Construction frame and expressway square high pier cantilever construction method

Abstract

The invention relates to the technical field of bridge pier scaffolds, and particularly discloses a scaffold and a cantilever construction method for a square high pier of an expressway. The construction frame comprises a construction frame main body, and the construction frame main body comprises a working platform; a climbing cone assembly used for connecting the working platform and the square pier is arranged at the working platform; a vertically arranged push plate is arranged above the working platform; the working platform is further provided with a pushing mechanism used for pushing the pushing plate to abut against the template. The construction method comprises the steps that S1, a foundation is poured; s2, pouring a first layer of square piers; and S3, other square piers are poured. According to the utility model, the working platform and the template are not interfered with each other and are separately hoisted, so that materials, tools and other stone fragments for pouring on the template and the working platform are not easy to fall off from an uninstalled template table surface, and an object strike accident is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bridge pier construction frames, in particular to a construction frame and a cantilever construction method for square high piers of expressways. Background Art

[0002] At present, high piers of expressways exceeding 35m are generally in the form of square piers. When pouring square piers, the mold turning process is generally used for pouring. When pouring square piers, the template and the working platform connected to the template are lifted by a crane, and the square pier is poured section by section as the template rises. Since the template and the working platform are connected together during pouring, when the square piers are gradually accumulated and the piers gradually increase in height, when the template and the working platform are lifted at high altitude at the same time, the materials, tools and other stone fragments used for pouring on the template and the working platform can easily fall from the uninstalled template table, causing an object impact accident. In addition, the template and the working platform are lifted at the same time, which increases the burden on the lifting rope. If the lifting process is improperly operated, it is easy to cause the template and the working platform to fall from a height, which places high technical requirements on the operator. Summary of the invention

[0003] The invention provides a construction frame and a cantilever construction method for a square high pier of a highway, which can overcome certain defects of the prior art.

[0004] A construction frame according to the present invention comprises: a construction frame main body, the construction frame main body comprises a working platform; a climbing cone assembly for connecting the working platform and the square pier is provided at the working platform; a vertically arranged push plate is provided above the working platform; and a pushing mechanism for pushing the push plate against the formwork is also provided at the working platform.

[0005] According to the present invention, when the construction frame is used for the construction of the bridge pier, the construction workers first bury the embedded rod in the climbing cone assembly in the cast square pier, then screw the embedded rod into the first threaded hole on the connecting seat by rotating the connecting seat, and then pass the bolt through the working platform and extend it into the second threaded hole on the connecting seat to fix the working platform on the square pier, thereby providing a foothold for the construction workers. When a section of square pier is cast, the construction workers first hang the hook of the crane in the hanging ring above the template, and then lift the template to the next casting point. After the template is fixed, tighten the bolts, unscrew the connecting seat from the embedded rod, remove the connection between the working platform and the square pier, and then lift the working platform upward to the next embedded rod installation location, and then connect the embedded rod to the connecting seat, and re-fix the working platform; this makes it convenient for construction workers to install and disassemble the connection between the working platform and the square pier; and when lifting the working platform and the template, the working platform and the template do not interfere with each other, and are lifted separately. When the square piers are gradually accumulated and the bridge piers are gradually increased, the template and the working platform are lifted separately at high altitude. Single lifting makes it easier for construction workers to control the lifting objects, so that the materials, tools and other stone fragments used for casting on the template and the working platform are not easy to fall from the template table that has not been installed, avoiding object impact accidents.

[0006] After the construction workers have fixed the formwork and before pouring concrete into the formwork, the construction workers push the push plate so that the push plate rests on the formwork, and then rotate the hollow sleeve to extend the two threaded rods outward, with one of the threaded rods pushing the second sleeve to slide along the guide column until the second sleeve rests on the first baffle on the working platform and no longer moves; the formwork is squeezed by the push plate to prevent the formwork from being squeezed and deformed by the concrete when pouring concrete.

[0007] Preferably, the pushing mechanism includes a guide column arranged along the width direction of the working platform; a first sleeve and a second sleeve slidably connected to the guide column are provided at the guide column; the lower end of the push plate is hinged to the first sleeve; a support rod assembly is obliquely arranged between the second sleeve and the push plate, and the support rod assembly includes a hollow sleeve rod, and two threaded rods are provided in the hollow sleeve rod, which extend to the push plate and the second sleeve respectively, and one end of the two threaded rods is hinged to the push plate and the second sleeve respectively; the hollow sleeve rod is threadedly connected to the threaded rod; a first baffle for blocking the movement of the second sleeve is provided at the end of the working platform away from the template.

