Connecting structure of y-type column template system and underground structure and construction method thereof

Abstract

A connecting structure of a Y-shaped column formwork system and an underground structure and a construction method thereof, comprising a basement ground, a basement wall surface, a vertical column formwork system enclosed outside a vertical column, an inclined column formwork system enclosed outside an inclined column and a column bottom base, the vertical column formwork system is a steel formwork system, comprising a vertical column formwork, the inclined column formwork system is a steel formwork system, comprising an inclined column formwork, an inclined column support steel pipe frame and a pull connection system therebetween. In the application, the support system of the inclined column adopts a combined design of a support frame and a pull connection system, wherein the support frame and the formwork system of the inclined column are respectively designed with rooting points of the pull connection system, the pull connection system is respectively designed with connecting assemblies connected with the support frame and the formwork system of the inclined column, the connecting assemblies on two sides are pulled and connected into a whole through a pull connection piece, through simple briefing of technical personnel to site operators, the operators can quickly master, the overall erection is convenient, the turnover is high, the stress is clear and the safety is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to a special-shaped formwork system, in particular a Y-shaped column formwork system and a connecting structure of an underground structure and a construction method thereof. BACKGROUND

[0002] With the continuous development of society, major cities are actively building various museums and exhibition halls, etc. As an important carrier of urban cultural dissemination, most museums have novel shapes. The main building steel roof is supported by large shuttle-shaped columns. The traditional shuttle-shaped columns are connected to the outdoor ground through a pin shaft. Therefore, Y-shaped columns are used underground to transmit the stress of the steel roof to the shuttle-shaped columns. The shuttle-shaped columns transmit the stress to the Y-shaped columns through cast steel ball hinge supports, and the vertical force is transmitted to the structure foundation to avoid transmitting the stress to the outdoor ground and achieve the damping effect.

[0003] However, the Y-shaped column is a left-right symmetrical column. In the construction process of the underground space, the overall high formwork needs to be customized, and the body is heavy, which has a certain difficulty in hoisting. SUMMARY

[0004] The purpose of the present application is to provide a Y-shaped column formwork system and a connecting structure of an underground structure and a construction method thereof, which solves the technical problem of limited space utilization, unique shape, overall high formwork customization, and heavy body hoisting difficulty in the construction process of the Y-shaped column underground space.

[0005] To achieve the above purpose, the present application adopts the following technical scheme:

[0006] A Y-shaped column formwork system and a connecting structure of an underground structure, comprising a basement ground, a basement wall, a vertical column formwork system enclosed outside a vertical column, an inclined column formwork system enclosed outside an inclined column, and a column bottom base, the vertical column formwork system is a steel formwork system, comprising a vertical column formwork,

[0007] The column bottom base is fixedly connected to the basement ground,

[0008] The inclined column formwork system is a steel formwork system, comprising an inclined column formwork, an inclined column support steel pipe frame, and a pull connection system therebetween, the bottom of the vertical column formwork and the bottom of the inclined column formwork are fixedly connected to the column bottom base,

[0009] The arrangement range of the inclined column support steel pipe frame is the horizontal projection range of the inclined column formwork system, the bottom of the inclined column support steel pipe frame is arranged on one side of the column bottom base on the basement ground, and the back side of the inclined column support steel pipe frame is fixedly connected to the basement wall through a connecting piece,

[0010] The inclined column formwork comprises a lower column formwork and an upper column formwork, which are connected and surrounded to form an inclined column pouring cavity in the middle,

[0011] The inclined column support steel pipe frame comprises vertical rods arranged in a horizontal and vertical net shape and horizontal rods arranged at intervals in the height direction, the horizontal rods are fixedly connected between the vertical rods, and positioning plates are arranged at intervals on the vertical rods,

[0012] The pull connection system comprises column side steel components fixedly connected with the inclined column formwork, frame body side steel components fixedly connected with the inclined column support steel pipe frame, and flower basket struts connecting the column side steel components and the frame body side steel components,

