High-altitude dome curtain wall structure and construction method

Abstract

The invention relates to a high-altitude dome curtain wall structure and a construction method. The high-altitude dome curtain wall structure comprises an annular base, a foundation framework, a secondary framework, an adjusting auxiliary frame and a daylighting roof. The annular base is horizontally fixed on a top floor slab; the basic framework is fixed on the annular base; an adapter is fixed on the annular base and the basic framework; the secondary framework is mounted on the adapter; the adjusting auxiliary frame is fixed on the secondary framework; and the daylighting roof is fixed on the adjusting auxiliary frame. The secondary keel is additionally built between the basic keel and the daylighting roof, the secondary keel is installed on the basic keel through the adapter, the daylighting roof is installed on the secondary keel through the adjusting auxiliary frame, and compared with an existing method that the daylighting roof is directly and rigidly connected to a basic framework, two connecting joints are additionally formed; therefore, two-stage gradient adjustment is additionally formed, the light-transmitting plate has a larger and more flexible adjustment range, the construction precision is improved, the light-transmitting plate is prevented from warping or deforming, the shock resistance is enhanced, and friction noise is effectively eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of curtain wall construction, and in particular to a high-altitude dome curtain wall structure and a construction method. Background Art

[0002] As a complex spatial structure, the large curvature dome is widely used in modern buildings such as skylights, gymnasiums, and exhibition halls. Its unique geometric shape and mechanical properties bring beauty and functionality to architectural design.

[0003] Traditional flat or small curvature skylights are usually directly fixed on the base frame, and the slope is adjusted mainly by on-site cutting or adding pads to the connectors. Due to the rapid change of the curvature of the dome structure from the center to the edge, the base frame and the light-transmitting plate need to be accurately adjusted according to the actual curvature. The existing construction method is difficult to adapt, and there are the following problems: (1) The adjustment range of the light-transmitting sheet is limited and it cannot effectively adapt to the slope difference. There are problems such as uneven nodes and loose connectors, which may even cause the light-transmitting sheet to warp or deform, affecting the mechanical properties and visual quality of the overall structure.

[0004] (2) It depends on the accuracy of the foundation skeleton. However, in actual construction, in order to ensure the stability of the foundation skeleton with large curvature, the foundation skeleton is mainly obtained by continuous welding and splicing of steel units. There is a slope between each steel unit and they need to be enclosed into a closed arch structure in the end. The construction is relatively difficult and it is difficult to avoid large construction errors.

[0005] (3) The anti-seismic performance and deformation and shrinkage performance are both poor. The skylight is directly fixed on the foundation frame. The skylight and the foundation frame are mainly rigidly connected. The anti-seismic performance and deformation and shrinkage performance of the skylight are both poor. Under the influence of other external forces such as wind pressure, temperature, and settlement, friction noise is easily generated, and it is difficult to eliminate deformation, which affects its bearing capacity and durability.

[0006] Based on this, it is necessary to study a high-altitude dome curtain wall structure and construction method. Summary of the invention

[0007] In view of this, the purpose of the present invention is to provide a high-altitude dome curtain wall structure and construction method, which can effectively solve the problems of poor slope adjustment ability, poor earthquake resistance and poor shrinkage and deformation ability of the translucent plate materials in the existing skylight construction structure and process.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is: A high-altitude dome curtain wall structure, comprising an annular base, a basic frame, a secondary frame, an adjustable auxiliary frame and a skylight; The annular base is horizontally fixed on the top floor slab; The basic frame is fixed on the annular base, and the basic frame is an arched, mesh-like structure; A plurality of adapters are fixed at intervals on the annular base and the basic frame; The secondary frame includes a plurality of purlin units arranged along the basic frame, and the ends of the purlin units are respectively mounted on a corresponding adapter, so that the secondary frames are arranged above the basic frame at corresponding intervals; The adjustable auxiliary frame includes a fixed part and a rotating part which are hingedly connected, and the fixed part is fixed to the upper end surface of the purlin unit; The skylight roof comprises a plurality of light-transmitting plates connected by splicing, and the edges of the light-transmitting plates are fixed on the rotating part; A deformation shrinkage gap is maintained between the adjacent light-transmitting plates, and the deformation shrinkage gap is filled with sealant.