[0008] According to the present invention, when the construction personnel need to remove the template, first, the hollow sleeve is rotated to shrink the two threaded rods in the hollow sleeve, and the threaded rod shrinks so that the second sleeve is separated from the first baffle plate; at this time, the construction personnel push the push plate to move the first sleeve and the second sleeve along the guide column, so as to move away from the template, which is convenient for the construction personnel to release the tightness of the template; Since the push plate is hinged to the first sleeve, the construction personnel can adjust the rotation angle of the push plate by adjusting the telescopic length of the threaded rod, thereby facilitating the construction personnel to adjust the rotation angle of the push plate to put the push plate in a vertical state.

[0009] Preferably, a level calibrator is provided at the push plate.

[0010] Through the present invention, the horizontal calibrator is used for construction workers to conveniently observe whether the push plate is in a vertical state when adjusting the rotation angle of the push plate.

[0011] Preferably, a first work frame is provided under the work platform, and the first work frame includes a connecting rod which is fixedly connected to the work platform and vertically arranged; a first support platform which is arranged parallel to the work platform is provided at the lower end of the connecting rod, and an inclined first fixing rod which connects the first support platform and the work platform is provided at one end of the first support platform away from the connecting rod.

[0012] With the present invention, construction workers go up and down the working platform and the first supporting platform through the ladder, which facilitates the maintenance of the side pier by the construction workers.

[0013] Preferably, a plurality of second fixing rods arranged obliquely are provided between the connecting rod and the working platform.

[0014] Through the present invention, the overall structural strength of the first working frame is preferably improved.

[0015] Preferably, a second working frame connected to the template is provided on the upper end of the push plate; the second working frame includes a second supporting platform, a tilted support rod is provided below the second supporting platform, and the support rod connects the second supporting platform and the template; a second baffle is provided at the end of the second supporting platform away from the template.

[0016] Through the present invention, after the template is installed, the second work frame is connected to the template by bolts, and the second support platform is supported by support rods, thereby improving the overall structural strength of the second work frame; when the staff stands on the second support platform, construction is carried out on the top of the opposite pier.

[0017] Preferably, the climbing cone assembly includes an embedded rod fixedly connected to the square pier, and a connecting seat bolted to the working platform; both ends of the connecting seat are respectively provided with a first threaded hole for the embedded rod to extend into, and a second threaded hole for the bolt to extend into; a thread matching the thread of the first threaded hole is provided on the side wall of the embedded rod.

[0018] Through the present invention, the climbing cone assembly can facilitate construction workers to connect and remove the connection between the working platform and the square pier.

[0019] Preferably, a tightening assembly is provided between the first sleeve and the second sleeve; the tightening assembly comprises a guide cylinder arranged along the length direction of the guide column, a guide hole arranged along the length direction of the guide cylinder is provided inside the guide cylinder; a blocking block is provided inside the guide hole, the blocking block divides the guide hole into two first sub-guide holes; a telescopic member is provided inside the first sub-guide hole, the telescopic member comprises a telescopic rod with one end extending out of the first sub-guide hole; A third threaded hole is provided at the blocking block, a threaded column extending into the third threaded hole is provided above the guide cylinder, a connecting column is provided at the upper end of the threaded column, circular plates are provided at both ends of the connecting column, and the connecting column and the circular plate together constitute a limit interval; a mounting block is provided at the limit interval, and a through hole is provided at the mounting block for the connecting column to pass through; a hinged rod is obliquely arranged between the mounting block and the telescopic rod, and the two ends of the hinged rod are respectively hinged to the telescopic rod and the mounting block.

[0020] Through the present invention, after the construction workers have adjusted the threaded rod and the hollow sleeve rod, they put the clamping assembly between the first sleeve and the second sleeve, and then rotate the rotating column at the upper end of the connecting column, which drives the connecting column and the threaded column to rotate, so that the threaded column is transferred into the third threaded hole. During the downward movement of the threaded column, the mounting block is driven to move downward, and the downward movement of the mounting block pushes the articulated rod to move, and the articulated rod pushes the two telescopic rods to move toward the two ends of the guide cylinder, so that the telescopic rod is pressed against the first sleeve and the second sleeve, so that the push plate moves when pouring concrete, which greatly improves the overall structural stability of the pushing mechanism.