[0013] The column side steel components comprise support inclined vertical rods, support inclined horizontal rods, and column side connecting ear plates,

[0014] The support inclined vertical rods are two in number and are fixedly connected to the back side of the lower column formwork along the length direction of the lower column formwork within the range of the inclined column support steel pipe frame,

[0015] The support inclined horizontal rods are arranged at intervals along the length direction of the lower column formwork and are fixedly connected between the support inclined vertical rods at both ends of the support inclined horizontal rods,

[0016] The column side connecting ear plates are vertically and fixedly connected to the support inclined vertical rods, the column side connecting ear plates are arranged at intervals along the length direction of the support inclined vertical rods, the column side connecting ear plates on the adjacent two support inclined vertical rods are located on the same horizontal line, and the column side connecting ear plates extend out of the support inclined vertical rods and are provided with column side connecting ear plate holes,

[0017] The frame body side steel components are provided in one group, the number of groups is the same as that of the column side connecting ear plates, each group of frame body side steel components comprises support frame clamping rods, clamping rod connecting pieces, and frame body side connecting ear plates,

[0018] Each group of frame body side steel components comprises two support frame clamping rods, the length of the clamping rod is greater than the horizontal distance between the adjacent vertical rods, the distance between the support frame clamping rods is adapted to the size of the vertical rods and is fixedly connected as a whole through the clamping rod connecting pieces, the support frame clamping rods are arranged between the two vertical rods on the inclined column support steel pipe frame close to the column side steel components in the opposite range of the back side of the inclined column formwork, the vertical rods in the range are pull connection rods, the two ends of the support frame clamping rods are clamped on the two sides of the two pull connection rods, respectively, and the bottom side of the two end portions of the support frame clamping rods is placed and fixedly connected to the positioning plates,

[0019] The frame body side connecting ear plates are two in number and are vertically and fixedly connected to the front support frame clamping rods, the frame body side connecting ear plates are provided with frame body side connecting ear plate holes on the side facing the support inclined vertical rods,

[0020] The flower basket support rod is provided with a group, and two ends thereof are respectively connected with the column side connecting lug plate hole and the frame side connecting lug plate hole.

[0021] The lower side column template comprises a lower side semicircular panel, a lower side horizontal rib, a lower side vertical rib and a lower side end plate. The lower side horizontal rib is arranged along the circumference of the lower side semicircular panel and is arranged in a group along the length direction of the inclined column. The lower side vertical rib is arranged along the length direction of the inclined column and is arranged in a circle along the circumference direction of the inclined column. The two ends of the lower side vertical rib are respectively fixedly connected between two adjacent lower side horizontal ribs. The lower side horizontal rib is a U-shaped rib comprising a vertical rod arranged along the tangent line of the two sides of the lower side semicircular panel and a parallel rod connecting the outer ends of the two vertical rods. The lower side end plate is fixedly connected to the end surface of the lower side horizontal rib, and a lower side splicing hole is formed in the lower side end plate.

[0022] The width of the lower side horizontal rib is adapted to the width of the column side steel assembly, and the inner sides of the two support inclined vertical rods are respectively fixedly connected to the back surface of the lower side horizontal rib.

[0023] The upper side column template comprises an upper side semicircular panel, an upper side horizontal rib, an upper side vertical rib and an upper side end plate. The upper side horizontal rib is arranged along the circumference of the upper side semicircular panel and is arranged in a group along the length direction of the inclined column. The upper side vertical rib is arranged along the length direction of the inclined column and is arranged in a circle along the circumference direction of the inclined column. The two ends of the upper side vertical rib are respectively fixedly connected between two adjacent lower side horizontal ribs. The upper side end plate is fixedly connected to the end surface of the upper side horizontal rib, and an upper side splicing hole is formed in the upper side end plate. The lower side splicing hole is aligned with the upper side splicing hole and is connected by a bolt.

