting block and a second adjusting block. The first adjusting block is detachably connected to the splicing module at the strain-section position of the pedestal body for adjusting the width of the strain-section position. The second adjusting block is detachably connected to the splicing module at both ends of the pedestal body for adjusting the width of the two ends.

[0007] Furthermore, the first adjusting block is a trapezoidal adjusting block with an inclined surface, and the second adjusting block is a square adjusting block.

[0008] Furthermore, the pedestal body includes a middle section, and the two ends of the middle section are provided with a variable section, a first region and a second region from the inside to the outside along the length direction. The first region and the second region constitute the end. The top end face of the first region is higher than the top end face of the second region. There is a height difference between the first region and the second region to form a mounting groove. The mounting groove is used for the installation of a pre-embedded steel plate.

[0009] Furthermore, the mounting groove can also be detachably fitted with a bamboo plywood, the groove depth of which is equal to the thickness of the bamboo plywood, and the bamboo plywood is used to cooperate with the embedded steel plate to fill the mounting groove.

[0010] Furthermore, the bottom formwork support includes several I-beams and / or several cylindrical piers.

[0011] Furthermore, the bottom of the two second regions is provided with the I-beams or several cylindrical supports, or the bottom of the two second regions is provided with height-adjustable support seats.

[0012] Furthermore, a dropping block is provided between the first region and the second region, and a height adjustment support is provided at the bottom of the dropping block. The top end face of the dropping block is flush with or lower than the top end face of the second region.

[0013] Furthermore, a limiting block is provided at one end of the first region and / or the second region near the unloading block, the limiting block being used to prevent the top end face of the unloading block from being higher than the top end face of the second region.

[0014] Furthermore, a grout-stop strip is provided inside the channel steel of the pedestal body or at the contact position between the pedestal body and the template.

[0015] Furthermore, each of the splicing modules is provided with through holes for laying water pipes and cables.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model proposes a combined precast T-beam steel platform, comprising a platform body and a bottom formwork support installed at the bottom of the platform body. The platform body includes several splicing modules connected end-to-end along its length, and also includes a first adjusting block and a second adjusting block. The first adjusting block is detachably connected to the splicing module at the strain gauge section of the platform body to adjust the width of the strain gauge section. The second adjusting block is detachably connected to the splicing modules at both ends of the platform body to adjust the width of the ends. By increasing or decreasing the number of splicing modules, the precast requirements of T-beams of different lengths can be met. This setup can effectively save site and equipment costs, has a high reusability rate, and improves construction efficiency. To accommodate the different shapes of the T-beams at different locations, especially at strain gauge sections and ends, the steel platform is specially equipped with a first adjusting block and a second adjusting block to achieve width adjustment, allowing for flexible adjustment of the platform's width to match the width changes of the T-beams at different locations.

[0018] 2. This utility model proposes a combined precast T-beam steel platform, in which a drop block is provided between the first and second areas. A height-adjustable support is provided at the bottom of the drop block, and the top end face of the drop block is flush with or lower than the top end face of the second area. The height-adjustable support allows for height adjustment of the drop block. When hoisting is required, the height-adjustable support lowers the drop block, disengaging the end of the T-beam from the support of the drop block, thus creating sufficient space for hoisting operations by cranes or other hoisting equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view (top view) of a combined precast T-beam steel platform according to the present invention;

[0021] Figure 2 This is a front view (main view) of a combined precast T-beam steel platform according to the present invention.

[0022] Figure 3 for Figure 1 Enlarged view of point A;

[0023] Figure 4 for Figure 2 Enlarged view of point B;

[0024] Figure 5 This is a schematic diagram of the first adjusting block;

[0025] Figure 6 This is a schematic diagram of the second adjusting block;

[0026] Figure 7 This is a schematic diagram of the splicing modules and I-beams;

[0027] Figure 8 This is a schematic diagram of the unloading block and height adjustment support.

