Same-height alternating cycle construction method using steel plate combined shear wall structure

Abstract

A same-height alternating cycle construction method using an outer steel plate combined shear wall core tube and an outer steel frame structure, comprising the following steps: designing and arranging a suspended steel plate wall operating platform according to the inner tube structure; designing and arranging a beam-erecting operating platform according to the outer tube structure; hoisting and calibrating the steel plate wall, hoisting the L-shaped steel plate walls at the four corners of the core tube; installing the outer main beam and secondary beam of the core tube in turn after the steel column installation and calibration is completed; hoisting the double-hanging hoist cage in turn after the box-type connecting beam between the steel plate walls is calibrated, transporting the lower outer tube steel plate wall operating platform used for weld flaw detection and paint touch-up to the top floor, and workers pouring outer wall concrete on the outer tube steel plate wall operating platform; after the concrete pouring is completed, transporting the welding room and the isolated oxygen-acetylene cylinder storage platform to the top floor; hoisting and calibrating the upper section of the steel plate wall according to the previous process, and simultaneously installing the lower two layers of outer frame secondary beams and cantilevered edge beams.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure construction, in particular to a same-height alternating cycle construction method using an outer steel plate combined shear wall core tube and an outer steel frame structure. Background Art

[0002] At present, there are generally two types of super high-rise buildings that conventionally adopt the core tube-frame structure. One is that the core tube and the outer frame column beam slab are all made of reinforced concrete structure; the other is that the core tube adopts reinforced concrete structure and the outer frame column beam slab adopts steel-concrete structure (generally steel column steel beam + corrugated steel plate composite floor) composite structure. However, there are very few super high-rise application cases that adopt the core tube-external steel frame (steel tube concrete column + steel beam) structure with external steel plate composite shear wall. This kind of structure has a strong logical installation sequence, high safety risks, a large amount of on-site welding of steel columns and steel plate walls, and needs to be poured with concrete; how to simultaneously meet the requirements of alternating circulation and water construction of the core tube and outer frame structure at the same height and safe passage of personnel at high altitude has always been a difficult problem. Conventionally, this kind of super high-rise building construction adopts climbing frame construction, following the construction method of "core tube steel plate wall first, outer frame closely followed, and core tube steel beam last" with unequal heights and synchronous climbing. With the existing construction method, the construction of the super-high-rise outer frame structure lags far behind the construction of the core tube, which will seriously delay the construction period. In addition, due to the obstruction of the climbing frame, the horizontal structure in the core tube needs to be installed later. When constructing the horizontal structure of the core tube and the outer frame, there is a steel plate wall construction above, which increases the risk of falling objects from high altitude and poses corresponding safety hazards. In addition, the cost of the climbing frame is high, resulting in high construction costs. Summary of the invention

[0003] The purpose of the present invention is to provide a method for solving the problems of alternating circulation flow construction of the core tube and the outer frame structure of a super-high-rise external steel plate combined shear wall structure at the same height and the safe passage of personnel at high altitude.

[0004] In order to achieve the above object, the present invention is achieved in the following ways:

[0005] A same-height alternating cycle construction method using an outer steel plate combined shear wall core tube and an outer steel frame structure, characterized by: comprising:

[0006] Step 1: Design and arrange a large suspended steel plate wall operating platform (7) according to the internal structure of the tube;

[0007] Step 2: Design and arrange a beam-type operating platform (5, 14) according to the outer tube structure form;

[0008] Step 3: First, install the steel plate wall and start calibration.

[0009] Step 3.1, using a lifting machine (15) to hoist the L-shaped steel plate walls (6) at the four corners of the core tube;

[0010] Step 3.2, except for the four corner L-shaped steel plate walls (6), the remaining exterior walls (8) are installed in sequence along the L-shaped steel plate walls (6) toward the middle connecting beam, and then the interior walls (12) are hoisted;

[0011] Step 3.3, the steel plate walls are corrected in sequence, and the outer frame steel columns (3) are hoisted at the same time, and the box-type connecting beams (13) and the core tube inner beams (10) are inserted between the steel plate walls after the hoisting and correction are completed;

[0012] Step 4: After the steel column installation and correction is completed, the main beam (11) and the secondary beam (9) outside the core tube are installed in sequence, and then the workers weld the steel column (3) on the steel column operating platform (2);

[0013] Step 5, after the box-type connecting beam (13) between the steel plate walls is calibrated, the double hanging cages (16) are hoisted in sequence, and the workers weld the box-type connecting beam butt welds on the double-side hanging cages. After the box-type connecting beam welding is completed, the workers stand on the beam-laying operation platform (5) inside and outside the steel plate wall and the hanging steel plate wall operation platform (7) to weld the transverse butt welds of the steel plate wall;