[0024] A horizontal reinforcing rod is arranged between the pull rod and the vertical rod on the back side of the pull rod, and the horizontal reinforcing rod is arranged above the connection position of the frame side steel assembly.

[0025] Each support inclined vertical rod is composed of two back side oppositely arranged channel steels and a support inclined vertical rod connecting piece connecting the channel steels. The support inclined vertical rod connecting piece is a channel steel with the same height as the support inclined vertical rod. The column side connecting lug plate is fixedly connected between the channel steels of the support inclined vertical rod and on one side of the channel steel of the support inclined vertical rod connecting piece. The support inclined horizontal rod is a square steel. The column side connecting lug plate comprises two single plates arranged in pairs.

[0026] The support frame clamping rod is a channel steel, the clamping rod connecting piece is a channel steel, and the frame side connecting lug plate comprises two single plates arranged in pairs.

[0027] Two positioning plates are arranged on the vertical rod between each adjacent two horizontal rods.

[0028] The wood template system is used to fill the vacancy at the bottom intersection of the vertical column template and the inclined column template.

[0029] The vertical column formwork system comprises a lower column system and an upper column system, the lower column system is a steel formwork system integrally connected with the inclined column formwork system, and the upper column system is a wood formwork system.

[0030] The construction method of the connection structure of the Y-shaped column formwork system and the underground structure comprises the following steps:

[0031] Step one: draw a line on the ground to accurately position the vertical column support steel pipe frame and the inclined column support steel pipe frame at the designed positions, and the top of the support steel pipe frame is integrally connected with the inner roof of the structure as far as possible;

[0032] Step two: construct the column bottom base on the basement ground;

[0033] Step three: support the vertical column support steel pipe frame and the inclined column support steel pipe frame at the designed positions;

[0034] Step four: install the inclined column formwork and the lower column system on the column bottom base, and temporarily support the inclined column formwork;

[0035] Step five: install the frame side steel assembly on the inclined column support steel pipe frame, install the column side steel assembly on the inclined column formwork, and then integrally connect the steel assemblies on both sides;

[0036] Step six: supplement the wood formwork system at the vacant position of the bottom intersection of the vertical column formwork and the inclined column formwork;

[0037] Step seven: support the upper column system as the wood formwork system;

[0038] Step eight: remove the temporary support;

[0039] Step nine: pour the Y-shaped column concrete.

[0040] Compared with the prior art, the present application has the following characteristics and beneficial effects:

[0041] The present application is a formwork connection structure designed for the Y-shaped column constructed in the underground space, and the formwork system of the Y-shaped column is designed in parts according to the shapes of the vertical column and the inclined column, wherein the bottom of the vertical column and the inclined column both adopt a steel formwork system, and the top of the vertical column adopts a wood formwork system, so that the overall formwork system is light in weight, and flexible assembly of the steel formwork and the wood formwork is realized.

[0042] In the present application, the support system of the inclined column is designed by combining a support frame and a connection system, wherein the support frame and the formwork system of the inclined column are both designed with a rooting point of the connection system, the connection system is designed with a connection assembly connected with the support frame and the formwork system of the inclined column, and the connection assemblies on both sides are integrally connected through a connection piece, so that the site workers can quickly master the overall erection by simple briefing from the technical personnel, the overall erection is convenient, the turnover is high, the stress is clear, and the safety and stability are good. BRIEF DESCRIPTION OF DRAWINGS

[0043] The present application will be further described in detail with reference to the accompanying drawings.

[0044] Figure 1 is a schematic diagram of the planar arrangement of the present application.

[0045] Figure 2 is a schematic diagram of the side view of the present application. Figure 1

[0046] Figure 3 is a schematic diagram of the cross-section of the inclined column.

[0047] Figure 4 is a schematic diagram of the lower column formwork.

[0048] Figure 5 is a schematic diagram of the cross-section of the lower column formwork.

[0049] Figure 6 is a schematic diagram of the upper column formwork.

