Cantilever construction method for external facade of high-rise building

Abstract

The invention discloses a high-rise building facade cantilever construction method, and relates to the technical field of building facade cantilever construction. Comprising the steps that according to the layout of steel beams at the bottom of a steel corridor of a high-rise building structure, in combination with the load distribution requirement, a keel aluminum plate suspended ceiling is deeply designed and changed into a single unit plate form, a winch is arranged on an upper completed floor to serve as a vertical transport tool, a wind cable is assisted, and the unit plate is lifted to an operation layer; scientific planning is conducted on the construction technological process according to the actual operation process, and the construction technological process of the project is divided into three pieces; a D + 1 layer hoisting equipment placement area, a D layer installation operation layer and a ground layer construction preparation area are sequentially arranged from top to bottom. According to the construction method, through scientific planning and reasonable partitioning, all working links can be carried out in order, the construction efficiency is greatly improved, and the construction method is suitable for cantilever construction of the outer facade of the high-rise building and has high practicability and popularization value.

Description

Technical Field

[0001] The invention relates to the technical field of building facade cantilever construction, and in particular to a high-rise building facade cantilever construction method. Background Art

[0002] With the acceleration of urbanization, the number of high-rise buildings continues to increase, and the facade decoration and maintenance of high-rise buildings are becoming more and more important. The traditional high-rise building facade cantilever construction method has problems such as low efficiency, poor safety, and low precision, which can hardly meet the needs of modern high-rise buildings.

[0003] After searching, the Chinese patent application number CN202123331457.5 discloses an efficient construction system for super-high-rise cantilever structures, including a cantilever beam non-disassembly steel formwork, a cantilever plate non-disassembly steel formwork and a cantilever construction platform. The cantilever beam non-disassembly steel formwork is hoisted and assembled to the designed position in spans, and several spans of cantilever beam non-disassembly steel formworks are connected to each other to form a grid-shaped force-bearing whole. The cantilever plate non-disassembly steel formwork is fixedly laid on the cantilever beam non-disassembly steel formwork, and an operation port is provided on the plate surface corresponding to the top opening position of the cantilever beam non-disassembly steel formwork; the cantilever construction platform is correspondingly arranged below the joint position between spans of the cantilever beam non-disassembly steel formwork, and an operation frame is set up inside the platform. The efficient construction system for super-high-rise cantilever structures in the above-mentioned documents has the following shortcomings: although it can meet certain usage requirements, its operational flexibility is low, and it is difficult to modify and adjust. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cantilever construction method for the facade of a high-rise building.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cantilever construction method for a high-rise building facade, comprising: According to the layout of the bottom steel beams of the steel corridor of the high-rise building structure and the load distribution requirements, the detailed design of the keel aluminum plate ceiling was changed to the form of a single unit plate. A winch was set up on the upper completed floor as a vertical transportation tool, supplemented by a wind rope to lift the unit plate to the working floor; a slide rail and a hand winch were set up on the working floor as horizontal movement and height adjustment devices; a floor-penetrating hanging basket was used as an operating platform on the working floor to fix and install the bottom ceiling; The construction process was scientifically planned according to the actual operation process, and the construction process of the project was divided into three parts; from top to bottom, they are the D+1 floor hoisting equipment placement area, the D floor installation operation floor, and the ground floor construction preparation area; each area is subdivided according to its work content.

[0006] As a preferred embodiment of the present invention, the work contents of the D+1 layer hoisting equipment placement area include, in the order of implementation: SA1: Locate the lifting holes and perform drilling according to the designed plan; SA2: Locate the position of the winch and other related structures; SA3: Install the guide bracket and conduct an overall inspection.

[0007] As a preferred embodiment of the present invention, the work contents of the D-layer installation operation layer include, in the order of implementation: SB1: Install the hanging basket according to the designed plan; SB2: Arrange the guy ropes according to the design plan and conduct an overall inspection.

[0008] As a preferred embodiment of the present invention, the work contents of the ground layer construction preparation area include, in order of implementation: SC1: According to the design plan, assemble the unit aluminum panels of corresponding specifications and transport them to the designated location; SC2: Lifting and installation of the aluminum plate of the unit to be installed; SC3: Lifting process and monitor the lifting of unit aluminum plate.