[0014] Step 6: After the welding of the box-type connecting beam is completed, the double-sided hoist cages (16) are hoisted to the ground, and then the outer tube steel plate wall operation platform (14) at the bottom, which is used for weld flaw detection and paint repair work, is transported to the top floor, and workers pour the outer wall concrete on the outer tube steel plate wall operation platform (14);

[0015] Step 7: During the pouring of the exterior wall, the suspended steel plate wall operation platform (7) and the outer frame column operation platform (2) are sequentially transported, and then workers pour the interior wall and outer frame column concrete on the platform, leaving the outer beam operation platform (5) for subsequent weld flaw detection, paint re-application and finishing work;

[0016] Step 8: After the concrete pouring is completed, the welding room (4) and the isolated oxygen and acetylene cylinder storage platform (1) are transported to the top floor;

[0017] Step 9: hoist and calibrate the upper section of the steel plate wall (6) according to the previous process, and install the lower two layers of outer frame secondary beams (17) and cantilevered edge beams (11) at the same time.

[0018] Compared with traditional construction schemes, this method has the following advantages:

[0019] 1. Speed ​​up construction, improve installation efficiency, and have higher safety;

[0020] 2. Meet the construction requirements of alternating and cyclic construction of the core tube and outer frame structure at the same height and safe passage of personnel at high altitude;

[0021] 3. If the traditional climbing frame is used for construction, the steel bracket of the cantilever truss of the super high-rise refuge layer will conflict with the climbing frame, and a corresponding treatment plan needs to be designed. However, this problem does not exist when the method of the present invention is used;

[0022] 4. If the traditional climbing frame unequal height construction method is adopted, when the horizontal structure and outer frame in the core tube are constructed, there is a steel plate wall core tube construction above, the risk of falling objects from high altitude increases, and there are corresponding safety hazards. However, by adopting the present invention, the safety hazards are greatly reduced;

[0023] 5. The rental cost of traditional climbing frames is extremely high. Compared with traditional climbing frame construction, the present invention can greatly save construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of the construction method shown in the present invention.

[0025] Figure 2 Schematic diagram of step 1 in the present invention Figure 1 .

[0026] Figure 3 Schematic diagram of step 1 in the present invention Figure 2 .

[0027] Figure 4 Schematic diagram of step 2 in the present invention Figure 1 .

[0028] Figure 5 Schematic diagram of step 2 in the present invention Figure 2 .

[0029] Figure 6 Schematic diagram of step 2 in the present invention Figure 3 .

[0030] Figure 7 It is a schematic diagram of step 3 in the present invention.

[0031] Figure 8 It is a schematic diagram of step 4 in the present invention.

[0032] Fig. 9 This is a schematic diagram of step 5 in the present invention. Figure 1 .

[0033] Fig.10 This is a schematic diagram of step 5 in the present invention. Figure 2 .

[0034] Fig.11 It is a schematic diagram of step 6 in the present invention.

[0035] Fig.12 It is a schematic diagram of step 7 in the present invention.

[0036] Fig.13 It is a schematic diagram of step 8 in the present invention.

[0037] Fig.14 It is a schematic diagram of step 9 in the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described below by means of specific examples.

[0039] like Figure 1 to Figure 14 The same-height alternating cycle construction method using an external steel plate combined shear wall core tube and an external steel frame structure is shown, specifically including:

[0040] Step 1. The core tube structure of the super-high-rise steel plate composite shear wall has many secondary beams (10) inside the tube, irregular distribution of steel beams, and small space. The space inside the core tube can only meet the transportation of one set of operating platforms, and there is no steel beam support under some operating platforms inside the tube. A large suspended steel plate wall operating platform (7) is designed and adopted according to the structure inside the tube; while the span of the beam outside the tube (that is, the outer frame beam) is large, and the steel beams are evenly and regularly distributed. According to the structure outside the tube, a beam-type operating platform (5, 14) is designed. The space between the steel beams outside the tube is large to meet the transportation of two sets of platforms. Therefore, two sets of platforms are designed and adopted outside the tube, one for welding, steel plate wall concrete pouring, and personnel passage, and the other for subsequent weld flaw detection, paint re-coating and other finishing work. Attachment Figure 1 The standard starting layer is installed. The status is that the construction of the steel columns (3), steel plate walls (6, 8, 12), and steel beams (9, 10) on the same layer is completed and the concrete pouring is completed before entering the next section of steel structure construction. In addition to the internal and external operating platforms (5, 7, 14) used in the core tube, the installation measures also include a conventional steel column operating platform (2), a welding room (4), an isolated oxygen and acetylene cylinder storage platform (1), and a double-sided hanging cage (16).