[0021] Preferably, two parallel limit plates are provided at one end of the telescopic rod extending out of the first sub-guide hole, and the limit plates and the telescopic rod together form a slide groove for the guide column to extend into.

[0022] Through the present invention, the two limiting plates are clamped on the guide column, and during the movement of the telescopic rod, the limiting plates slide along the guide column, thereby preventing the telescopic rod from being separated from the guide column.

[0023] The present invention provides a cantilever construction method for square high piers of highways, and the specific steps are as follows: S1. Pouring foundation The construction workers dug a foundation pit, built a steel cage in the pit, then installed a mold along the outer periphery of the steel cage, and finally poured concrete into the mold. After the concrete solidified, the mold was removed to form the foundation; S2. Casting of the first layer of square piers After the foundation is erected, a steel cage is built on top of the foundation, and then formwork is placed inside and outside the steel cage. Then, the formwork is fixed by tension bolts passing through the formwork on both sides of the steel cage. Then, the embedded rod on the climbing cone assembly is tied near the top of the steel cage, and the embedded rod is passed through the outer formwork of the steel cage. Then, the push plate and the support rod assembly are moved to the outer formwork of the steel cage, and the push plate is pressed against the outer formwork of the steel cage through the support rod assembly. Finally, concrete is poured into the steel cage, and the formwork is removed after the concrete solidifies. S3. Casting of other square piers After the first layer of square piers are poured and excavated, the construction workers stand on the second supporting platform to install the steel cage and embedded rods above the first layer of square piers, and then lift the template upwards by the crane. After the template is lifted, the template is connected by tension bolts; then the construction workers lift the working platform to the embedded rods on the first layer of square piers, connect the embedded rods with the connecting seat on the working platform, and fix the working platform; then install the first working frame under the working platform, and install the second supporting platform above the working platform; install a pushing mechanism on the working platform surface; push the push plate against the template through the pushing mechanism; After the second layer of square piers is cast, the push mechanism is used to release the tightness of the formwork, and then the formwork is first lifted upward by the crane, followed by the entire construction frame body; finally, the steps of installing the embedded rods, adjusting the push mechanism to tighten the formwork, and successively lifting the formwork and the construction frame body are repeated to complete the subsequent square pier casting.

[0024] Through the present invention, the working platform and the template do not interfere with each other and are lifted separately. When the square piers are gradually accumulated and the bridge piers are gradually increased, the template and the working platform are lifted separately at high altitude. Single lifting makes it easier for construction workers to control the lifted objects, so that the materials, tools and other stone fragments used for pouring on the template and the working platform are not easy to fall from the template table that has not been installed, avoiding accidents caused by objects hitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main body of the construction frame in Example 1.

[0026] Figure 2 This is a schematic diagram of the tightening component in Example 1.

[0027] Figure 3 It is a cross-sectional view of the tightening component in Example 1.

[0028] Figure 4 Schematic diagram of the threaded column in Example 1.

[0029] Figure 5 Schematic diagram of the telescopic rod in Example 1.

[0030] Figure 6 This is a schematic diagram of the climbing cone assembly in Example 1.

[0031] Figure 7 This is a schematic diagram of the construction of the main body of the construction frame in Example 1. DETAILED DESCRIPTION

[0032] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0033] Example 1 like Figure 1-7 As shown, this embodiment provides a construction frame, which includes a construction frame body 100, and the construction frame body 100 includes a working platform 108; a climbing cone assembly 140 for connecting the working platform 108 and the square pier is provided at the working platform 108; a vertically arranged push plate 150 is provided above the working platform 108; and a pushing mechanism for pushing the push plate 150 against the formwork 120 is also provided at the working platform 108.