[0009] As a preferred embodiment of the present invention, the exterior facade cantilever construction method comprises the following steps: S1: Preparation for lifting; S2: Overall hoisting of unit panels; S3: Lifting and changing hooks according to actual conditions; S4: Control the winch to lift; S5: The hanging basket is in place; S6: Installation of anti-sway device; S7: Manual hoist installation; S8: Adjust the positioning and fix it by welding; S9: Remove temporary facilities and complete the finishing.

[0010] As a preferred embodiment of the present invention, the hoisting preparation work of S1 is divided into the production and transportation of the unit floor, measurement and laying out, installation of the winch, and setting of the hanging basket, safety rope, and anti-sway rope; wherein the production and transportation of the unit floor includes: S11: Make the skeleton according to the set size; S12: Steel pedal fixed; S13: Lifting to the support frame position; S14: Aluminum plate installation.

[0011] As a preferred embodiment of the present invention: in the cantilevered facade construction method, during the construction phase, noise, water quality and dust monitoring are carried out on site; For noise detection: Test time: During the construction phase, the test is conducted once within 3 days after the start of construction, and once again after the construction is carried out normally. The measurement time is divided into two parts: daytime and nighttime. The nighttime measurement is carried out after 22:00. The test is carried out when there is no rain, no snow and light wind. When the wind level exceeds level 3, a wind shield is added, and the test is stopped when it exceeds level 4. Test method: The measurement is carried out when the noise is the largest. At the same measuring point, 5-7 values ​​are measured continuously. The interval between each reading is 5 seconds. The measured value is the average of 5-7 numbers.

[0012] As a preferred embodiment of the present invention, in the facade cantilever construction method, the installation arrangement scheme of each structure is specifically as follows: A pulley is installed on the concrete floor of the building through a pulley frame, a corrugated steel floor is arranged at the bottom of the concrete floor, a steel structure steel beam is installed at the bottom of the corrugated steel floor, a plurality of anti-sway devices are installed at the bottom of the steel structure steel beam, a unit plate connector is arranged inside the anti-sway device, a unit plate is installed at the bottom of the unit plate connector, and a winch ceiling is installed on the unit plate; One end of the winch wire rope of the winch passes through the pulley of the pulley frame and is connected to the temporary support frame.

[0013] As a preferred embodiment of the present invention: a hanging basket frame is installed on the top of the concrete floor, a hanging basket main steel wire rope and a hanging basket safety rope are connected to the hanging basket body of the hanging basket, and the hanging basket safety rope is arranged in the middle of the hanging basket body.

[0014] As a preferred embodiment of the present invention: a hanging basket anti-sway steel wire rope is arranged on the side of the hanging basket body.

[0015] The beneficial effects of the present invention are: 1. The construction method of the present invention enables each work link to be carried out in an orderly manner through scientific planning and reasonable zoning, greatly improving the construction efficiency. It is suitable for cantilever construction of the facade of high-rise buildings and has strong practicality and promotion value.

[0016] 2. The present invention adopts a floor-penetrating hanging basket as an operating platform, and is provided with an anti-sway device and a safety rope, which effectively ensures the safety of construction workers; through precise design and measurement, the accurate installation of various structural components is ensured, thereby improving the building quality; during the construction phase, environmental monitoring such as noise, water quality, and dust is carried out to reduce the impact of construction on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1A flow chart of a cantilever construction method for a high-rise building facade proposed by the present invention; Figure 2 This is a structural layout diagram of various devices in a high-rise building facade cantilever construction method proposed by the present invention.