[0041] Step 2: First, the steel plate wall is hoisted and calibrated. First, the L-shaped steel plate walls (6) at the four corners of the core tube are hoisted by a lifting machine (15). Except for the L-shaped steel plate walls at the four corners, the remaining exterior walls (8) are installed in sequence along the L-shaped wall toward the middle connecting beam, and finally the interior wall (12) is hoisted.

[0042] Step 3: The steel plate walls are corrected in sequence, and at the same time, the outer frame steel columns (3) are hoisted, and the box beams (13) and the core tube inner beams (10) are inserted between the steel plate walls after the hoisting and correction.

[0043] Step 4: After the steel column installation and correction is completed, the main beam (11) and the secondary beam (9) outside the core tube are installed in sequence, and then the workers weld the steel column (3) on the steel column operating platform (2).

[0044] Step 5: After the box-type connecting beams (13) between the steel plate walls are calibrated, the double hanging cages (16) are hoisted in sequence, and workers weld the box-type connecting beams on the hanging cages on both sides. After the box-type connecting beams are welded, the workers stand on the inner and outer operating platforms (5, 7) of the steel plate walls to weld the transverse butt welds of the steel plate walls.

[0045] Step 6: After the welding of the box-type connecting beam is completed, the double-sided hoist cages (16) are hoisted to the ground, and then the outer tube steel plate wall operation platform (14) at the bottom, which is used for weld flaw detection and paint repair work, is transported to the top floor. Workers pour the outer wall concrete on the outer tube steel plate wall operation platform (14).

[0046] Step 7: During the pouring of the exterior wall, the suspended steel plate wall operation platform (7) and the outer frame column operation platform (2) are sequentially transported, and then workers pour the interior wall and outer frame column concrete on the platform, leaving a beam-type operation platform (5) outside the tube for subsequent finishing work such as weld flaw detection and paint re-application.

[0047] Step 8: After the concrete pouring is completed, the welding room (4) and the isolated oxygen and acetylene cylinder storage platform (1) are transported to the top floor;

[0048] Step 9: hoist and calibrate the upper section of the steel plate wall (6) according to the previous process, and install the lower two layers of outer frame secondary beams (17) and cantilevered edge beams (11) at the same time.

Claims

1. A same-height alternating cycle construction method using an outer steel plate combined shear wall core tube and an outer steel frame structure, characterized by: include Step 1: Design and arrange a large suspended steel plate wall operating platform (7) according to the internal structure of the tube; Step 2: Design and arrange a beam-type operating platform (5, 14) according to the outer tube structure form; Step 3: First, install the steel plate wall and start calibration. Step 3.1, using a lifting machine (15) to hoist the L-shaped steel plate walls (6) at the four corners of the core tube; Step 3.2, except for the four corner L-shaped steel plate walls (6), the remaining exterior walls (8) are installed in sequence along the L-shaped steel plate walls (6) toward the middle connecting beam, and then the interior walls (12) are hoisted; Step 3.3, the steel plate walls are corrected in sequence, and the outer frame steel columns (3) are hoisted at the same time, and the box-type connecting beams (13) and the core tube inner beams (10) are inserted between the steel plate walls after the hoisting and correction are completed; Step 4: After the steel column installation and correction is completed, the main beam (11) and the secondary beam (9) outside the core tube are installed in sequence, and then the workers weld the steel column (3) on the steel column operating platform (2); Step 5, after the box-type connecting beam (13) between the steel plate walls is calibrated, the double hanging cages (16) are hoisted in sequence, and the workers weld the box-type connecting beam butt welds on the double-side hanging cages. After the box-type connecting beam welding is completed, the workers stand on the beam-laying operation platform (5) inside and outside the steel plate wall and the hanging steel plate wall operation platform (7) to weld the transverse butt welds of the steel plate wall; Step 6: After the welding of the box-type connecting beam is completed, the double-sided hoist cages (16) are hoisted to the ground, and then the outer tube steel plate wall operation platform (14) at the bottom, which is used for weld flaw detection and paint repair work, is transported to the top floor, and workers pour the outer wall concrete on the outer tube steel plate wall operation platform (14); Step 7: During the pouring of the exterior wall, the suspended steel plate wall operation platform (7) and the outer frame column operation platform (2) are sequentially transported, and then workers pour the interior wall and outer frame column concrete on the platform, leaving the outer beam operation platform (5) for subsequent weld flaw detection, paint re-application and finishing work; Step 8: After the concrete pouring is completed, the welding room (4) and the isolated oxygen and acetylene cylinder storage platform (1) are transported to the top floor; Step 9: hoist and calibrate the upper section of the steel plate wall (6) according to the previous process, and install the lower two layers of outer frame secondary beams (17) and cantilevered edge beams at the same time.

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