[0050] Figure 7 is a schematic diagram of the cross-section of the upper column formwork.

[0051] Figure 8 is a schematic diagram of the column side steel assembly.

[0052] Figure 9 is a schematic diagram of the column side steel assembly from another perspective.

[0053] Figure 10 is a schematic diagram of the cross-section of the column side steel assembly.

[0054] Figure 11 is a schematic diagram of the shelf side steel assembly.

[0055] Figure 12 is a schematic diagram of the cross-section of the shelf side steel assembly.

[0056] REFERENCE NUMERALS:

[0057] 1 - basement floor, 2 - basement wall, 3 - column base, 4 - vertical column formwork, 41 - lower column system, 42 - upper column system, 5 - inclined column formwork, 51 - lower column formwork, 511 - lower half-circular panel, 512 - lower horizontal rib, 512a - vertical rod, 512b - parallel rod, 513 - lower longitudinal rib, 514 - lower end plate, 515 - lower splicing hole, 516 - stiffening plate,

[0058] ​52 - upper side column formwork, 521 - upper side semicircular panel, 522 - upper side horizontal rib, 523 - upper side vertical rib, 524 - upper side end plate, 525 - upper side splicing hole, 6 - inclined column support steel pipe frame, 61 - vertical rod, 62 - horizontal rod, 63 - positioning plate, 64 - horizontal reinforcing rod, 7 - column side steel assembly, 71 - support inclined longitudinal rod, 72 - support inclined horizontal rod, 73 - column side connecting lug plate, 74 - column side connecting lug plate hole, 75 - support inclined longitudinal rod connecting piece, 8 - frame body side steel assembly, 81 - support frame clamping rod, 82 - clamping rod connecting piece, 83 - frame body side connecting lug plate, 84 - frame body side connecting lug plate hole, 9 - basket strutting rod, 10 - wooden formwork system, 11 - internal roof of structure, 12 - vertical column support steel pipe frame. DETAILED DESCRIPTION

[0059] Embodiments refer to Figures 1-3 As shown in the drawings, a Y-shaped column formwork system is connected to an underground structure, and the Y-shaped concrete column is poured therein to effectively transmit the roof pressure on the shuttle-shaped column to the underground foundation, thereby avoiding the installation of the shuttle-shaped column on the outdoor ground and achieving the damping effect.

[0060] The underground structure includes a basement ground 1, a basement wall 2, a vertical column formwork system enclosed outside a vertical column, an inclined column formwork 5 system enclosed outside an inclined column, and a column bottom base 3. The vertical column formwork system is a steel formwork system and includes a vertical column formwork 4.

[0061] The column bottom base 3 is fixedly connected to the basement ground 1.

[0062] The inclined column formwork 5 system is a steel formwork system and includes an inclined column formwork 5, an inclined column support steel pipe frame 6, and a pull-connection system 7 therebetween. The bottom of the vertical column formwork 4 and the bottom of the inclined column formwork 5 are fixedly connected to the column bottom base 3.

[0063] The inclined column support steel pipe frame 6 is arranged in the range of the horizontal projection of the inclined column formwork 5 system. The bottom of the inclined column support steel pipe frame 6 is arranged on one side of the column bottom base 3 on the basement ground 1, and the back side of the inclined column support steel pipe frame 6 is fixedly connected to the basement wall 2 through a connecting piece.

[0064] Embodiments refer to Figures 4-7 As shown in the drawings, the inclined column formwork 5 includes a lower side column formwork 51 and an upper side column formwork 52. The lower side column formwork 51 and the upper side column formwork 52 are enclosed and spliced to form an inclined column pouring cavity in the middle.

[0065] Embodiments refer to Figures 1-3As shown, the inclined column support steel pipe frame 6 comprises vertical rods 61 arranged in a horizontal and vertical net shape and horizontal rods 62 arranged in the height direction, the horizontal rods 62 are fixedly connected between the vertical rods 61, and positioning plates 63 are arranged on the vertical rods 61. In this embodiment, the inclined column support steel pipe frame is a disc buckle frame connected by buckles between the vertical rods 61 and the horizontal rods 62. Two positioning plates 63 are arranged on the vertical rods 61 between every two adjacent horizontal rods 62.