[0018] In the figure: temporary support frame, 2-basket body, 3-basket anti-sway wire rope, 4-winch wire rope, 5-basket safety rope, 6-corrugated steel plate floor, 7-concrete floor, 8-steel structure steel beam, 9-anti-sway device, 10-unit plate, 11-unit plate connecting part, 12-pulley frame, 13-basket main wire rope, 14-basket frame, 15-winch ceiling. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the term "plurality" shall mean two or more.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Embodiment 1: A cantilever construction method for a high-rise building facade, such as Figure 1 As shown, including: According to the layout of the bottom steel beams of the steel corridor of the high-rise building structure and the load distribution requirements, the detailed design of the keel aluminum plate ceiling was changed to the form of a single unit plate. A winch was set up on the upper completed floor as a vertical transportation tool, supplemented by a wind rope to lift the unit plate to the working floor; a slide rail and a hand winch were set up on the working floor as horizontal movement and height adjustment devices; a floor-penetrating hanging basket was used as an operating platform on the working floor to fix and install the bottom ceiling; The construction process was scientifically planned according to the actual operation process and divided into three parts; from top to bottom, they are the D+1 floor hoisting equipment (winch, hanging basket) placement area, the D floor installation operation floor, and the ground floor construction preparation area; each area is subdivided according to its work content.

[0026] The work contents of the D+1 layer hoisting equipment (winch, hanging basket) placement area include: SA1: Locate the lifting holes and perform drilling according to the designed plan; SA2: Locate the position of the winch and other related structures; SA3: Install the guide bracket and conduct an overall inspection.

[0027] The D-layer installation work content includes the following in order of implementation: SB1: Install the hanging basket according to the designed plan; SB2: Arrange the guy ropes according to the design plan and conduct an overall inspection.

[0028] The work contents of the ground floor construction preparation area include, in order of implementation: SC1: According to the design plan, assemble the unit aluminum panels of corresponding specifications and transport them to the designated location; SC2: Lifting and installation of the aluminum plate of the unit to be installed; SC3: Lifting process and monitor the lifting of unit aluminum plate.

[0029] The processes in the three operating areas are coordinated with each other to ensure the principles of measures first, materials ahead, and safety synchronization.

[0030] The exterior facade cantilever construction method comprises the following steps as a whole: S1: Preparation for lifting; S2: Overall hoisting of unit panels; S3: Lifting and changing hooks according to actual conditions; S4: Control the winch to lift; S5: The hanging basket is in place; S6: Installation of anti-sway device; S7: Manual hoist installation; S8: Adjust the positioning and fix it by welding; S9: Remove temporary facilities and complete the finishing.

[0031] The hoisting preparation work of S1 is divided into the production and transportation of unit floor slabs, measurement and laying out, installation of winches, and setting of hanging baskets, safety ropes, and anti-sway ropes; the production and transportation of unit floor slabs includes: S11: Make the skeleton according to the set size; S12: Steel pedal fixed; S13: Lifting to the support frame position; S14: Aluminum plate installation.

[0032] Through scientific planning and reasonable zoning, the above construction method enables each work link to proceed in an orderly manner, greatly improving the construction efficiency. It is suitable for cantilever construction of the facades of high-rise buildings and has strong practicality and promotion value.

[0033] In addition, during the construction phase, noise, water quality, and dust monitoring were conducted on site; Among them, for dust monitoring: Monitoring is carried out during the peak period of dust-raising operations, using the L170208 portable microcomputer dust monitor; Among them, for noise detection: Test time: During the construction phase, the test is conducted once within 3 days after the start of construction, and once again after the construction is carried out normally. The measurement time is divided into two parts: daytime and nighttime. The nighttime measurement is carried out after 22:00. The test is carried out when there is no rain, no snow and light wind. When the wind level exceeds level 3, a wind shield is added, and the test is stopped when it exceeds level 4. Test method: The measurement should be carried out when the noise is the largest. At the same measuring point, 5-7 values ​​should be measured continuously. The interval between each reading is 5 seconds. The measured value is the average of 5-7 numbers.

[0034] Measuring point: located on the boundary line of the construction site and closest to the noise source.

[0035] Test instrument: HS5920 pocket noise monitor is selected.

[0036] Monitoring records: The tester shall fill in the records as required.

[0037] Post-test processing: When the test result is higher than the specified index, more stringent noise reduction measures will be taken.

[0038] In addition, priority is given to the use of energy-saving, high-efficiency and environmentally friendly construction equipment and tools recommended by the state and the industry on site.

[0039] The construction site sets electricity consumption control indicators for production, office and construction equipment respectively, and regularly conducts measurement, calculation, comparative analysis, and has preventive and corrective measures.