[0009] Furthermore, the annular base includes a base and an annular seat, the base is fixedly connected to the top floor, the annular seat is horizontally fixed on the base, the cross-section of the annular seat is circular, an adapter seat is fixed on the annular seat, and an extension line of the adapter seat passes through the center of the cross-section of the annular seat.

[0010] Furthermore, the top floor slab includes a steel structure and a concrete layer, the concrete layer is arranged on the steel structure; the base is fixed on the steel structure; and an annular prefabricated drainage ditch is arranged between the annular seat and the concrete layer.

[0011] Furthermore, the concrete layer is provided with an annular protective step around the prefabricated drainage trough, the top of the protective step is covered and fixed with a water retaining plate, and the water retaining plate is sealingly connected to the top of the prefabricated drainage trough on one side close to the protective step.

[0012] Furthermore, a drainage plate is fixedly connected between the side of the prefabricated drainage trough close to the skylight roof and the skylight roof, and the drainage plate is inclined from top to bottom toward the prefabricated drainage trough; one end of the drainage plate is fixed on the purlin unit located at the edge of the secondary frame and is sealed with the light-transmitting plate, and the other end of the drainage plate is sealed with the top of the prefabricated drainage trough.

[0013] Furthermore, a bracket is fixedly connected between the annular seat and the concrete layer, and the bracket is also fixedly connected to the steel structure, the protective step and the annular base, and the prefabricated drainage trough is fixed on the upper surface of the bracket; a bottom support plate is fixedly connected to the lower surface of the bracket, and thermal insulation rock wool is arranged between the prefabricated drainage trough and the bottom support plate.

[0014] A construction method of a high-altitude dome curtain wall structure, using the above-mentioned high-altitude dome curtain wall structure, comprises the following steps: S100: Build the main support structure; The basic frame of the dome is assembled and constructed on the annular base to obtain the main supporting structure; S200: first measurement and setting out; Select and mark the initial control points in the dome area on the top floor slab, perform the first measurement and layout based on the initial control points, and construct a coordinate system. The initial control points include horizontal control points and axis control points; S300: Install the main support structure; Lift the main supporting structure to the dome area on the top floor slab, and fix the annular base on the top floor slab accordingly based on the initial control point; S400: generating secondary control points; Measure and verify the main supporting structure and conduct deviation analysis; According to the theoretical position and deviation analysis results provided by the design drawings, combined with the coordinate system of the initial control points, select and identify the secondary control points; S500: calibrate the support point; Take the secondary control point as the reference to carry out the second layout measurement, and mark the support points on the upper surface of the annular base and the foundation frame; S600: Install the adapter; Fix the adapter on the supporting point, and adjust the length of the adapter to make a first-level slope adjustment to adjust the up and down position and inclination angle of the purlin unit to be installed later; S700: splicing secondary skeleton; Installing purlin units along the basic frame and between two adjacent adapters to obtain a secondary frame; S800: Install the attached frame; Fixing the fixing portion of the adjusting auxiliary frame on the upper end surface of the purlin unit; S900: Install the skylight; The edge of the light-transmitting plate is bonded and fixed to the rotating part of the adjusting auxiliary frame, and the light-transmitting plate is rotated by adjusting the auxiliary frame to adjust the secondary slope; the light-transmitting plates are continuously installed to form a continuous lighting roof; S1000: waterproof sealing treatment; Use sealant to seal and fill the deformation and shrinkage joints between the light-transmitting panels to ensure the sealing of the skylight.

[0015] Furthermore, in step S400, the main support structure is measured and verified and deviation analysis is performed through the following steps: S410: Scan the main support structure; Taking the initial control point as the coordinate origin, use a 3D scanner to scan the main support structure to obtain comprehensive point cloud data; S420: Generate a three-dimensional model; Based on the point cloud data, a three-dimensional model of the main support structure is constructed; S430: Deviation analysis; Compare the 3D model with the design drawings, analyze the deviation between the actual structure and the design, including the location of key nodes and slopes, and obtain the deviation analysis results.

[0016] Furthermore, the steps S600 and S700 further include step S650: setting security measures; Safety measures include a safety rope, with a safety rope tie-up point set at the center of the base frame, and the safety rope suspended radially from the center to the surrounding areas; Lay a springboard on the working surface on the foundation frame; The safety rope and the springboard divide the working surface into a plurality of circularly distributed construction areas; In the step S700, the secondary skeleton is spliced ​​in different regions.