[0034] According to this embodiment, when the construction frame is constructed on the bridge pier, the construction workers first bury the embedded rod 5100 in the climbing cone assembly 140 in the cast square pier, and then screw the embedded rod 5100 into the first threaded hole 5200 on the connecting seat 5500 by rotating the connecting seat 5500, and then pass the bolt 5400 through the working platform 108 and extend it into the second threaded hole 5300 on the connecting seat 5500 to fix the working platform 108 on the square pier, thereby providing a foothold for the construction workers; When a section of the square pier is cast, the construction workers first hang the hook of the crane in the hanging ring 110 above the template 120, and then lift the template 120 to the next casting point. After the template 120 is fixed, the bolts 5400 are screwed, and then the connecting seat 5500 is unscrewed from the embedded rod 5100, and the connection between the working platform 108 and the square pier is removed. Then, the working platform 108 is lifted upward to the installation location of the next embedded rod 5100, and then the embedded rod 5100 is connected to the connecting seat 5500, and the working platform 108 is re-fixed; thereby It is convenient for construction workers to install and disassemble the connection between the working platform 108 and the square piers; and when the working platform 108 and the formwork 120 are hoisted, the working platform 108 and the formwork 120 do not interfere with each other and are hoisted separately. When the square piers are gradually accumulated and the bridge piers are gradually increased, when the formwork and the working platform are hoisted separately at high altitude, single hoisting makes it easier for construction workers to control the hoisted objects, so that the materials, tools and other stone fragments used for pouring on the formwork and the working platform are not easy to fall from the formwork table that has not been installed, thereby avoiding accidents caused by objects hitting.

[0035] After the construction workers have fixed the formwork 120 and before pouring concrete into the formwork 120, the construction workers push the push plate 150 so that the push plate 150 rests on the formwork 120, and then rotate the hollow sleeve 170 to extend the two threaded rods 160 outward, wherein one of the threaded rods 160 pushes the second sleeve 112 to slide along the guide column 113 until the second sleeve 112 rests on the first baffle 114 on the working platform 108 and does not move; the push plate 150 squeezes the formwork 120, thereby preventing the formwork 120 from being squeezed and deformed by the concrete when pouring the concrete.

[0036] A fence 180 is also provided at the first baffle plate 114 to prevent construction workers from falling from the working platform 108 .

[0037] A handle is provided at the hollow sleeve rod 170 to facilitate construction workers to rotate the hollow sleeve rod 170 .

[0038] In this embodiment, the pushing mechanism includes a guide column 113 arranged along the width direction of the working platform 108; a first sleeve 111 and a second sleeve 112 slidingly connected to the guide column 113 are provided at the guide column 113; the lower end of the push plate 150 is hinged to the first sleeve 111; a support rod assembly is obliquely arranged between the second sleeve 112 and the push plate 150, and the support rod assembly includes a hollow sleeve 170, and two threaded rods 160 are provided in the hollow sleeve 170, which extend to the push plate 150 and the second sleeve 112 respectively, and one end of the two threaded rods 160 is hinged to the push plate 150 and the second sleeve 112 respectively; the hollow sleeve 170 and the threaded rod 160 are threadedly connected; the end of the working platform 108 away from the template 120 is provided with a first baffle 114 for blocking the movement of the second sleeve 112.

[0039] According to this embodiment, when the construction personnel need to remove the template 120, first, the hollow sleeve 170 is rotated to shrink the two threaded rods 160 in the hollow sleeve 170, and the threaded rods 160 shrink so that the second sleeve 112 is separated from the first baffle 114; at this time, the construction personnel push the push plate 150 to move the first sleeve 111 and the second sleeve 112 along the guide column 113, so as to move away from the template 120, so as to facilitate the construction personnel to release the tightness of the template 120; Since the push plate 150 is hinged to the first sleeve 111 , the construction workers can adjust the rotation angle of the push plate 150 by adjusting the telescopic length of the threaded rod 160 , thereby facilitating the construction workers to adjust the rotation angle of the push plate 150 to put the push plate 150 in a vertical state.

[0040] In this embodiment, a horizontal calibrator 130 is provided at the push plate 150 .

[0041] Through this embodiment, the horizontal calibrator 130 is used to facilitate the construction personnel to observe whether the push plate 150 is in a vertical state when adjusting the rotation angle of the push plate 150.

[0042] In this embodiment, a first work frame 102 is provided under the work platform 108, and the first work frame 102 includes a connecting rod 109 which is fixedly connected to the work platform 108 and vertically arranged; a first support platform 103 which is arranged parallel to the work platform 108 is provided at the lower end of the connecting rod 109, and an end of the first support platform 103 away from the connecting rod 109 is provided with an inclined setting, and a first fixed rod 101 which connects the first support platform 103 and the work platform 108 is connected.

[0043] According to this embodiment, the construction workers use the ladder to go up and down the working platform 108 and the first supporting platform 103, which is convenient for the construction workers to maintain the side pier.

[0044] In this embodiment, a plurality of second fixing rods 104 are arranged between the connecting rod 109 and the working platform 108 and are arranged obliquely.