[0040] In the construction organization design, the construction sequence and working surface should be reasonably arranged to reduce the number of machines and tools in the operation area, and adjacent operation areas should make full use of the shared machine and tool resources. When arranging the construction process, priority should be given to the construction process that consumes electricity or other energy-saving construction processes. Avoid the phenomenon that the rated power of the equipment is much greater than the power used or the equipment is overloaded.

[0041] Establish a construction machinery and equipment management system, carry out electricity and oil consumption metering, improve equipment files, and perform maintenance work in a timely manner to keep the machinery and equipment in a low-consumption and high-efficiency state.

[0042] Select construction machinery and equipment with power matching the load on site to avoid long-term operation of high-power construction machinery and equipment at low load. Electromechanical equipment can use energy-saving machinery and equipment, such as inverter welding machines and handheld electric tools with low energy consumption and high efficiency, to save electricity. Machinery and equipment should use energy-saving oil additives, and consider recycling and saving oil when possible.

[0043] Arrange the work processes reasonably, improve the utilization rate and full load rate of various machines, and reduce the unit energy consumption of various equipment.

[0044] Taking advantage of the natural conditions of the site, rationally design the shape, orientation, spacing and window-to-wall area ratio of temporary production and office facilities to ensure they receive good sunlight, ventilation and lighting.

[0045] Temporary facilities should use energy-saving materials, and use materials with good thermal insulation properties for walls and roofs to reduce the use time and energy consumption of air-conditioning equipment in summer.

[0046] Reasonably allocate the number of air conditioners and fans, stipulate the use time, implement segmented and time-sharing use, and save electricity. For temporary electricity use, energy-saving wires and energy-saving lamps should be used first, and temporary power lines should be reasonably designed and arranged.

[0047] Temporary power equipment should use automatic control devices. Energy-saving lighting fixtures such as voice control and light control should be used.

[0048] The lighting design is based on the principle of meeting the minimum illumination, and the illumination should not exceed 20% of the minimum illumination.

[0049] Embodiment 2: A cantilever construction method for the facade of a high-rise building, in order to achieve reliable hoisting; Figure 2 As shown, in the exterior cantilever construction method, the installation and arrangement scheme of each structure is specifically as follows: A pulley is installed on the concrete floor 7 of the building through a pulley frame 12, a corrugated steel plate floor 6 is arranged at the bottom of the concrete floor 7, a steel structure steel beam 8 is installed at the bottom of the corrugated steel plate floor 6, a plurality of anti-sway devices 9 are installed at the bottom of the steel structure steel beam 8, a unit plate connector 11 is arranged inside the anti-sway device 9, a unit plate 10 is installed at the bottom of the unit plate connector 11, and a hoist ceiling 15 is installed on the unit plate 10; One end of the hoist wire rope 4 of the hoist passes through the pulley of the pulley frame 12 and is connected to the temporary support frame 1.

[0050] To improve safety; Figure 2 As shown, a hanging basket frame 14 is installed on the top of the concrete floor 7, and the hanging basket main steel wire rope 13 and the hanging basket safety rope 5 are connected to the hanging basket basket body 2 of the hanging basket. The hanging basket safety rope 5 is arranged in the middle of the hanging basket basket body 2, and the hanging basket anti-sway steel wire rope 3 is arranged on the side of the hanging basket basket body 2.

[0051] This construction method uses a floor-penetrating hanging basket as an operating platform, and is equipped with anti-sway devices and safety ropes to effectively ensure the safety of construction workers. Through precise design and measurement, it ensures the accurate installation of various structural components and improves the quality of construction.

[0052] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cantilever construction method for the facade of a high-rise building, characterized in that: include: According to the layout of the bottom steel beams of the steel corridor of the high-rise building structure and the load distribution requirements, the detailed design of the keel aluminum plate ceiling was changed to the form of a single unit plate. A winch was set up on the upper completed floor as a vertical transportation tool, supplemented by a wind rope to lift the unit plate to the working floor; a slide rail and a hand winch were set up on the working floor as horizontal movement and height adjustment devices; a floor-penetrating hanging basket was used as an operating platform on the working floor to fix and install the bottom ceiling; The construction process was scientifically planned according to the actual operation process, and the construction process of the project was divided into three parts; from top to bottom, they are the D+1 floor hoisting equipment placement area, the D floor installation operation floor, and the ground floor construction preparation area; each area is subdivided according to its work content.