[0066] Referring to Figures 1-3 As shown, the tensioning system comprises column side steel components 7 fixedly connected with the inclined column formwork 5, frame body side steel components 8 fixedly connected with the inclined column support steel pipe frame 6, and flower basket struts 9 connecting the column side steel components 7 and the frame body side steel components 8.

[0067] Referring to Figures 4-5 As shown, the lower side column formwork 51 comprises a lower side semicircular panel 511, lower side horizontal ribs 512, lower side vertical ribs 513, and a lower side end plate 514. The lower side horizontal ribs 512 are arranged in a ring shape along the lower side semicircular panel 511 and are arranged in a group in the length direction of the inclined column. The lower side vertical ribs 513 are arranged in a length direction along the inclined column and are arranged in a circle in the ring direction of the inclined column, wherein the two ends of the lower side vertical ribs 513 are fixedly connected between adjacent two lower side horizontal ribs 512. The lower side horizontal ribs 512 are U-shaped ribs comprising vertical rods 512a arranged along the tangents of the two sides of the lower side semicircular panel 511, and parallel rods 512b connecting the outer ends of the two vertical rods 512a. The lower side end plate 514 is fixedly connected to the end face of the lower side horizontal rib 512, and the lower side end plate 514 is provided with a lower side splicing hole 515. Reinforcing plates 516 are arranged between the lower side horizontal ribs 512 and the lower side semicircular panel 511.

[0068] The width of the lower side horizontal rib 512 is adapted to the width of the column side steel component 7, and the inner sides of the two supporting inclined vertical rods 71 are fixedly connected to the back side surfaces of the lower side horizontal rib 512.

[0069] Referring to Figures 6-7 As shown, the upper side column formwork 52 comprises an upper side semicircular panel 521, upper side horizontal ribs 522, upper side vertical ribs 523, and an upper side end plate 524. The upper side horizontal ribs 522 are arranged in a ring shape along the upper side semicircular panel 521 and are arranged in a group in the length direction of the inclined column. The upper side vertical ribs 523 are arranged in a length direction along the inclined column and are arranged in a circle in the ring direction of the inclined column, wherein the two ends of the upper side vertical ribs 523 are fixedly connected between adjacent two lower side horizontal ribs 512. The upper side end plate 524 is fixedly connected to the end face of the upper side horizontal rib 522, and the upper side end plate 524 is provided with an upper side splicing hole 525, and the lower side splicing hole 515 is aligned with the upper side splicing hole 525 and is connected by bolts.

[0070] Referring to Figures 8-10As shown, the column side steel assembly 7 includes a support inclined longitudinal rod 71, a support inclined transverse rod 72, and a column side connecting lug plate 73.

[0071] The support inclined longitudinal rod 71 is two in number, fixedly connected to the back side of the lower column formwork 51 along the length direction of the lower column formwork 51 within the range of the inclined column support steel pipe frame 6.

[0072] The support inclined transverse rod 72 is provided in a group along the length direction of the lower column formwork 51, and the two ends of the support inclined transverse rod 72 are fixedly connected between the support inclined longitudinal rods 71.

[0073] The column side connecting lug plate 73 is fixedly connected to the support inclined longitudinal rod 71, and a group of column side connecting lug plates 73 are provided along the length direction of the support inclined longitudinal rod 71, wherein the column side connecting lug plates 73 on the adjacent two support inclined longitudinal rods 71 are located on the same horizontal line, and the half of the column side connecting lug plate 73 away from the support inclined longitudinal rod 71 extends out of the support inclined longitudinal rod 71 and is provided with a column side connecting lug plate hole 74.