[0017] Furthermore, the safety measures also include a protective net located below the working surface, wherein the protective net is provided with multiple layers at intervals from top to bottom, and each layer of the protective net includes an interception rope and a safety flat net; the ends of the interception ropes are fixed to the main body of the building, the interception ropes are staggered to form an interception skeleton, and the staggered points are fixed and locked with lock buckles; the safety flat net is laid on the interception skeleton; The interception skeleton at the top layer has the smallest density; the interception skeleton at the second layer uses subdivision ropes to divide its grid, and the diameter of the subdivision rope is smaller than the interception rope.

[0018] The beneficial effects of the above technical solution are: (1) The present invention sets an adapter on the basic frame and builds a secondary keel on the adapter. The first-level slope adjustment can be performed by adjusting the length of the adapter to adjust the upper and lower positions and inclination angles of the purlin units to correct the deviations generated when the basic frame is spliced ​​and built. Compared with the method of adding pads to the connectors, this adjustment method has a larger adjustment range and can effectively adjust the problems of large deviations and irregular slopes of the basic frame, avoiding further accumulation of errors and causing the final light-transmitting plate to warp or deform. The adapter creates a gap between the secondary frame and the basic frame to avoid direct contact between the secondary frame and the basic frame, forming stress isolation, reducing the transmission and damage of external forces, and avoiding friction noise caused by relative displacement between the two under wind pressure or other external forces.

[0019] (2) The present invention installs the skylight on the secondary keel by adjusting the auxiliary frame. The light-transmitting plate can be rotated by adjusting the auxiliary frame to adjust the secondary slope, thereby further eliminating errors and ensuring the accuracy of the slope of the light-transmitting plate. On the other hand, adjusting the auxiliary frame also allows a gap to be maintained between the light-transmitting plate and the secondary keel to avoid direct contact between the secondary frame and the skylight, thereby forming stress isolation, reducing the transmission and damage of external forces, and avoiding friction noise caused by relative displacement between the two under the action of wind pressure or other external forces.

[0020] (3) In the present invention, gaps are maintained between the light-transmitting plates to form deformation shrinkage joints, and the deformation shrinkage joints are filled with sealant. While playing the role of dome sealing, elastic contact between the light-transmitting plates is also achieved, providing space for structural deformation. When facing external forces such as vibration and wind pressure, the light-transmitting plates can expand and contract relatively and absorb deformation, thereby reducing stress transfer and friction noise caused by relative displacement of adjacent lighting plates.

[0021] (4) After the main support structure of the present invention is completed, the three-dimensional scanner technology verifies the deviation size of the structural skeleton, generates secondary control points and reconstructs the coordinate system, so that the support point position of the fixed adapter can be selected under the adjusted coordinate system, thereby eliminating the installation error of the main support structure, reducing the dependence on the accuracy of the basic skeleton, reducing the difficulty of construction, and ensuring the installation accuracy of the subsequent secondary keel and skylight.

[0022] (5) In summary, the present invention constructs an additional secondary keel between the basic keel and the skylight, and the secondary keel is installed on the basic keel through an adapter, and the skylight is installed on the secondary keel by adjusting the auxiliary frame. Compared with the existing method of directly and rigidly connecting the skylight to the basic frame, two additional connection nodes are formed, thereby additionally forming two levels of slope adjustment, so that the light-transmitting plate has a larger and more flexible adjustment range, so as to eliminate the error of the basic frame, and the accuracy requirements for the basic frame are relatively low, which improves the construction accuracy, prevents the light-transmitting plate from warping or deformation, and improves the mechanical properties and visual quality of the overall structure. The two connection nodes provide additional elastic shrinkage deformation capacity, and have a certain elastic deformation capacity when facing external forces such as vibration and wind pressure. Compared with the method of directly and rigidly connecting the skylight to the basic frame, the anti-seismic ability is enhanced, the friction noise is effectively eliminated, and the bearing capacity and durability of the dome are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the dome structure of the present invention; Figure 2 for Figure 1 A partial enlarged view of the node at A; Figure 3 for Figure 1 A partial enlarged view of the node at B in the middle; Figure 4 for Figure 2 A partial enlarged view of the node at C in the middle; Figure 5 It is a side cross-sectional schematic diagram of the dome structure and the floor building of the present invention; Figure 6 A top view of the interception skeleton of the second layer.

