A construction method for a refuge layer at the top of an ultra-high atrium

Abstract

The present invention discloses a construction method for a refuge layer at the top of an ultra-high atrium, comprising the following steps: Step 1, preliminary construction, first constructing the foundation and basement, and then constructing the main building structure; Step 2, building an aerial platform, partially dismantling the protective outer frame of the main building structure, and building an aerial platform on the top of the atrium; Step 3, construction of the refuge layer, building a support frame on the aerial platform, and then supporting the concrete pouring template after the construction is completed. After the support is completed, concrete is poured, and after the construction is completed, the concrete pouring template is removed; Step 4, dismantling the aerial platform, dismantling the support frame on the aerial platform, connecting the lifting equipment to the aerial platform, cutting the connection between the aerial platform and the top of the atrium, and then transporting the entire aerial platform after cutting to a designated position through the lifting equipment. This method reduces the difficulty of high-altitude formwork, shortens the construction period, and increases construction safety.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a construction method for a refuge layer at the top of an ultra-high atrium. Background Art

[0002] The high-altitude formwork areas of residential towers are primarily concentrated in the elevated refuge floor, the partially cantilevered exterior facade panels, and the elevated locations of the architecturally designed super-high atrium. This project, a super-high-rise residential tower, utilizes an aluminum formwork + climbing frame construction system. The refuge floor has a partially cantilevered structure with a maximum cantilever length of 4.2m, and cantilever beam cross-sections of 200×400mm, 200×500mm, 300×650mm, and 800×650mm. High-altitude formwork in high-altitude construction projects is not only difficult but also extremely dangerous, especially in high-rise buildings with atrium structures. While simplifying the construction process and construction period, a high-altitude platform for formwork support is required to solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to provide a construction method for a refuge layer at the top of an ultra-high atrium, which solves the problem of difficulty in high-altitude formwork.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A construction method for a refuge layer at the top of an ultra-high atrium comprises the following steps:

[0006] Step 1: Preliminary construction: First, construct the foundation and basement, then proceed to the main building structure. When the construction reaches the lower floor where the refuge floor is located, the main building structure construction will be suspended;

[0007] The main building structure has a quadrilateral outer contour in the plane. An atrium is provided in the middle of the main building structure, and the top of the atrium is a refuge floor of the main building structure. Mounting holes are reserved on the walls on both sides of the top of the atrium.

[0008] Step 2: Build the high-altitude platform. Partially dismantle the protective outer frame of the main building structure and build the high-altitude platform on the top of the atrium.

[0009] The specific steps for constructing the high-altitude platform are:

[0010] S0, high-altitude platform assembly, the operator assembles the high-altitude platform on the ground;

[0011] S1, preparation before hoisting the aerial platform, remove the protective outer frame at the installation location of the aerial platform, and retain the protective outer frame below the installation location of the aerial platform as the operating platform;

[0012] S2, aerial platform hoisting, use a tower crane to lift the assembled aerial platform to the installation location, and use a slip rope or the operator to adjust the aerial platform to ensure that the aerial platform is installed smoothly in place;

[0013] S3, preparation after the aerial platform is hoisted, welding multiple square tubes on the aerial work platform, and installing support frames on top of the square tubes with fasteners;

[0014] Step 3: Construction of the refuge floor: Build a support frame on the high-altitude platform. After the support frame is built, the concrete pouring formwork is supported. After the formwork is supported, concrete is poured. After the construction is completed, the concrete pouring formwork is removed.

[0015] The refuge floor construction specifically refers to the refuge floor slab construction, and the construction steps are as follows:

[0016] A0, support frame construction: Build the first support frame for the refuge floor construction on the high-altitude platform. The first support frame is higher than the location of the refuge floor, and a dense mesh is hung on the raised part as edge protection for concrete pouring;

[0017] A1, concrete pouring formwork support, the refuge floor concrete pouring formwork is supported above the first support frame for refuge floor construction;

[0018] A2, concrete pouring: After the formwork is completed, concrete is poured to form the refuge floor slab, and then the concrete pouring formwork for the refuge floor slab is removed;

[0019] A3, subsequent construction: multiple safety ropes are stretched between the high-altitude platform and the refuge floor, and an external cantilever climbing frame is built on the high-altitude platform to continue the construction of the upper main building structure;