[0074] Each support inclined longitudinal rod 71 is composed of two back-to-back channel steels and a support inclined longitudinal rod connecting piece 75 connected between the channel steels, the support inclined longitudinal rod connecting piece 75 is a channel steel with the same height as the support inclined longitudinal rod 71, the column side connecting lug plate 73 is fixedly connected between the channel steels of the support inclined longitudinal rod 71 and one side of the channel steel of the support inclined longitudinal rod connecting piece 75, the support inclined transverse rod 72 is a square steel, and the column side connecting lug plate 73 includes two single plates arranged in pairs.

[0075] Referring to Figures 11-12 As shown, the frame body side steel assembly 8 is provided in a group, and the number of groups is the same as the number of groups of the column side connecting lug plate 73, and each group of the frame body side steel assembly 8 includes a support frame clamping rod 81, a clamping rod connecting piece 82, and a frame body side connecting lug plate 83. The frame body side connecting lug plate 83 is provided in two, vertically and fixedly connected to the front support frame clamping rod 81, and the side of the frame body side connecting lug plate 83 facing the support inclined longitudinal rod 71 is provided with a frame body side connecting lug plate hole 84. The support frame clamping rod 81 is a channel steel, the clamping rod connecting piece 82 is a channel steel, and the frame body side connecting lug plate 83 includes two single plates arranged in pairs.

[0076] Two support frame clamping rods 81 of each group of frame body side steel assembly 8, the length of the clamping rod is greater than the horizontal interval of the adjacent vertical rod 61, the distance between the support frame clamping rods 81 is adapted to the size of the vertical rod 61 and is fixedly connected into one body through the clamping rod connector 82, the support frame clamping rod 81 is arranged between the two vertical rods 61 on the inclined column support steel pipe frame 6 near the column side steel assembly 7 in the range opposite the back side of the inclined column formwork 5, the vertical rod 61 in the range is a pull connecting rod, the two ends of the support frame clamping rod 81 are clamped on the two sides of the two pull connecting rods respectively, and the bottom side of the two end portions of the support frame clamping rod 81 is placed and fixedly connected on the positioning plate 63.

[0077] Referring to Figure 2 As shown, a horizontal reinforcing rod 64 is arranged between the pull connecting rod and the vertical rod 61 on the back side of the pull connecting rod, and the horizontal reinforcing rod 64 is arranged above the connection position of the frame body side steel assembly 8. The flower basket support rod 9 is provided with a group, and the two ends are respectively connected to the column side connecting ear plate hole 74 and the frame body side connecting ear plate hole 84.

[0078] The bottom intersection of the vertical column formwork 4 and the inclined column formwork 5 is supplemented by a wood formwork system 10. The vertical column formwork 4 system includes a lower column system 41 and an upper column system 42. The lower column system 41 is a steel formwork system integrally connected with the inclined column formwork 5 system. The upper column system 42 is a wood formwork system.

[0079] The construction process of the present application is as follows:

[0080] Step one: mark the line on the ground to accurately position the vertical column support steel pipe frame 12 and the inclined column support steel pipe frame design position. The top of the support steel pipe frame is as much as possible to be integrated with the structure inner roof 11.

[0081] Step two: construct the column bottom base on the basement ground.

[0082] Step three: erect the vertical column support steel pipe frame 12 and the inclined column support steel pipe frame at the design position.

[0083] Step four: install the inclined column formwork 5 and the lower column system 41 on the column bottom base, and temporarily support the inclined column formwork 5.

[0084] Step five: install the frame body side steel assembly 8 on the inclined column support steel pipe frame, install the column side steel assembly 7 on the inclined column formwork 5, and then pull the two sides of the steel assembly into one body.

[0085] Step six: supplement the wood formwork system 10 at the bottom intersection of the vertical column formwork 4 and the inclined column formwork 5.

[0086] Step seven: erect the upper column system 42 as a wood formwork system.

[0087] Step eight: remove the temporary support.

[0088] Step nine, pouring Y-shaped column concrete.

