Cover beam support working platform and bottom die integrated structure and construction method thereof

Abstract

The invention relates to the technical field of bridge construction, and particularly discloses a bent cap support working platform and bottom die integrated structure and a construction method thereof, a bottom die framework and a distributive girder are combined into a whole, construction materials are saved, a working platform and a bottom die are integrated, the independent installation procedure of the distributive girder and the installation procedure of a working platform pedal are eliminated, and the construction efficiency is improved. The working platform does not need to uncover a platform pedal, no vacancy is reserved, the site is safe and attractive, the bolts are symmetrically inserted into the bottom die framework to bear concrete side pressure, and the risk that objects fall when the working platform pedal is turned over and a pull rod is installed below a bottom die is avoided; according to the technology, the integrated bottom die can be directly turned over to be used for other cover beams with different stand column distances, and other integrated bottom dies can also be turned over to be used for other cover beams with the width slightly smaller than that of an original cover beam besides a pier column surrounding template.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to an integrated structure of a cap beam support working platform and a bottom formwork and a construction method thereof. Background Art

[0002] The cap beam of the bridge is generally constructed by cast-in-place non-ground support. First, the support force support device (through rod or clamp) is installed on the pier column, and then the unloading device (mechanical sand top or sand top) is installed on the support device and its vertex elevation is adjusted to meet the requirements. Then, the cap beam support main beam is installed on the unloading device, and the distribution beam is laid on the main beam. Then, the bottom template consistent with the width of the cap beam is laid on the distribution beam and the plane position is adjusted. Then, the working platform pedal and guardrail are laid around the bottom template. Then, the cap beam reinforcement (including prestressed system, if any) is installed on the bottom template. After the cap beam reinforcement (including prestressed system, if any) is installed, the cap beam reinforcement (including prestressed system, if any) is installed. The side formwork can be installed after qualified acceptance. To install the side formwork, you need to first remove the 30cm wide platform pedal on the edge of the bottom formwork of the cap beam to expose the distribution beam, support the side formwork on the distribution beam, wrap the bottom formwork and temporarily fix it, then vertically install the steel shoulder pole for fastening the side formwork outside the side formwork (with an interval of about 1.5m), install the tie rod at the top and bottom of the pole, adjust the side form line, tighten the tie rod nuts, and pour the cap beam concrete after qualified formwork acceptance. Usually, the length of the steel shoulder pole exceeds the top and bottom of the side formwork by 10 to 15cm, the bottom tie rod passes from under the bottom formwork (distribution beam gap), and the top tie rod is higher than the side formwork.

[0003] There are still some limitations in the existing technical construction process:

[0004] The non-ground-type cap beam support is set up, the distribution beam is laid on the main beam, and then the bottom formwork with the same width as the cap beam is laid on the distribution beam, and then the working platform pedals and guardrails are laid around the bottom formwork. During the construction process of this process, the distribution beam is placed individually, and the distribution beams need to be temporarily tied and fixed to the main beam one by one, which is time-consuming and labor-intensive, and the spacing between the distribution beams often does not meet the design requirements. To install the tie rod at the bottom of the side formwork, the working platform pedal needs to be uncovered first, and then the tie rod needs to be passed from the bottom of the bottom formwork to the opposite side. The labor intensity of the construction personnel is relatively high. After the side formwork is installed, there is a large gap in the working platform, which not only damages the civilized image of the site, but also has a greater risk of falling objects. The distribution beam is superimposed on the bottom formwork, the material consumption is large, the construction cost is high, the bottom formwork width is fixed, and the cost of modifying the bottom formwork when it is used for cap beams of other widths is high.

[0005] The purpose of the invention is to provide an integrated structure of a cap beam support working platform and a bottom mold to solve the problems mentioned in the above background technology. Summary of the invention

[0006] To achieve the above-mentioned purpose, the invention provides an integrated structure of a cap beam support working platform and a bottom mold, including a cap beam support, an integrated bottom mold, an angled bottom mold, and a cap beam side mold system. The integrated bottom mold is installed on the cap beam support, the angled bottom mold is installed on the integrated bottom molds at both ends of the cap beam, and the cap beam side mold system is installed on the integrated bottom mold for casting the cap beam body.