[0028] In the diagram, 10 is the pedestal body; 101 is the splicing module; 1011 is the through hole; 201 is the first adjusting block; 202 is the second adjusting block; 301 is the middle section; 302 is the variable section; 303 is the first area; 304 is the second area; 305 is the mounting groove; 401 is the I-beam; 402 is the cylindrical pier; 501 is the unloading block; 502 is the height adjustment support; 5021 is the screw; 5022 is the lower support plate; 5023 is the reinforcing plate; 5024 is the nut; 5025 is the sleeve; 5026 is the upper support plate; 5027 is the handheld part; and 503 is the limiting block. Detailed Implementation

[0029] The following is combined Figure 1-8 This utility model will be described in detail.

[0030] A modular precast T-beam steel pedestal includes a pedestal body 10 and a bottom formwork support installed at the bottom of the pedestal body 10. The pedestal body 10 includes several splicing modules 101 connected end to end along its own length, and also includes a first adjusting block 201 and a second adjusting block 202. The first adjusting block 201 is detachably connected to the splicing module 101 at the position of the strain gauge section 302 of the pedestal body 10, and is used to adjust the width of the strain gauge section 302. The second adjusting block 202 is detachably connected to the splicing module 101 at both ends of the pedestal body 10, and is used to adjust the width of the two ends. By increasing or decreasing the number of splicing modules 101 to meet the prefabrication requirements of T-beams of different lengths, this setup can effectively save site and equipment costs, has a high reusability rate of the steel platform, and improves construction efficiency. To accommodate the different shapes of the T-beams at different locations, especially at the variable section 302 and the end section, the steel platform is specially equipped with a first adjustment block 201 and a second adjustment block 202 to achieve the width adjustment function, which can flexibly adjust the width of the platform to match the width changes of the T-beams at different locations.

[0031] Specifically, each splicing module 101 is made of steel. The lengths of each splicing module 101 can be the same or different. They are not welded together but can be detachably connected by bolts to allow for flexible adjustment of the length of the steel platform. The length of the steel platform can be adjusted by adding or removing splicing modules 101 to adapt to the length of the T-beam. This facilitates the construction of precast T-beams with large variations in beam length, not only reducing the number of precast platforms and saving costs, but also adapting to construction conditions with large variations in beam length through the splicing modules 101. The adjustment method is simple and easy to operate, which can greatly improve the construction progress of beam yards with large variations in precast beam length.

[0032] In this embodiment, the first adjusting block 201 is a trapezoidal adjusting block with an inclined surface, and the second adjusting block 202 is a square adjusting block. The first adjusting block 201 and the second adjusting block 202 are detachably connected to both ends of the base body 10 along their own width direction by bolts.

[0033] In this embodiment, the pedestal body 10 includes a central part 301. The two ends of the central part 301 are provided with a variable section 302, a first region 303 and a second region 304 from the inside to the outside along the length direction. The first region 303 and the second region 304 constitute the end. The top end face of the first region 303 is higher than the top end face of the second region 304. There is a height difference between the first region 303 and the second region 304 to form a mounting groove 305. The mounting groove 305 is used for the installation of the pre-embedded steel plate. Furthermore, the mounting groove 305 can also be detachably installed with a bamboo plywood (not shown in the figure). The groove depth of the mounting groove 305 is equal to the thickness of the bamboo plywood. The bamboo plywood is used to cooperate with the pre-embedded steel plate to fill the mounting groove 305.

[0034] Specifically, such as Figure 3As shown, the cross-sectional areas of the splicing modules 101 at the three locations—the middle section 301, the variable section 302, and the end—are different, with the splicing module 101 at the variable section 302 having the smallest cross-sectional area. For example, the difference between a 20-meter and a 30-meter steel platform lies in the number of splicing modules 101. If a 20-meter steel platform has already been installed and you want to change it to a 30-meter steel platform, assuming the total length of the variable section 302 and the end splicing module 101 is 5.5 meters, then you can continue to install a 4.5-meter splicing module 101 outwards from either the left or right end (called the variable end), and then install the variable section 302 plus the end with a total length of 5.5 meters. The original splicing module 101 at the variable section 302 plus the end at the variable end does not need to be replaced; you can simply fill the original mounting groove 305 at the variable end with bamboo plywood. Similarly, if the 30-meter steel platform needs to be changed to a 20-meter steel platform, then the 10-meter splicing module 101 should be removed.