[0020] The construction of the refuge floor is specifically the construction of the refuge floor cantilever plate, and the construction steps are as follows:

[0021] B0, support frame construction, support multiple support rods at the cantilevered part below the aerial platform, and build a second support frame on the aerial platform for the construction of the refuge floor cantilever slab. The top of the second support frame is higher than the location of the refuge floor slab, and a fine mesh is hung on the raised part as edge protection for concrete pouring;

[0022] B1, concrete pouring formwork, the formwork for concrete pouring of the refuge floor cantilever slab is supported above the second support frame for the construction of the refuge floor cantilever slab;

[0023] B2, concrete pouring: after the formwork is completed, concrete is poured to form the refuge floor cantilever slab, and then the concrete pouring formwork for the refuge floor cantilever slab is removed;

[0024] Step 4: Dismantle the aerial platform. Remove the support frame on the aerial platform, install a hanging basket under the completed refuge floor, select a lifting point on the aerial platform, connect the lifting equipment to the aerial platform, and the operator will use the hanging basket to cut the connection between the aerial platform and the top of the atrium, and then transport the entire aerial platform to the designated location through the lifting equipment.

[0025] Preferably, in step 2, the aerial platform includes a platform frame, multiple connecting rods and multiple diagonal support frames, the platform frame is installed on the diagonal support frames through the connecting rods, the platform frame includes multiple cross bars and multiple longitudinal bars, the multiple longitudinal bars are arranged in parallel and spaced apart below the multiple cross bars arranged in parallel and spaced apart, the diagonal support frame includes four diagonal support legs, the four diagonal support legs are arranged in two groups of figure eights at intervals, the top of each group of figure eights is connected by one of the connecting rods, and the diagonal support legs are supported and connected to one end of the connecting rod by the diagonal support rod; the cross bar is made of I-beam, and multiple positioning ribs are vertically arranged on the cross bar.

[0026] Preferably, the aerial platform is installed across both sides of the atrium top, and the bottom ends of the diagonal support legs and both ends of the connecting rods are installed in mounting holes reserved on the walls on both sides of the atrium top.

[0027] Preferably, a connecting rib is embedded in the mounting hole; a connecting cross bar is provided at the bottom of the diagonal support leg, and the diagonal support leg is connected to the connecting rib via the connecting cross bar.

[0028] Preferably, in the step three, the vertical poles constituting the support frame for the construction of the refuge floor slab are connected to the positioning ribs.

[0029] Preferably, in the step three, the vertical poles constituting the support frame for the construction of the cantilevered slab of the refuge floor are connected to the positioning ribs.

[0030] In the present invention, the middle and lower part of the main building structure is divided into two independent parts on the left and right, and the interval area between the two independent parts is the atrium. During construction, in order to simplify the construction process and shorten the construction period, the protective external frame and climbing frame of the middle and lower part of the main building structure can be built only relying on the left and right independent parts. When the construction reaches the top of the atrium and the refuge floor construction is about to be carried out, the external protective climbing frame can be partially dismantled, and a high-altitude platform can be built between the left and right independent parts that constitute the atrium. The refuge floor and the upper main building structure are constructed relying on the high-altitude platform, thereby reducing the construction difficulty. When the refuge floor above the atrium is a common floor structure, the first support frame can be built on the high-altitude platform, and the refuge floor formwork and concrete pouring can be carried out on the first support frame. After the construction of the refuge floor is completed, multiple safety ropes are tied between the high-altitude platform and the refuge floor bottom plate to increase the safety of the high-altitude platform. Then, the high-altitude platform can be used as the basis of the support frame to continue the construction of the upper main building structure, which reduces the construction difficulty and risk. When the refuge floor above the atrium is a cantilever structure, the platform frame of the high-altitude platform needs to be adjusted for applicability according to the cantilever length of the refuge floor cantilever plate. Therefore, in order to increase the safety of the high-altitude platform, multiple support rods are supported on the cantilevered part below the high-altitude platform. After the high-altitude platform is reinforced, the second support frame is built and the concrete is poured. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the outer outline of the main building structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the construction of step 2 of the present invention;