[0007] The cap beam support is composed of a hoop, a support support and a support main beam. The support main beam is installed on both sides of the pier column. A hoop is provided on the outer wall of the pier column. The support support is installed on the top of the hoop and connected to the bottom of the support main beam.

[0008] The integrated bottom formwork includes the bottom formwork surrounding the pier column, the flat bottom formwork, and the non-standard bottom formwork. The integrated bottom formwork is installed on the top of the main beam of the bracket. The width of the bottom formwork surrounding the pier column is half of the flat bottom formwork. The bottom formwork surrounding the pier column and the flat bottom formwork are both composed of a working platform pedal, a bottom formwork frame, and a bottom formwork panel. The bottom formwork surrounding the pier column is provided with a semicircular notch matching the radius of the pier column.

[0009] The cap beam side formwork system includes locking foot square steel tubes, latches, side formwork, two tie rods, and supporting steel tubes. The side formwork is installed on the top surface of the integrated bottom formwork. The top of the side formwork is fixed with two tie rods and supporting steel tubes, and the bottom is fixed with locking foot square steel tubes and latches.

[0010] The angled bottom formwork is installed on the integrated flat bottom formwork at both ends of the cap beam and is clamped between the side forms of the cap beam.

[0011] As a further improvement of the present invention, the bracket support is a sand top, which is installed on the clamp, and the top of the sand top is connected to the bottom of the bracket main beam. A pair of drawing rods is also connected between the two bracket main beams. The pair of drawing rods passes through the two bracket main beams, and the outer walls of the two bracket main beams are limited and fixed by limiting nuts.

[0012] As a further improvement of the present invention, the side formwork is symmetrically installed on the bottom formwork panel of the integrated bottom formwork, the second drawing rod is installed between the top ends of the symmetrical side formworks, and the outside of the second drawing rod is also sleeved with a supporting steel pipe, and the two ends of the supporting steel pipe are tightly fixed to the inner wall of the side formwork.

[0013] As a further improvement of the present invention, the integrated bottom mold frame is composed of rectangular steel pipes and square steel pipes. The rectangular steel pipes are symmetrically arranged on both sides of the bottom mold panel and the working platform pedal, and the square steel pipes are evenly distributed between the symmetrical rectangular steel pipes. Pin holes are symmetrically opened on the square steel pipes according to the design width of the cap beam body. The width of the bottom mold panel is 15 cm wider than the design width of the cap beam body.

[0014] As a further improvement of the present invention, guardrail sockets are welded at both ends of the rectangular square tube, and the guardrail sockets are used to install safety guardrails.

[0015] As a further improvement of the present invention, the locking foot square steel tube is arranged on the outer wall of the bottom end of the side template, and a pin is provided on the side of the locking foot square steel tube away from the side template. The pin is inserted into the pin hole on the bottom template frame to tighten and fix the locking foot square steel tube.

[0016] A construction method for an integrated structure of a cap beam support working platform and a bottom mold comprises the following steps:

[0017] a. First, design the cap beam support, bottom formwork system and cap beam side formwork system that meet the requirements according to the cap beam size. All steel structures are designed and processed as prefabricated components. The integrated bottom formwork is processed into a standard bottom formwork with a width of 1m to 2m to meet the turnover use. In addition, a non-standard bottom formwork with a suitable width is configured according to the pier column spacing. Different non-standard width bottom formworks are configured for different pier column spacings;

[0018] b. Install the cap beam support, install the clamp at the appropriate height of the pier column, and make the clamp on both sides of the cap beam axis parallel, then install the support on the clamp, and then install the main beam of the cap beam support on the top of the support and on both sides of the pier column, then install a tie rod between the two support main beams to limit and fix the two support main beams;

[0019] c. Make an integrated bottom mold and an angled bottom mold. Weld the working platform pedal, bottom mold panel and distribution beam into one. The distribution beam is the bottom mold skeleton, which realizes the integration of the cap beam bracket and the bottom mold system. The bottom mold skeleton adopts rectangular steel pipes and square steel pipes. The bottom mold skeleton model, spacing and bottom mold panel thickness must meet the stress and deformation requirements. The angled bottom mold plate is made according to conventional means;

[0020] d. Install the integrated formwork and the angled bottom formwork. Install the surrounding pier column bottom formwork and the flat bottom formwork on the bracket main beam in sequence. Install the non-standard bottom formwork between the surrounding pier column bottom formwork and the flat bottom formwork. Then, install the angled bottom formwork on the integrated flat bottom formwork at both ends of the cap beam according to the size of the cap beam.