[0045] Through this embodiment, the overall structural strength of the first working frame 102 is preferably improved.

[0046] In this embodiment, a second working frame connected to the template 120 is provided at the upper end of the push plate 150; the second working frame includes a second support platform 106, and a tilted setting is provided below the second support platform 106, and a support rod 107 connecting the second support platform 106 and the template 120; a second baffle 105 is provided at the end of the second support platform 106 away from the template 120.

[0047] Through this embodiment, after the template 120 is installed, the second work frame is connected to the template 120 by bolts, and the second support platform 106 is supported by the support rod 107, so as to improve the overall structural strength of the second work frame; when the staff stands on the second support platform 106, construction is carried out on the top of the other pier.

[0048] In this embodiment, the climbing cone assembly 140 includes an embedded rod 5100 fixedly connected to the square pier, and a connecting seat 5500 connected to the working platform 108 by bolts 5400; both ends of the connecting seat 5500 are respectively provided with a first threaded hole 5200 for the embedded rod 5100 to extend into, and a second threaded hole 5300 for the bolt 5400 to extend into; the side wall of the embedded rod 5100 is provided with a thread that matches the thread of the first threaded hole 5200.

[0049] Through this embodiment, the climbing cone assembly 140 can facilitate construction workers to connect and remove the connection between the working platform 108 and the square pier.

[0050] In this embodiment, a tightening assembly 190 is provided between the first sleeve 111 and the second sleeve 112; the tightening assembly 190 includes a guide cylinder 1300 arranged along the length direction of the guide column 113, and a guide hole arranged along the length direction of the guide cylinder 1300 is provided inside the guide cylinder 1300; a blocking block 2200 is provided inside the guide hole, and the blocking block 2200 divides the guide hole into two first sub-guide holes 2300; a telescopic member 1500 is provided inside the first sub-guide hole 2300, and the telescopic member 1500 includes a telescopic rod 4200 with one end extending out of the first sub-guide hole 2300; A third threaded hole 2200 is provided at the blocking block 2200, a threaded column 1600 extending into the third threaded hole 2200 is provided above the guide cylinder 1300, a connecting column 3200 is provided at the upper end of the threaded column 1600, circular plates 3100 are provided at both ends of the connecting column 3200, and the connecting column 3200 and the circular plate 3100 together constitute a limit interval; a mounting block 1200 is provided at the limit interval, and a through hole 4100 for the connecting column 3200 to pass through is provided at the mounting block 1200; a hinged rod 1400 is obliquely arranged between the mounting block 1200 and the telescopic rod 4200, and both ends of the hinged rod 1400 are respectively hinged to the telescopic rod 4200 and the mounting block 1200.

[0051] Through this embodiment, after the construction personnel have adjusted the threaded rod 160 and the hollow sleeve rod 170, the tightening assembly 190 is placed between the first sleeve 111 and the second sleeve 112, and then the rotating column 1100 at the upper end of the connecting column 3200 is rotated. The rotating column 1100 drives the connecting column 3200 and the threaded column 1600 to rotate, so that the threaded column 1600 is transferred into the third threaded hole 2200. During the downward movement of the threaded column 1600, the mounting block 1200 is driven to move downward, and the downward movement of the mounting block 1200 pushes the articulated rod 1400 to move. The articulated rod 1400 pushes the two telescopic rods 4200 toward the two ends of the guide cylinder 1300, so that the telescopic rod 4200 is pressed against the first sleeve 111 and the second sleeve 112, so that the push plate 150 moves when pouring concrete, which better improves the overall structural stability of the pushing mechanism.

[0052] In this embodiment, two parallel limit plates 4300 are provided at one end of the telescopic rod 4200 extending out of the first sub-guide hole 2300 , and the limit plates 4300 and the telescopic rod 4200 together form a slide groove 4400 for the guide column 113 to extend into.

[0053] Through this embodiment, the two limit plates 4300 are clamped on the guide column 113. When the telescopic rod 4200 moves, the limit plates 4300 slide along the guide column 113, thereby preventing the telescopic rod 4200 from being separated from the guide column 113.