[0033] Figure 3 This is a schematic diagram of another perspective of the construction of step 2 of the present invention;

[0034] Figure 4 This is a construction diagram of step three of the present invention;

[0035] Figure 5 This is a schematic diagram of the construction of the refuge floor in step three of the present invention, specifically the construction of the refuge floor cantilever plate;

[0036] In the figure: 1. Main building structure; 2. High-altitude platform; 3. Close-mesh net; 4. Support frame; 5. Support rod; 10. Refuge floor; 11. Atrium; 110. Mounting hole; 111. Connecting rib; 20. Platform frame; 21. Connecting rod; 22. Diagonal support frame; 40. First support frame; 41. Second support frame; 200. Cross bar; 201. Longitudinal bar; 202. Positioning rib; 220. Diagonal support leg; 221. Connecting cross bar. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] A construction method for a refuge layer at the top of an ultra-high atrium comprises the following steps:

[0039] Step 1: Early stage construction: first construct the foundation and basement, then proceed to the main building structure 1. When the construction reaches the lower floor where the refuge floor 10 is located, the construction of the main building structure 1 is suspended.

[0040] In this example, if Figure 1 As shown, the outer contour of the main building structure 1 is a quadrilateral. An atrium 11 is provided in the middle of the main building structure 1, and the top of the atrium 11 is a refuge floor 10 of the main building structure 1. Mounting holes 110 are reserved on the walls on both sides of the top of the atrium 11.

[0041] Step 2: Build the high-altitude platform 2, such as Figure 2 and Figure 3 As shown, the protective outer frame of the main building structure is partially removed, and a high-altitude platform 2 is built on the top of the atrium 11;

[0042] In this example, the aerial platform 2 includes a platform frame 20, multiple connecting rods 21, and multiple diagonal braces 22. The platform frame 20 is mounted on the diagonal braces 22 via the connecting rods 21. The platform frame 20 includes multiple horizontal bars 200 and multiple vertical bars 201. The multiple vertical bars 201 are arranged in parallel and spaced relationship below the multiple horizontal bars 200. The diagonal braces 22 include four diagonal brace legs 220. The four diagonal brace legs 220 are arranged in two groups of figure-eights, with the top of each group of figure-eights connected by a connecting rod 21. The diagonal brace legs 220 are connected to one end of the connecting rod 21 by the diagonal brace. The horizontal bars 200 are made of I-beams and have multiple positioning ribs 202 vertically arranged on the horizontal bars 200. The aerial platform 2 is installed horizontally across the top of the atrium 11. The bottom ends of the diagonal brace legs 220 and the ends of the connecting rods 21 are installed in the mounting holes 110 reserved on the walls on both sides of the top of the atrium 11. A connecting rib 111 is embedded in the mounting hole 110 ; a connecting cross bar 221 is provided at the bottom of the diagonal support leg 220 , and the diagonal support leg 220 is connected to the connecting rib 111 via the connecting cross bar 221 , and the connecting cross bar 221 and the connecting rib 111 are connected by welding.

[0043] The specific steps for building the aerial platform 2 are as follows:

[0044] S0, assembling the aerial platform 2, the operator assembles the aerial platform 2 on the ground;

[0045] S1, preparation before hoisting the aerial platform 2, remove the protective outer frame at the installation location of the aerial platform 2, and retain the protective outer frame below the installation location of the aerial platform 2 as an operating platform;

[0046] S2, hoisting the aerial platform 2, using a tower crane to hoist the assembled aerial platform 2 to the installation location, and adjusting the aerial platform 2 by sliding a rope or by the operator to ensure that the aerial platform 2 is successfully installed in place;

[0047] S3, after the aerial platform 2 is hoisted, prepare to weld multiple square tubes on the aerial work platform and install the support frame 4 on top of the square tubes with fasteners;

[0048] Step 3: Refuge floor construction: build a support frame 4 on the high-altitude platform 2, and then support the concrete pouring template after the support is completed. After the support is completed, concrete pouring is carried out. Figure 4 , after the construction is completed, the concrete pouring formwork will be removed;

[0049] The construction of the refuge floor specifically refers to the construction of the refuge floor slab. The construction steps are as follows:

[0050] A0, the support frame 4 is erected. A first support frame 40 for the construction of the refuge floor is erected on the aerial platform 2. In this example, the vertical poles of the first support frame 40 for the construction of the refuge floor are connected to the positioning ribs 202. The first support frame 40 is higher than the location of the refuge floor, and a fine mesh net 3 is hung on the raised portion as an edge protection for concrete pouring.