[0021] e. Install the side formwork of the cap beam. After completing the installation of the cap beam reinforcement, measure and lay out on the bottom formwork panel of the integrated bottom formwork, draw the edge line of the cap beam, and the side formworks are supported on the integrated bottom formwork in sequence according to the drawn parts. Two tie rods are connected to the top of the symmetrical side formworks, and the outer walls of the tie rods are sleeved with supporting steel pipes. The symmetrical steel pipes are arranged between the symmetrical side formworks. Locking foot square steel pipes are installed at the bottom of the side formworks, and pins are inserted into the pin holes on the bottom formwork frame to tighten and fix the locking foot square steel pipes. The side formworks are controlled to be straight through the support of the side formworks at both ends by the bevel bottom formwork and the extrusion of the side formworks by the locking foot square steel pipes, and then the cap beam concrete is poured.

[0022] As a further improvement of the present invention, after the bracket support and the bracket main beam are installed, a pair of drawing rods are installed between the two bracket main beams. The pair of drawing rods passes through the two bracket main beams and is fixed to the two bracket main beams by limiting nuts.

[0023] As a further improvement of the present invention, in order to ensure that the bottom formwork system is symmetrically arranged along the axis of the cap beam, when installing the bottom formwork system, the first piece should be installed from the pier on one side to embrace the pier column bottom formwork, and the guiding function of the centering of the cylinder is used to ensure that the bottom formwork is centered. The bottom formwork hugging the pier column is laid flat against the pier column so that its straight edge is perpendicular to the support main beam, thereby satisfying the symmetrical arrangement along the axis of the cap beam. The subsequent integrated bottom formworks are installed in sequence and aligned with them. After the bottom formwork hugging the pier column at the other end is installed, the non-standard bottom formwork for filling the gap is installed.

[0024] As a further improvement of the present invention, after the integrated bottom mold is installed, safety guardrails are inserted into the guardrail sockets at both ends, the non-standard width gap is closed with a fence, and then the entire support platform is closed with a safety net.

[0025] Compared with the prior art, the invention has the following beneficial effects:

[0026] The present invention combines the bottom formwork frame and the distribution beam into one, which can save 25% of construction steel compared with traditional brackets and templates. The working platform is integrated with the bottom formwork, eliminating the distribution beam installation process and the work platform pedal installation process, which can speed up the construction progress. The work platform does not need to uncover the platform pedal, leaving no gaps, and the site is safe, neat and beautiful. The pins are symmetrically inserted on the bottom formwork frame (i.e. the distribution beam) to withstand the side pressure of the concrete, avoiding the risk of falling objects when opening the platform pedal and installing the tie rod from under the bottom formwork. This technical integrated bottom formwork can be directly used for other cap beams with different column spacings. In addition to the embracing pier column template, other bottom forms can also be used for other cap beams with a width slightly smaller than the original cap beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the present invention;

[0028] Figure 2 It is a top view of the connection between the bottom form system and the pier column of the present invention;

[0029] Figure 3 It is a schematic diagram of the bottom formwork structure of the embracing pier column of the present invention;

[0030] Figure 4 It is a schematic diagram of the flat bottom template structure of the present invention;

[0031] Figure 5 It is a side cross-sectional view of the present invention as a whole.

[0032] In the figure: 100, bracket support; 200, bracket main beam; 1, bottom formwork surrounding the pier; 2, flat bottom formwork; 3, non-standard bottom formwork; 4, bevel bottom formwork; 5, cap beam body; 501, clamp; 502, tie rod one; 111, bottom formwork panel; 112, working platform pedal; 113, rectangular steel pipe; 114, square steel pipe; 115, pin hole; 116, guardrail socket; 101, integrated bottom formwork; 103, safety guardrail; 104, locking square steel pipe; 105, latch; 106, side formwork; 107, tie rod two; 108, support steel pipe. DETAILED DESCRIPTION