[0054] This embodiment provides a cantilever construction method for square high piers on highways, and the specific steps are as follows: S1. Pouring foundation The construction workers dug a foundation pit, built a steel cage in the pit, then installed a mold along the outer periphery of the steel cage, and finally poured concrete into the mold. After the concrete solidified, the mold was removed to form the foundation; S2. Casting of the first layer of square piers After the foundation is erected, a steel cage is built on the foundation, and then formwork 120 is placed inside and outside the steel cage. Then, the formwork 120 on both sides of the steel cage is passed through the tension bolts to fix the formwork 120; then, the embedded rod 5100 on the climbing cone assembly 140 is tied near the top of the steel cage, and the embedded rod 5100 is passed through the outer formwork 120 of the steel cage, and then the push plate 150 and the support rod assembly are moved to the outer formwork 120 of the steel cage, and the push plate 150 is pressed against the outer formwork 120 of the steel cage through the support rod assembly, and finally, concrete is poured into the steel cage, and the formwork 120 is removed after the concrete solidifies; S3. Casting of other square piers After the first layer of square piers are poured and excavated, the construction workers stand on the second support platform 106 to install the steel cage and the embedded rod 5100 above the first layer of square piers, and then lift the template 120 upwards by the crane. After the template 120 is lifted, the template 120 is connected by tension bolts; then the construction workers lift the working platform 108 to the embedded rod 5100 on the first layer of square piers, and connect the embedded rod 5100 with the connecting seat 5500 on the working platform 108 to fix the working platform 108; then install the first working frame 102 below the working platform 108, and install the second support platform 106 above the working platform 108; install a pushing mechanism on the surface of the working platform 108; and push the push plate 150 against the template 120 by the pushing mechanism; After the second layer of square piers is cast, the pushing mechanism is used to release the tightness of the template 120, and then the template 120 is first lifted upward by the crane, followed by the entire construction frame body 100; finally, the steps of installing the embedded rods 5100, adjusting the pushing mechanism to press the template 120, and successively lifting the template 120 and the construction frame body 100 are repeated to complete the subsequent square pier casting.

[0055] Through this embodiment, the working platform 108 and the formwork 120 do not interfere with each other and are lifted separately. When the square piers are gradually accumulated and the bridge piers are gradually increased, the formwork and the working platform are lifted separately at high altitude. Single lifting makes it easier for construction workers to control the lifted objects, so that the materials, tools and other stone fragments used for pouring on the formwork and the working platform are not easy to fall from the formwork table that has not been installed, avoiding accidents caused by objects hitting.

[0056] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0057] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A construction frame, characterized by: The invention comprises a construction frame body (100), wherein the construction frame body (100) comprises a working platform (108); a climbing cone assembly (140) for connecting the working platform (108) and a square pier is provided at the working platform (108); a vertically arranged push plate (150) is provided above the working platform (108); and a pushing mechanism for pushing the push plate (150) against the template (120) is also provided at the working platform (108).

2. A construction scaffold according to claim 1, characterized in that: The pushing mechanism includes a guide column (113) arranged along the width direction of the working platform (108); a first sleeve (111) and a second sleeve (112) slidably connected to the guide column (113) are provided at the guide column (113); the lower end of the push plate (150) is hinged to the first sleeve (111); a support rod assembly is obliquely arranged between the second sleeve (112) and the push plate (150), and the support rod assembly includes a hollow sleeve (170), and two threaded rods (160) are provided in the hollow sleeve (170) and extend toward the push plate (150) and the second sleeve (112) respectively, and one end of the two threaded rods (160) is hinged to the push plate (150) and the second sleeve (112) respectively; the hollow sleeve (170) and the threaded rod (160) are threadedly connected; and a first baffle (114) for blocking the movement of the second sleeve (112) is provided at one end of the working platform (108) away from the template (120).

3. A construction scaffold according to claim 2, characterized in that: A level calibrator (130) is provided at the push plate (150).

4. A construction scaffold according to claim 1, characterized in that: A first working frame (102) is provided below the working platform (108), and the first working frame (102) includes a connecting rod (109) fixedly connected to the working platform (108) and vertically arranged; a first supporting platform (103) is provided at the lower end of the connecting rod (109) and arranged parallel to the working platform (108); an end of the first supporting platform (103) away from the connecting rod (109) is provided with a first fixing rod (101) which is inclined and connects the first supporting platform (103) and the working platform (108).

5. A construction frame according to claim 4, characterized in that: A plurality of second fixing rods (104) arranged obliquely are provided between the connecting rod (109) and the working platform (108).

6. The construction frame according to claim 1, characterized in that: A second working frame connected to the template (120) is provided at the upper end of the push plate (150); the second working frame includes a second support platform (106), a tilting arrangement is provided below the second support platform (106), and a support rod (107) connecting the second support platform (106) and the template (120); a second baffle (105) is provided at one end of the second support platform (106) away from the template (120).