2. A high-rise building facade cantilever construction method according to claim 1, characterized in that: The work contents of the D+1 layer hoisting equipment placement area include, in order of implementation: SA1: Locate the lifting holes and perform drilling according to the designed plan; SA2: Locate the position of the winch and other related structures; SA3: Install the guide bracket and conduct an overall inspection.

3. A high-rise building facade cantilever construction method according to claim 1, characterized in that: The D-layer installation work content includes, in order of implementation: SB1: Install the hanging basket according to the designed plan; SB2: Arrange the guy ropes according to the design plan and conduct an overall inspection.

4. A high-rise building facade cantilever construction method according to claim 1, characterized in that: The work contents of the ground floor construction preparation area include, in order of implementation: SC1: According to the design plan, assemble the unit aluminum panels of corresponding specifications and transport them to the designated location; SC2: Lifting and installation of the aluminum plate of the unit to be installed; SC3: Lifting process and monitor the lifting of unit aluminum plate.

5. A high-rise building facade cantilever construction method according to claim 1, characterized in that: The exterior facade cantilever construction method comprises the following steps as a whole: S1: Preparation for lifting; S2: Overall hoisting of unit panels; S3: Lifting and changing hooks according to actual conditions; S4: Control the winch to lift; S5: The hanging basket is in place; S6: Installation of anti-sway device; S7: Manual hoist installation; S8: Adjust the positioning and fix it by welding; S9: Remove temporary facilities and complete the finishing.

6. A high-rise building facade cantilever construction method according to claim 5, characterized in that: The hoisting preparation work of S1 is divided into the production and transportation of unit floor slabs, measurement and laying out, installation of winches, and setting of hanging baskets, safety ropes, and anti-sway ropes; wherein the production and transportation of the unit floor slabs includes: S11: Make the skeleton according to the set size; S12: Steel pedal fixed; S13: Lifting to the support frame position; S14: Aluminum plate installation.

7. A high-rise building facade cantilever construction method according to claim 5, characterized in that: In the exterior facade cantilever construction method, during the construction phase, noise, water quality, and dust monitoring are carried out on site; For noise detection: Test time: During the construction phase, the test is conducted once within 3 days after the start of construction, and once again after the construction is carried out normally. The measurement time is divided into two parts: daytime and nighttime. The nighttime measurement is carried out after 22:

00. The test is carried out when there is no rain, no snow and light wind. When the wind level exceeds level 3, a wind shield is added, and the test is stopped when it exceeds level 4. Test method: The measurement is carried out when the noise is the largest. At the same measuring point, 5-7 values ​​are measured continuously. The interval between each reading is 5 seconds. The measured value is the average of 5-7 numbers.

8. A high-rise building facade cantilever construction method according to claim 1, characterized in that: In the exterior cantilever construction method, the installation and arrangement scheme of each structure is specifically as follows: A pulley is installed on a concrete floor (7) of a building via a pulley frame (12); a corrugated steel floor (6) is arranged at the bottom of the concrete floor (7); a steel structure steel beam (8) is installed at the bottom of the corrugated steel floor (6); a plurality of anti-sway devices (9) are installed at the bottom of the steel structure steel beam (8); a unit plate connecting piece (11) is arranged inside the anti-sway device (9); a unit plate (10) is installed at the bottom of the unit plate connecting piece (11); and a hoisting ceiling (15) is installed on the unit plate (10); One end of the hoist wire rope (4) of the hoist passes through the pulley of the pulley frame (12) and is connected to the temporary support frame (1).

9. A high-rise building facade cantilever construction method according to claim 8, characterized in that: A hanging basket frame (14) is installed on the top of the concrete floor slab (7); a hanging basket main steel wire rope (13) and a hanging basket safety rope (5) are connected to the hanging basket body (2); and the hanging basket safety rope (5) is arranged in the middle of the hanging basket body (2).

10. A high-rise building facade cantilever construction method according to claim 9, characterized in that: A hanging basket anti-sway steel wire rope (3) is arranged on the side of the hanging basket body (2).

Images