[0033] To facilitate understanding of the invention, the invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the invention are given in the drawings, but the invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the invention more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the invention belongs. The terms used in the specification of the invention are only for the purpose of describing specific embodiments and are not intended to limit the invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0035] The invention is further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] See also Figure 1-5 The invention provides an integrated structure of a cap beam support working platform and a bottom mold, including a cap beam support, an integrated bottom mold 101, an angled bottom mold 4, and a cap beam side mold system. The integrated bottom mold 101 is installed on the cap beam support, the angled bottom mold 4 is installed on the integrated bottom mold 101 at both ends of the cap beam, and the cap beam side mold system is installed on the integrated bottom mold 101 for casting the cap beam body 5;

[0038] The cap beam support is composed of a hoop 501, a support support 100 and a support main beam 200. The support main beam 200 is installed on both sides of the pier column. A hoop 501 is provided on the outer wall of the pier column. The support support 100 is installed on the top of the hoop 501 and connected to the bottom of the support main beam 200.

[0039] The integrated bottom formwork 101 includes a bottom formwork 1 surrounding the pier column, a flat bottom formwork 2, and a non-standard bottom formwork 3. The integrated bottom formwork 101 is installed on the top of the support main beam 200. The width of the bottom formwork 1 surrounding the pier column is half of the flat bottom formwork 2. The bottom formwork 1 surrounding the pier column and the flat bottom formwork 2 are both composed of a working platform pedal 112, a bottom formwork frame, and a bottom formwork panel 111. The bottom formwork 1 surrounding the pier column is provided with a semicircular notch matching the radius of the pier column.

[0040] The cap beam side formwork system includes a locking foot square steel tube 104, a latch 105, a side formwork 106, a second tie rod 107, and a supporting steel tube 108. The side formwork 106 is installed on the top surface of the integrated bottom formwork 101. The second tie rod 107 and the supporting steel tube 108 are fixed on the top of the side formwork 106, and the locking foot square steel tube 104 and the latch 105 are fixed on the bottom.

[0041] The angled bottom formwork 4 is installed on the integrated flat bottom formwork 2 at both ends of the cap beam and is clamped between the side formworks 106 .

[0042] In this embodiment, the bottom formwork frame and the distribution beam are combined into one, which can save 25% of construction steel compared with the traditional cap beam bracket and bottom formwork process. The working platform and the bottom formwork are integrated, eliminating the binding work of the distribution beam and the main beam, reducing the process of installing the working platform pedal 112, and speeding up the construction progress. The working platform does not need to uncover the working platform pedal, leaving no gaps, and the site is safe and beautiful. The bottom formwork of this technology can be directly used for other cap beams with different column spacing. In addition to the embracing pier column formwork, other bottom formworks can also be used for other cap beams with a width slightly smaller than the original cap beam.

[0043] In this embodiment, Figure 1 As shown, the support 100 of the bracket is a sand top, which can be used to support the bracket main beam 200 during the cap beam construction to ensure that the bracket main beam 200 is at the designed elevation and facilitate the later mold lowering. The sand top is installed on the clamp 501, and a pair of wire drawing rods 502 are also connected between the two bracket main beams 200. The pair of wire drawing rods 502 pass through the two bracket main beams 200, and the two bracket main beams 200 are limited and fixed by limiting nuts to ensure the stability of the support system.

[0044] In this embodiment, Figure 2-5 As shown, the bottom mold frame includes a rectangular steel tube 113 and a square steel tube 114. The rectangular steel tube 113 is symmetrically arranged on both sides of the bottom mold panel 111 and the working platform pedal 112. The square steel tube 114 is evenly distributed between the symmetrical rectangular steel tubes 113. Pin holes 115 are symmetrically opened on the square steel tube 114 according to the design width of the cap beam body 5.

[0045] Guardrail sockets 116 are welded at both ends of the rectangular square tube. The guardrail sockets 116 are used to install the safety guardrail 103. The guardrail sockets 116 are provided to ensure the safety of workers during construction.

[0046] The width of the bottom mold panel 111 is 15 cm wider than the designed width of the cap beam body 5. The bottom outer wall of the side mold 106 is provided with a locking foot square steel tube 104. The locking foot square steel tube 104 is provided with a pin 105 on the side away from the side mold 106. The pin 105 is inserted into the pin hole 115 on the bottom mold frame to tighten and fix the locking foot square steel tube 104.