Claims

1. A connection structure between a Y-shaped column formwork system and an underground structure, characterized in that: This includes the basement floor, basement walls, a vertical column formwork system enclosing the vertical columns, an inclined column formwork system enclosing the inclined columns, and column bases. The vertical column formwork system is a steel formwork system, including vertical column formwork. The column base is fixedly connected to the basement floor. The inclined column formwork system is a steel formwork system, including inclined column formwork, inclined column supporting steel pipe frame, and the connection system between the two. The bottom of both the vertical column formwork and the bottom of the inclined column formwork are fixedly connected to the column base. The inclined column support steel pipe frame is arranged within the horizontal projection range of the inclined column formwork system. The bottom of the inclined column support steel pipe frame rests on the basement floor, on one side of the column base. The back side of the inclined column support steel pipe frame is fixedly connected to the basement wall via connectors. The inclined column formwork includes a lower column formwork and an upper column formwork, which are joined together to form an inclined column casting cavity in the middle. The inclined column support steel pipe frame includes vertical bars arranged in a two-way grid pattern and horizontal bars spaced apart along the height direction. The horizontal bars are fixedly connected between the vertical bars, and positioning plates are provided at intervals on the vertical bars. The connection system includes column-side steel components fixedly connected to the inclined column formwork, frame-side steel components fixedly connected to the inclined column support steel pipe frame, and basket bracing connecting the column-side steel components and the frame-side steel components. The column-side steel assembly includes a supporting diagonal longitudinal bar, a supporting diagonal transverse bar, and a column-side connecting lug. There are two supporting diagonal longitudinal bars, which are installed within the range of the inclined column support steel pipe frame and fixedly connected to the back side of the lower column formwork along the length of the lower column formwork. The supporting diagonal crossbars are spaced apart along the length of the lower column formwork, and the two ends of the supporting diagonal crossbars are horizontally fixedly connected between the supporting diagonal longitudinal crossbars. The column-side connecting lugs are vertically and fixedly connected to the supporting diagonal longitudinal rods. A set of column-side connecting lugs is arranged at intervals along the length of the supporting diagonal longitudinal rods. The column-side connecting lugs on two adjacent supporting diagonal longitudinal rods are located on the same horizontal line. The half of the column-side connecting lugs facing away from the supporting diagonal longitudinal rods extends out of the supporting diagonal longitudinal rods and has a column-side connecting lug hole. The frame side steel assembly consists of one set, the number of which is the same as the number of sets of column side connecting lugs. Each set of frame side steel assembly includes a support frame clamp, a clamp connector, and a frame side connecting lug. Each set of side steel components of the frame has two support frame clamps. The length of the clamps is greater than the horizontal spacing between adjacent vertical members. The distance between the support frame clamps is adapted to the size of the vertical members and they are fixedly connected as one unit through clamp connectors. The support frame clamps are set between two vertical members on the inclined column support steel pipe frame that is close to the column side steel components on the back side of the inclined column formwork. The vertical members in this range are tie rods. The two ends of the support frame clamps are respectively clamped to the two sides of the two tie rods. The bottom sides of the two ends of the support frame clamps rest on and are fixedly connected to the positioning plate. There are two connecting lugs on the frame side, which are vertically and fixedly connected to the front support frame clamp. The side of the connecting lug facing the support diagonal longitudinal bar has a connecting lug hole. The flower basket support rod is provided in a set, with its two ends respectively connected to the connecting ear plate holes on the column side and the connecting ear plate holes on the frame side. The gaps at the bottom intersection of the vertical column formwork and the inclined column formwork are filled using a wooden formwork system. The vertical column formwork system includes a lower column system and an upper column system. The lower column system and the inclined column formwork system are an integrally connected steel formwork system, and the upper column system is a wooden formwork system.