[0035] The mounting groove 305 is located above the second area 304. The length of the mounting groove 305 is greater than the length of the embedded steel plate. The specific installation position of the embedded steel plate in the mounting groove 305 depends on the length of the T-beam. The longer the T-beam, the further out the embedded steel plate is, i.e., the further away from the center 301. The positions in the mounting groove 305 that are not covered by the embedded steel plate, i.e., the empty positions on the left and right ends of the embedded steel plate, are filled with bamboo plywood. This achieves a fine adjustment of the length of the steel platform. Because changing the number of splicing modules 101 at either end achieves a larger length adjustment of the steel platform, this fine adjustment of the length allows the steel platform to better adapt to T-beams of different lengths.

[0036] In this embodiment, the bottom formwork support includes several I-beams 401 and / or several cylindrical piers 402. Specifically, the I-beams 401 and cylindrical piers 402 can be alternately arranged, or either I-beams 401 or cylindrical piers 402 can be uniformly arranged. The I-beams 401 facilitate the insertion of tie rods, while the cylindrical piers 402 have better load-bearing performance at the same price. The position of the bottom I-beams is optimized to avoid interference with the tie rods of various beam-type outer formworks. Since the steel platform needs to adapt to various types of T-beam outer formworks, the positions of the tie rods of these outer formworks are different. In order to avoid conflicts with all tie rods, the positions of all tie rods are deduced, and the bottom I-beams of the steel platform are arranged to avoid all tie rods, or holes are opened on the cylindrical piers 402.

[0037] In this embodiment, the bottom of the two second regions 304 is provided with I-beams 401 or several cylindrical blocks 402, or the bottom of the two second regions 304 is provided with height adjustment support seats 502.

[0038] In this embodiment, as Figure 4 and Figure 8As shown, a drop block 501 is provided between the first region 303 and the second region 304. A height-adjustable support 502 is provided at the bottom of the drop block 501. The top surface of the drop block 501 is flush with or lower than the top surface of the second region 304. The height-adjustable support 502 allows the drop block 501 to be height-adjusted. When hoisting is required, the height-adjustable support 502 lowers the drop block 501, disengaging the end of the T-beam from the support of the drop block 501, thus freeing up sufficient space for hoisting operations by cranes or other hoisting equipment.

[0039] Specifically, the unloading block 501 can be considered as part of the second area 304. When not being hoisted, the unloading block 501 and the second area 304 have the same function, and the area above the unloading block 501 is considered as part of the mounting groove 305. The unloading block 501 and its bottom height adjustment support 502 can be placed, detachably connected, or fixedly connected. In the initial state, after the T-beam is prefabricated, the weight of the T-beam is borne by the steel platform and the unloading block 501. At this time, the top end face of the unloading block 501 is flush with the top end face of the second area 304. When hoisting is required, the height of the height adjustment support 502 is lowered, so that the position of the unloading block 501 is lowered accordingly, thereby creating enough space between the first area 303 and the second area 304, i.e., the original location of the unloading block 501. This space is the hoisting operation area.

[0040] The height adjustment support base 502 provided at the bottom of the two second areas 304 and the bottom of the unloading block 501 has the following structure: The height adjustment support base 502 includes a screw 5021, a lower support plate 5022 fixedly connected to the bottom of the screw 5021, and two triangular reinforcing plates 5023 symmetrically arranged between the screw 5021 and the lower support plate 5022; a nut 5024 threadedly engaged with the screw 5021 is sleeved on the outer periphery of the screw 5021, and a sleeved part is fixedly connected to the top of the nut 5024. The sleeve 5025 at the top of the rod 5021 has an upper support plate 5026 at its top for abutting against the bottom of the unloading block 501. A handle 5027 extends outward from the outer side of the nut 5024 for easy rotation. When the height of the height-adjustable support 502 needs to be adjusted, rotating the nut 5024 causes it to move up or down along the screw 5021, raising or lowering the upper support plate 5026, thereby changing the height position of the unloading block 501. This height-adjustable support 502 is existing technology in this field. Besides the above structure, the height-adjustable support 502 can be replaced with other structures or devices, such as a hydraulic jack, a telescopic motor, or a combination of a wedge block and screw 5021, as long as the height position of the unloading block 501 can be adjusted.