[0047] In this embodiment, the side formwork 106 is supported on the bottom formwork panel 111 of the integrated bottom formwork 101, and a tie rod 107 is installed on the top of the side formwork 106. The locking foot system is installed at the bottom of the side formwork 106 using the bottom formwork frame. A locking foot square steel pipe 104 is arranged on the outer wall of the bottom end of the side formwork 106, and pins 105 are symmetrically inserted on the bottom formwork frame (i.e., the distribution beam) to withstand the side pressure of the concrete, thereby avoiding the risk of falling objects when opening the working platform pedal 112 and installing the tie rod from under the bottom formwork, thereby improving the safety of construction.

[0048] like Figure 1-5 As shown, a construction method of an integrated structure of a cap beam support working platform and a bottom mold comprises the following steps:

[0049] a. First, design the cap beam support, bottom formwork system, and cap beam side formwork system that meet the requirements according to the cap beam size. All steel structures are designed and processed as prefabricated components. The integrated bottom formwork 101 plate is processed into a standard bottom formwork with a width of 1m to 2m to meet the turnover use. In addition, a non-standard bottom formwork 3 with a suitable width is configured according to the pier column spacing, and non-standard bottom formwork 3 with different widths is configured according to different pier column spacing.

[0050] b. Make an integrated bottom mold 101 and an angled bottom mold 4, weld the working platform pedal 112, bottom mold panel 111 and distribution beam into one, the distribution beam is the bottom mold frame, and the cap beam support platform and bottom mold system are integrated. The bottom mold frame uses rectangular steel pipes 113 and square steel pipes 114. The bottom mold frame model, spacing, and bottom mold panel 111 thickness must meet the force and deformation requirements. The angled bottom mold 4 plate is made according to conventional means.

[0051] c. Install the cap beam support, install the clamp 501 at an appropriate height of the pier, and make the support base of the clamp 501 on both sides of the cap beam axis, then install the support support (unloading) device 100 on the support base of the clamp 501, and then install two cap beam support main beams 200 on the top of the support support (unloading) device 100 and on both sides of the cap beam, and then install the wire drawing rod 502 between the two support main beams 200 to limit and fix the two support main beams 200;

[0052] d. Install the integrated bottom formwork 101 and the angled bottom formwork 4, install the bottom formwork 1 of the embracing pier column and the flat bottom formwork 2 on the bracket main beam 200 in sequence, install the non-standard bottom formwork 3 in the gap between the bottom formwork 1 of the embracing pier column and the flat bottom formwork 2, and then install the angled bottom formwork 4 on the flat bottom formwork 2 of the integrated bottom formwork 101 at both ends of the cap beam according to the size requirements of the cap beam;

[0053] e. Install the cap beam side formwork 106. After completing the installation of the cap beam reinforcement, measure, lay out and draw lines in the bottom formwork panel 111 area of ​​the integrated formwork. The side formwork 106 is supported on the integrated bottom formwork 101 in sequence according to the drawn lines. The top of the symmetrical side formwork 106 is connected with a pair of tension rods 107. The outer wall of the pair of tension rods is sleeved with a supporting steel pipe 108. The symmetrical steel pipes are arranged between the symmetrical side formworks 106. The locking foot square steel pipe 104 is installed on the outer side of the bottom of the side formwork 106. The pin 105 is inserted into the pin hole 115 of the integrated bottom formwork skeleton on the outer side of the locking foot square steel pipe 104. The locking foot square steel pipe 104 and the side formwork 106 are tightened and fixed by the pin 105, wherein the angled bottom formwork 4 supports the two ends of the side formwork 106, and then the cap beam concrete is poured.

[0054] Step d is to ensure that the bottom formwork system is symmetrically arranged along the axis of the cap beam. When installing the bottom formwork system, the first piece should be installed from the pier on one side to embrace the pier column bottom formwork 1. The guiding function of the centering of the cylinder is used to ensure that the bottom formwork is centered. The bottom formwork 1 that embraces the pier column is laid flat against the pier column so that its straight edge is vertical to the support main beam 200. This satisfies the symmetrical arrangement along the axis of the cap beam. Subsequent bottom formworks are installed in sequence and aligned with them. After the bottom formwork 1 that embraces the pier column is installed at the other end, the non-standard bottom formwork 3 that fills the gap is installed.