2. The connection structure between the Y-shaped column formwork system and the underground structure according to claim 1, characterized in that: The lower column template includes a lower semi-circular panel, lower horizontal ribs, lower vertical ribs, and a lower end plate. The lower horizontal ribs are arranged circumferentially along the lower semi-circular panel and are spaced apart along the length of the inclined column. The lower vertical ribs are arranged continuously along the length of the inclined column and are spaced apart circumferentially along the inclined column. The two ends of the lower vertical ribs are fixedly connected between two adjacent lower horizontal ribs. The lower horizontal ribs are U-shaped ribs and include vertical rods arranged along the tangents on both sides of the lower semi-circular panel and parallel rods connecting the outer ends of the two vertical rods. The lower end plate is fixedly connected to the end face of the lower horizontal ribs and has a lower splicing hole. The width of the lower transverse rib is adapted to the width of the column side steel assembly, and the inner sides of the two supporting diagonal longitudinal bars are respectively fixedly connected to the back surface of the lower transverse rib. The upper column template includes an upper semi-circular panel, upper horizontal ribs, upper longitudinal ribs, and an upper end plate. The upper horizontal ribs are arranged circumferentially along the upper semi-circular panel and are spaced apart along the length of the inclined column. The upper longitudinal ribs are arranged continuously along the length of the inclined column and are spaced apart circumferentially along the inclined column. The two ends of the upper longitudinal ribs are respectively fixedly connected between two adjacent lower horizontal ribs. The upper end plate is fixedly connected to the end face of the upper horizontal ribs. The upper end plate has an upper splicing hole, and the lower splicing hole is aligned with the upper splicing hole and connected by bolts.

3. The connection structure between the Y-shaped column formwork system and the underground structure according to claim 1, characterized in that: A horizontal reinforcing rod is provided between the tie rod and the vertical rod on its back side, and the horizontal reinforcing rod is located above the connection position of the steel component on the side of the frame.

4. The connection structure between the Y-shaped column formwork system and the underground structure according to claim 1, characterized in that: Each supporting diagonal longitudinal bar consists of two channel steels arranged opposite each other on their back sides and a supporting diagonal longitudinal bar connector between the channel steels. The supporting diagonal longitudinal bar connector is a channel steel of the same height as the supporting diagonal longitudinal bar. The column-side connecting lug is fixedly connected between the channel steels of the supporting diagonal longitudinal bar and on one side of the channel steel of the supporting diagonal longitudinal bar connector. The supporting diagonal crossbar is a square steel. The column-side connecting lug includes two single plates arranged in pairs.

5. The connection structure between the Y-shaped column formwork system and the underground structure according to claim 1, characterized in that: The support frame clamping rod is made of channel steel, the clamping rod connector is made of channel steel, and the frame side connecting ear plate includes two single plates arranged in pairs.

6. The connection structure between the Y-shaped column formwork system and the underground structure according to claim 1, characterized in that: Two positioning plates are installed on the vertical bar between each pair of adjacent horizontal bars.

7. A construction method for the connection structure between the Y-shaped column formwork system and the underground structure according to any one of claims 1-6, characterized in that, The construction steps are as follows: Step 1: Mark the lines on the ground to accurately locate the designed positions of the vertical column support steel pipe frame and the inclined column support steel pipe frame, and connect the top of the support steel pipe frame with the inner top plate of the structure as one unit; Step two: Construct column bases on the basement floor; Step 3: Erect vertical column support steel pipe frames and inclined column support steel pipe frames at the designed locations; Step 4: Install the inclined column formwork and the lower column system on the column base, and provide temporary support for the inclined column formwork; Step 5: Install the side steel components of the frame on the inclined column support steel pipe frame, install the column side steel components on the inclined column formwork, and then connect the steel components on both sides into one piece; Step 6: Fill the gap at the bottom intersection of the vertical column formwork and the inclined column formwork using a wooden formwork system; Step 7: The upper column system is constructed using a timber formwork system; Step 8: Remove the temporary supports; Step nine: Pour concrete for the Y-shaped column.

Images