[0024] Figure numerals: 1 is an annular base, 2 is a basic frame, 3 is a secondary frame, 4 is an adjustable auxiliary frame, 5 is a skylight, 6 is a top floor slab, 7 is an adapter, 8 is a sealant, 9 is a prefabricated drainage trough, 10 is a drainage plate, 11 is a bracket, 12 is thermal insulation rock wool, 13 is a protective net, 14 is a bottom support plate, 101 is a base, 102 is an annular seat, 301 is a purlin unit, 401 is a fixed part, 402 is a rotating part, 501 is a light-transmitting plate, 601 is a steel structure, 602 is a concrete layer, 603 is a protective step, 604 is a water retaining board, 1301 is an intercepting rope, and 1302 is a subdivision rope. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: The present embodiment aims to provide a high-altitude dome curtain wall structure, which is mainly used for the installation and construction of large-curvature skylight dome curtain walls, and aims to solve the problems of poor slope adjustment ability, poor earthquake resistance and poor shrinkage and deformation ability of the light-transmitting panels in the existing skylight construction structure and process.

[0026] A high-altitude dome curtain wall structure, such as Figure 1-Figure 4 , including an annular base 1, a basic frame 2, a secondary frame 3, an adjustable auxiliary frame 4 and a skylight 5. The annular base 1 is horizontally welded and fixed on the top floor 6. Specifically, the top floor 6 includes a steel structure 601 and a concrete layer 602. The concrete layer 602 is arranged on the steel structure 601. Before construction, a circular dome construction area is reserved on the top floor 6, such as Figure 2 The annular base 1 includes a base 101 and an annular seat 102. The base 101 is welded and fixedly connected to the steel structure 601 of the top floor slab 6. The annular seat 102 is horizontally welded and fixed on the base 101 to provide a lap foundation for the basic frame 2. The basic frame 2 is welded and fixed on the annular base 1. The basic frame 2 is an arched, meshed structure with triangular meshes, which are used to cooperate with the triangular light-transmitting plate 501 to form an arched skylight 5. The basic frame 2 is mainly obtained by continuous welding and splicing of a number of steel units. The steel units are staggered, gradually spliced ​​from the edge to the middle, and finally enclosed into a closed arched structure. The annular base 1 and the basic frame 2 are combined to form the main support structure of the dome, providing a stable and reliable fixed support foundation for other curtain wall structures.

[0027] like Figures 2 to 4 A plurality of adapters 7 are fixed at intervals on the annular base 1 and the basic frame 2 for installing the secondary keel; two adapters 7 form a group, corresponding to a purlin unit 301 on the secondary keel. Figure 2 and Figure 3The adapter seat 7 located on the annular seat 102 of the annular base 1 is used to fix the edge of the secondary skeleton 3 to the annular seat 102. Since the secondary skeleton 3 has a curvature, there is an angle between the edge of the secondary keel and the annular seat 102. In this regard, the cross-section of the annular seat 102 is circular, and the extension line of the adapter seat 7 welded and fixed on the annular seat 102 passes through the center of the cross-section of the annular seat 102, so that the axis of the annular seat 102 is compressed. Compared with a rectangular or other cross-sectional structure, it can avoid the formation of pressure component force and has better bearing capacity.

[0028] The secondary frame 3 includes a plurality of purlin units 301 arranged along the basic frame 2. The purlin units 301 are made of aluminum alloy purlins. The ends of each purlin unit 301 are respectively installed on a corresponding adapter 7, so that the secondary frame 3 is arranged above the basic frame 2 at intervals, that is, the left and right ends of each purlin unit 301 are respectively connected to an adapter 7, so as to splice on the basic frame 2 to form the secondary frame 3, and a gap is formed between the secondary frame 3 and the basic frame 2 to avoid direct contact between the secondary frame 3 and the basic frame 2, thereby forming stress isolation, reducing the transmission and damage of external force, and avoiding friction noise caused by relative displacement between the two under wind pressure or other external forces.