[0055] Step d: After the integrated bottom mold 101 is installed, the safety guardrails 103 are inserted into the guardrail sockets 116 at both ends of the integrated bottom mold 101, and then the non-standard width gap is closed with a fence, and then the entire support platform is closed with a safety net.

[0056] The above description of the invention in conjunction with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the protection scope of the invention.

Claims

1. The cap beam support working platform and bottom mold are integrated into a structure characterized by: The invention comprises a cap beam support, an integrated bottom form (101), an angled bottom form (4), and a cap beam side form system, wherein the integrated bottom form (101) is installed on the cap beam support, the angled bottom form (4) is installed on the integrated bottom form (101) at both ends of the cap beam, and the cap beam side form system is installed on the integrated bottom form (101) for casting the cap beam body (5); The cap beam support is composed of a hoop (501), a support support (100) and a support main beam (200). The support main beam (200) is installed on both sides of the pier column. A hoop (501) is provided on the outer wall of the pier column. The support support (100) is installed on the top of the hoop (501) and is connected to the bottom of the support main beam (200). The integrated bottom form (101) comprises a bottom form (1) surrounding the pier column, a flat bottom form (2), and a non-standard bottom form (3). The integrated bottom form (101) is installed on the top of the support main beam (200). The width of the bottom form (1) surrounding the pier column is half of the flat bottom form (2). Both the bottom form (1) surrounding the pier column and the flat bottom form (2) are composed of a working platform pedal (112), a bottom form frame, and a bottom form panel (111). The bottom form (1) surrounding the pier column is provided with a semicircular notch matching the radius of the pier column. The cap beam side formwork system includes a locking foot square steel tube (104), a latch (105), a side formwork (106), a pair of tie rods (107), and a pair of supporting steel tubes (108). The side formwork (106) is installed on the top surface of the integrated bottom formwork (101). The pair of tie rods (107) and the pair of supporting steel tubes (108) are fixed on the top of the side formwork (106). The locking foot square steel tube (104) and the latch (105) are fixed on the bottom. The angled bottom mold (4) is installed on the integrated flat bottom mold plates (2) at both ends of the cap beam and is clamped between the cap beam side molds (106).

2. The integrated structure of the cap beam support working platform and the bottom mold according to claim 1 is characterized in that: The bracket support (100) is a sand top, which is installed on the hoop (501). The top of the sand top is connected to the bottom of the bracket main beam (200). A pair of wire drawing rods (502) are also connected between the two bracket main beams (200). The pair of wire drawing rods (502) pass through the two bracket main beams (200) and limit and fix the outer walls of the two bracket main beams (200) through limiting nuts.

3. The integrated structure of the cap beam support working platform and the bottom mold according to claim 1 is characterized in that: The side template (106) is symmetrically installed on the bottom template panel (111) of the integrated bottom template (101), and the second drawing rod (107) is installed between the top ends of the symmetrical side templates (106). The outside of the second drawing rod (107) is also provided with a supporting steel pipe (108), and the two ends of the supporting steel pipe (108) are tightly fixed to the inner wall of the side template (106).

4. The integrated structure of the cap beam support working platform and the bottom mold according to claim 1 is characterized in that: The integrated bottom mold (101) skeleton is composed of rectangular steel tubes (113) and square steel tubes (114). The rectangular steel tubes (113) are symmetrically arranged on both sides of the bottom mold panel (111) and the working platform pedal (112). The square steel tubes (114) are evenly distributed between the symmetrical rectangular steel tubes (113). Pin holes (115) are symmetrically opened on the square steel tubes (114) according to the designed width of the cap beam body (5). The width of the bottom mold panel (111) is 15 cm wider than the designed width of the cap beam body (5).

5. The integrated structure of the cap beam support working platform and the bottom mold according to claim 4 is characterized in that: Guardrail sockets (116) are welded to both ends of the rectangular square tube, and the guardrail sockets (116) are used to install the safety guardrail (103).

6. The integrated structure of the cap beam support working platform and the bottom mold according to claim 3 is characterized in that: The locking foot square steel tube (104) is arranged on the outer wall of the bottom end of the side template (106); a latch (105) is provided on the side of the locking foot square steel tube (104) away from the side template (106); the latch (105) is inserted into the pin hole (115) on the bottom template frame to tightly fix the locking foot square steel tube (104).