[0051] A1, concrete pouring formwork, the formwork for the refuge floor concrete pouring formwork is supported above the first support frame 40 for refuge floor construction;

[0052] A2, concrete pouring: After the formwork is completed, concrete is poured to form the refuge floor slab, and then the concrete pouring formwork for the refuge floor slab is removed;

[0053] A3, subsequent construction: multiple safety ropes are set between the aerial platform 2 and the refuge floor, an external cantilever climbing frame is built on the aerial platform 2, and the construction of the upper main building structure 1 is continued;

[0054] The construction of the refuge floor is specifically the construction of the refuge floor cantilever slab, see Figure 5 , the construction steps are:

[0055] B0, the support frame 4 is constructed, and multiple support rods 5 are supported at the cantilevered portion below the aerial platform 2. A second support frame 41 for the construction of the refuge floor cantilever slab is constructed on the aerial platform 2. The top of the second support frame 41 is higher than the location of the refuge floor slab, and a fine mesh 3 is hung on the raised portion as an edge protection for concrete pouring; in this example, the vertical rods constituting the second support frame 41 for the construction of the refuge floor cantilever slab are connected to the positioning ribs 202;

[0056] B1, concrete pouring formwork, the formwork for concrete pouring of the refuge floor cantilever slab is supported above the second support frame 41 for construction of the refuge floor cantilever slab;

[0057] B2, concrete pouring: after the formwork is completed, concrete is poured to form the refuge floor cantilever slab, and then the concrete pouring formwork for the refuge floor cantilever slab is removed;

[0058] Step 4: dismantle the aerial platform 2, remove the support frame 4 on the aerial platform 2, install a hanging basket under the completed refuge floor, select a lifting point on the aerial platform 2, connect the lifting equipment to the aerial platform 2, and the operator takes the hanging basket to cut the connection between the aerial platform 2 and the top of the atrium 11, and then transport the entire aerial platform 2 to the designated location through the lifting equipment.