7. The construction frame according to claim 1, characterized in that: The climbing cone assembly (140) comprises an embedded rod (5100) fixedly connected to the square pier, and a connecting seat (5500) connected to the working platform (108) by bolts (5400); a first threaded hole (5200) for the embedded rod (5100) to extend into, and a second threaded hole (5300) for the bolt (5400) to extend into, are respectively provided at both ends of the connecting seat (5500); and a thread that matches the thread of the first threaded hole (5200) is provided on the side wall of the embedded rod (5100).

8. The construction frame according to claim 2, characterized in that: A tightening assembly (190) is provided between the first sleeve (111) and the second sleeve (112); the tightening assembly (190) comprises a guide cylinder (1300) arranged along the length direction of the guide column (113); a guide hole is provided inside the guide cylinder (1300) along the length direction of the guide cylinder (1300); a blocking block (2200) is provided inside the guide hole, and the blocking block (2200) divides the guide hole into two first sub-guide holes (2300); a telescopic member (1500) is provided inside the first sub-guide hole (2300), and the telescopic member (1500) comprises a telescopic rod (4200) with one end extending out of the first sub-guide hole (2300); A third threaded hole (2200) is provided at the blocking block (2200), a threaded column (1600) extending into the third threaded hole (2200) is provided above the guide cylinder (1300), a connecting column (3200) is provided at the upper end of the threaded column (1600), circular plates (3100) are provided at both ends of the connecting column (3200), and the connecting column (3200) and the circular plate (3100) together constitute a limit interval; a mounting block (1200) is provided at the limit interval, and a through hole (4100) for the connecting column (3200) to pass through is provided at the mounting block (1200); a hinged rod (1400) is obliquely provided between the mounting block (1200) and the telescopic rod (4200), and the two ends of the hinged rod (1400) are respectively hinged to the telescopic rod (4200) and the mounting block (1200).

9. The construction scaffold according to claim 8, characterized in that: One end of the telescopic rod (4200) extending out of the first sub-guide hole (2300) is provided with two parallel limit plates (4300), and the limit plates (4300) and the telescopic rod (4200) together form a sliding groove (4400) for the guide column (113) to extend into.

10. A cantilever construction method for high square piers on highways, comprising a construction frame according to any one of claims 1 to 9, and comprising the following steps: S1. Pouring foundation Construction workers dig a foundation pit, build a steel cage inside the pit, then install a mold around the outer perimeter of the cage. Finally, concrete is poured into the mold. After the concrete solidifies, the mold is removed to form the foundation. S2. Casting of the first layer of square piers After the foundation is erected, a steel cage is built above the foundation, and then formwork (120) is placed inside and outside the steel cage. Then, the formwork (120) is fixed by tension bolts passing through the formwork (120) on both sides of the steel cage. Then, the embedded rod (5100) on the climbing cone assembly (140) is tied near the top of the steel cage, and the embedded rod (5100) is passed through the outer formwork (120) of the steel cage. Then, the push plate (150) and the support rod assembly are moved to the outer formwork (120) of the steel cage, and the push plate (150) is pressed against the outer formwork (120) of the steel cage through the support rod assembly. Finally, concrete is poured into the steel cage, and the formwork (120) is removed after the concrete solidifies. S3. Casting of other square piers After the first layer of square piers is poured and excavated, the construction workers stand on the second support platform (106) to install the steel cage and the embedded rod (5100) above the first layer of square piers, and then use the crane to lift the template (120) upward. After the template (120) is lifted, the template (120) is connected by tension bolts; the construction workers then lift the working platform (108) to the embedded rod (5100) on the first layer of square piers, and connect the embedded rod (5100) to the connecting seat (5500) on the working platform (108) to fix the working platform (108); then install the first working frame (102) below the working platform (108), and install the second support platform (106) above the working platform (108); install a pushing mechanism on the working platform (108); push the push plate (150) against the template (120) through the pushing mechanism; After the second layer of square piers is poured, the pressing of the template (120) is released by the pushing mechanism, and then the template (120) is first lifted upward by the crane, followed by the entire construction frame body (100); finally, the steps of installing the embedded rods (5100), adjusting the pushing mechanism to press the template (120), and successively lifting the template (120) and the construction frame body (100) are repeated to complete the subsequent square pier pouring.

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