[0041] In this embodiment, a limiting block 503 is provided at one end of the first region 303 and / or the second region 304 near the unloading block 501. The limiting block 503 is used to prevent the top end face of the unloading block 501 from being higher than the top end face of the second region 304. Specifically, the limiting block 503 is located above the unloading block 501. When the top end face of the unloading block 501 is flush with the top end face of the second region 304, the limiting block 503 prevents the unloading block 501 from continuing to rise. Alternatively, the limiting block 503 can be provided at the top of the unloading block 501. A groove is provided at one end of the first region 303 and / or the second region 304 near the unloading block 501, and the limiting block 503 cooperates with the groove to achieve the limiting.

[0042] In this embodiment, a grout-stop strip (not shown in the figure) is provided inside the channel steel of the pedestal body 10 or at the contact position between the pedestal body 10 and the template. Specifically, the template refers to the bottom mold and outer mold used in the T-beam prefabrication process. To ensure that the connection between the template and the steel pedestal does not leak grout, grout-stop strips are provided at the contact positions between the template and the steel pedestal on both sides. The grout-stop strip is set along its entire length. After the template is installed with tie bolts, the grout-stop strip is squeezed to seal the gaps in the side molds of the prefabricated beam. The grout-stop strip can effectively prevent concrete grout from seeping out of the gaps. The grout-stop strip is usually made of materials such as rubber and polyethylene foam, which have good elasticity, wear resistance and water resistance. Alternatively, the grout-stop strip is pressed into the channel steel embedded on both sides of the pedestal. The grout-stop strip is squeezed by the template to make it fit tightly with the channel steel, thereby preventing grout leakage.

[0043] In this embodiment, each splicing module 101 is provided with a through hole 1011 for laying water pipes and cables.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A modular precast T-beam steel pedestal, characterized by, The system includes a platform body and a bottom mold support installed at the bottom of the platform body. The platform body includes several splicing modules connected end to end along its own length direction, and also includes a first adjusting block and a second adjusting block. The first adjusting block is detachably connected to the splicing module at the strain-section position of the platform body and is used to adjust the width of the strain-section position. The second adjusting block is detachably connected to the splicing module at both ends of the platform body and is used to adjust the width of the two ends.

2. A modular precast T-beam steel pedestal as claimed in claim 1, wherein, The first adjusting block is a trapezoidal adjusting block with an inclined surface, and the second adjusting block is a square adjusting block.

3. A combined steel bed for precast T-beam according to claim 1 or 2, characterized in that, The pedestal body includes a middle section, and at both ends of the middle section, from the inside to the outside, there are variable sections, a first region and a second region. The first region and the second region constitute the end. The top end face of the first region is higher than the top end face of the second region. There is a height difference between the first region and the second region to form a mounting groove. The mounting groove is used for the installation of pre-embedded steel plates.

4. A modular precast T-beam steel pedestal as claimed in claim 3, wherein, The mounting groove can also be detachably fitted with a bamboo plywood. The depth of the mounting groove is equal to the thickness of the bamboo plywood. The bamboo plywood is used to cooperate with the embedded steel plate to fill the mounting groove.

5. The modular precast T-beam steel pedestal of claim 3 wherein, The bottom formwork support includes several I-beams and / or several cylindrical piers.

6. A modular precast T-beam steel pedestal as claimed in claim 5, wherein, The bottom of the two second regions is provided with the I-beams or several cylindrical piers, or the bottom of the two second regions is provided with height-adjustable support seats.

7. The modular precast T-beam steel pedestal of claim 3 wherein, A drop block is provided between the first region and the second region. The bottom of the drop block is provided with a height adjustment support. The top end face of the drop block is flush with or lower than the top end face of the second region.

8. A modular precast T-beam steel pedestal as claimed in claim 7, wherein, The first region and / or the second region are provided with a limiting block at one end near the unloading block, the limiting block being used to prevent the top end face of the unloading block from being higher than the top end face of the second region.

9. The modular precast T-beam steel pedestal of claim 1 wherein, A grout-stop strip is provided inside the channel steel of the pedestal body or at the contact position between the pedestal body and the template.

10. The modular precast T-beam steel pedestal of claim 1 wherein, Each of the splicing modules is provided with through holes for laying water pipes and cables.

Images