[0059] The above embodiments are merely some illustrations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A construction method for a refuge floor at the top of an ultra-high atrium, characterized in that: The following steps are involved: Step 1: early construction, first construct the foundation and basement, then proceed with the construction of the main building structure (1), and suspend the construction of the main building structure (1) when the construction reaches the lower floor of the refuge floor (10); The main building structure (1) has a quadrilateral outer contour in the plane. An atrium (11) is provided in the middle of the main building structure (1), and the top of the atrium (11) is a refuge floor (10) of the main building structure (1). Mounting holes (110) are reserved on the walls on both sides of the top of the atrium (11). Step 2: constructing the high-altitude platform (2). Partially dismantle the protective outer frame of the main building structure and construct the high-altitude platform (2) on the top of the atrium (11); The specific steps of constructing the high-altitude platform (2) are as follows: S0, assembling the aerial platform (2), the operator assembles the aerial platform (2) on the ground; S1, preparation before hoisting the aerial platform (2), removing the protective outer frame at the installation position of the aerial platform (2), and retaining the protective outer frame below the installation position of the aerial platform (2) as an operating platform; S2, hoisting the high-altitude platform (2), using a tower crane to hoist the assembled high-altitude platform (2) to the installation location, and adjusting the high-altitude platform (2) by sliding a rope or by an operator to ensure that the high-altitude platform (2) is smoothly installed in place; S3, after the aerial platform (2) is hoisted, preparation is performed by welding a plurality of square tubes on the aerial work platform and installing a support frame (4) above the square tubes through fasteners; Step 3: Construction of the refuge floor: Building a support frame (4) on the high-altitude platform. After the building is completed, the concrete pouring formwork is supported. After the support is completed, concrete is poured. After the construction is completed, the concrete pouring formwork is removed. The refuge floor construction specifically refers to the refuge floor slab construction, and the construction steps are as follows: A0, a support frame (4) is constructed, and a first support frame (40) for the construction of the refuge floor is constructed on the high-altitude platform (2). The first support frame (40) is higher than the location of the refuge floor, and a dense mesh (3) is hung on the raised portion as an edge protection for concrete pouring; A1, concrete pouring formwork, supporting the formwork for concrete pouring of the refuge floor slab above the first support frame (40) for refuge floor slab construction; A2, concrete pouring: After the formwork is completed, concrete is poured to form the refuge floor slab, and then the concrete pouring formwork for the refuge floor slab is removed; A3, subsequent construction, multiple safety ropes are stretched between the high-altitude platform (2) and the refuge floor, an external cantilever climbing frame is built on the high-altitude platform (2), and the construction of the upper main building structure (1) is continued; The construction of the refuge floor is specifically the construction of the refuge floor cantilever plate, and the construction steps are as follows: B0, a support frame (4) is constructed, and a plurality of support rods (5) are supported at a cantilevered portion below the high-altitude platform (2), and a second support frame (41) for the construction of a cantilevered slab of the refuge layer is constructed on the high-altitude platform (2). The top of the second support frame (41) is higher than the location of the refuge layer floor slab, and a dense mesh (3) is hung on the raised portion as an edge protection for concrete pouring; B1, concrete pouring formwork, supporting the concrete pouring formwork of the refuge floor cantilever slab above the second support frame (41) for construction of the refuge floor cantilever slab; B2, concrete pouring: after the formwork is completed, concrete is poured to form the refuge floor cantilever slab, and then the concrete pouring formwork for the refuge floor cantilever slab is removed; Step 4: remove the aerial platform (2), remove the support frame (4) on the aerial platform (2), install a hanging basket under the completed refuge floor, select a lifting point on the aerial platform (2), connect the lifting equipment to the aerial platform (2), and the operator rides on the hanging basket to cut the connection between the aerial platform (2) and the top of the atrium (11), and then transport the entire aerial platform (2) after cutting to the designated location through the lifting equipment.

2. The construction method of the refuge floor at the top of the super-high atrium according to claim 1 is characterized by: In the step 2, the aerial platform (2) includes a platform frame (20), a plurality of connecting rods (21) and a plurality of diagonal bracing frames (22), the platform frame (20) is mounted on the diagonal bracing frames (22) via the connecting rods (21), the platform frame (20) includes a plurality of transverse rods (200) and a plurality of longitudinal rods (201), the plurality of longitudinal rods (201) are arranged in parallel and spaced relationship below the plurality of transverse rods (200) arranged in parallel and spaced relationship, the diagonal bracing frames (22) include four diagonal bracing legs (220), the four diagonal bracing legs (220) are arranged in two groups of figure-eight shapes, the top of each group of figure-eight shapes is connected via one of the connecting rods (21), and the diagonal bracing legs (220) are supported and connected to one end of the connecting rod (21) via the diagonal bracing rod; the transverse rod (200) is made of I-beam, and a plurality of positioning ribs (202) are vertically arranged on the transverse rod (200).

3. The construction method of the refuge floor at the top of the super-high atrium according to claim 2 is characterized in that: The high-altitude platform (2) is installed across the top of the atrium (11), and the bottom ends of the diagonal support legs (220) and the two ends of the connecting rod (21) are installed in the mounting holes (110) reserved on the walls on both sides of the top of the atrium (11).

4. The construction method of the refuge floor at the top of the super-high atrium according to claim 3 is characterized by: A connecting rib (111) is pre-buried in the mounting hole (110); a connecting cross bar (221) is provided at the bottom of the diagonal support leg (220), and the diagonal support leg (220) is connected to the connecting rib (111) via the connecting cross bar (221).

5. The construction method of the refuge floor at the top of the super-high atrium according to claim 2 is characterized in that: In the step three, the vertical poles constituting the first support frame (40) for the construction of the refuge floor are connected to the positioning ribs (202).

6. The construction method of the refuge floor at the top of the super-high atrium according to claim 5 is characterized in that: In the step three, the vertical poles constituting the second support frame (41) for the construction of the refuge floor cantilever slab are connected to the positioning ribs (202).

Images