7. A construction method for an integrated structure of a cap beam support working platform and a bottom formwork, characterized in that: The following steps are included: a. First, design the cap beam support, bottom formwork system, and cap beam side formwork system that meet the requirements according to the cap beam size. All steel structures are designed and processed as prefabricated components. The integrated bottom formwork (101) is processed into a standard bottom formwork with a width of 1m to 2m to meet the requirements of turnover. In addition, a non-standard bottom formwork (3) of appropriate width is configured according to the pier column spacing. Different non-standard width bottom formworks are configured for different pier column spacings. b. Install the cap beam support, install the hoop (501) at an appropriate height of the pier column, and make the hoop (501) on both sides of the parallel cap beam axis, then install the support (100) on the hoop (501), and then install two cap beam support main beams (200) on the top of the support support (100) and on both sides of the pier column, then install a pair of tie rods (502) between the two support main beams (200) to limit and fix the two support main beams (200); c. Making an integrated bottom mold (101) and an oblique bottom mold (4), welding the working platform pedal (112), the bottom mold panel (111) and the distribution beam into one, the distribution beam being the bottom mold skeleton, realizing the integration of the cap beam bracket and the bottom mold system, the bottom mold skeleton using rectangular steel pipes (113) and square steel pipes (114), the bottom mold skeleton model, spacing, and bottom mold panel (111) thickness must meet the stress and deformation requirements, and the oblique bottom mold (4) plate is made according to conventional means; d. Install the integrated formwork and the angled bottom formwork (4), install the surrounding pier column bottom formwork and the flat bottom formwork (2) on the bracket main beam (200) in sequence, install the non-standard bottom formwork (3) between the surrounding pier column bottom formwork (1) and the flat bottom formwork (2), and then install the angled bottom formwork (4) on the integrated flat bottom formwork (2) at both ends of the cap beam according to the size of the cap beam; e. Install the cap beam side formwork (5). After the cap beam reinforcement is installed, measure and lay out on the bottom formwork panel (111) of the integrated bottom formwork (101), draw the cap beam edge line, and the side formwork (106) is supported on the integrated bottom formwork (101) in sequence according to the drawn line part. The top of the symmetrical side formwork (106) is connected with two pair of tie rods (107). The outer wall of the pair of tie rods is provided with a pair of supporting steel pipes (108). The symmetrical steel pipes are arranged between the symmetrical side formworks (106). The bottom of the side formwork (106) is installed with a locking foot square steel pipe (104). Insert the pin (105) into the pin hole (115) on the bottom formwork frame to tighten and fix the locking foot square steel pipe (104). Through the support of the side formworks (106) at both ends by the bevel bottom formwork (4) and the extrusion of the side formwork (106) by the locking foot square steel pipe (104), the side formwork (106) is controlled to be straight, and then the cap beam concrete is poured.

8. The construction method of the integrated structure of the cap beam support working platform and the bottom formwork according to claim 7, characterized in that: After the bracket support (100) and the bracket main beam (200) are installed, a pair of wire rods (502) are installed between the two bracket main beams (200). The pair of wire rods (502) pass through the two bracket main beams (200) and are fixed to the two bracket main beams (200) by limiting nuts.

9. The construction method of the integrated structure of the cap beam support working platform and bottom formwork according to claim 7, characterized in that: In order to ensure that the bottom formwork system is arranged symmetrically along the axis of the cap beam, when installing the bottom formwork system, the first piece should be installed from the pier on one side of the pier to surround the bottom formwork (1), and the bottom formwork should be centered by using the guiding function of the centering of the cylinder. The bottom formwork (1) surrounding the pier is laid flat against the pier so that its straight edge is perpendicular to the support main beam (200), thereby meeting the symmetrical arrangement along the axis of the cap beam. The subsequent integrated bottom formwork (101) is installed in sequence and aligned with it. After the bottom formwork (1) surrounding the pier is installed at the other end, the non-standard bottom formwork (3) for filling the gap is installed.

10. The construction method of the integrated structure of the cap beam support working platform and bottom formwork according to claim 7, characterized in that: After the integrated bottom mold (101) is installed, the safety guardrails (103) are inserted into the guardrail sockets (116) at both ends, and the non-standard width gap is closed with a fence, and then the entire support platform is closed with a safety net.

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