[0029] Both ends of the purlin unit 301 are provided with long holes extending along the length direction and passing through the width direction. The adapter 7 is provided with mounting holes corresponding to the long holes. Bolt kits are used to pass through the long holes and the mounting holes to mount the ends of the purlin unit 301 on the adapter 7, so that the purlin unit 301 can be adjusted in position along the length direction. Flexible gaskets are used in combination to give the installation nodes a buffering capacity, reduce hard contact, and improve seismic performance.

[0030] The adjustment auxiliary frame 4 includes a fixed part 401 and a rotating part 402 which are hingedly connected. A pressure plate is fixed to the upper end surface of the purlin unit 301 by screws. The pressure plate presses and fixes the fixed part 401 to the upper end surface of the purlin unit 301. An elastic gasket is arranged between the fixed part 401 and the purlin unit 301, which can provide a buffering effect and fine-tune the upper and lower positions by adjusting the thickness of the gasket.

[0031] like Figures 1 to 4 The skylight 5 includes a plurality of light-transmitting plates 501 connected by splicing. The light-transmitting plates 501 are made of Low-E fully tempered glass. The edges of the light-transmitting plates 501 are fixed to the rotating part 402 by structural adhesive to form a flexible fixed node. Figure 4A deformation shrinkage gap is maintained between adjacent light-transmitting plates 501, and the deformation shrinkage gap is filled with sealant 8. The sealant 8 adopts EPDM sealing strip, which can not only play the role of dome sealing, but also isolate the two adjacent light-transmitting plates 501, reduce the hard contact between the light-transmitting plates 501, isolate the transfer of stress, and provide space for structural deformation, avoiding friction noise caused by the relative movement of adjacent lighting plates.

[0032] In this embodiment, Figure 2 In order to improve the drainage capacity of the dome structure, an annular prefabricated drainage ditch 9 is provided between the annular seat 102 and the concrete layer 602. Specifically, a bracket 11 is welded and fixedly connected between the annular seat 102 and the concrete layer 602. The bracket 11 is welded and fixedly connected to the steel structure 601, the protective step 603 and the annular base 1 at the same time. The prefabricated drainage ditch 9 is screwed to the upper surface of the bracket 11 to collect and transport rainwater flowing down from the dome. The lower surface of the bracket 11 is fixedly connected to a bottom support plate 14. Insulating rock wool 12 is provided between the prefabricated drainage ditch 9 and the bottom support plate 14, so as to insulate the connection node between the dome and the top floor slab 6 and the installation node of the prefabricated drainage ditch 9, thereby ensuring the integrity of the insulation effect of the top floor slab 6.

[0033] The concrete layer 602 is provided with an annular protective step 603 around the prefabricated drainage ditch 9. The top of the protective step 603 is covered and fixed with a water retaining plate 604. The water retaining plate 604 is connected to the top of the prefabricated drainage ditch 9 on one side close to the protective step 603. The connection node is filled with a sealing strip to ensure a sealed connection to prevent the formation of a gap between the prefabricated drainage ditch 9 and the floor structure, thereby preventing rainwater from entering the insulating rock wool 12 through the gap and then leaking into the building.

[0034] A drainage plate 10 is fixedly connected between the side of the prefabricated drainage trough 9 close to the skylight roof 5 and the skylight roof 5, and the drainage plate 10 is inclined from top to bottom toward the prefabricated drainage trough 9; one end of the drainage plate 10 is screwed to the purlin unit 301 located at the edge of the secondary frame 3, and is sealed and bonded to the light-transmitting plate 501, and the other end of the drainage plate 10 is sealed and bonded to the top of the prefabricated drainage trough 9, and the two connection nodes are filled with sealing strips to ensure a sealed connection to prevent the formation of gaps, thereby preventing rainwater from entering the insulation rock wool 12 through the gaps and then leaking into the building.

[0035] A construction method of a high-altitude dome curtain wall structure, applied to the above-mentioned high-altitude dome curtain wall structure, comprises the following steps: S100: Build the main support structure; The basic frame 2 of the dome is assembled and constructed on the annular base 1 to obtain the main support structure; specifically, the steel units are welded and assembled on the annular base 1, and the steel units are welded and assembled continuously from the edge to the middle, and the steel units are arranged in a staggered manner to finally enclose a closed arched basic frame 2. This step is constructed on the ground.

[0036] S200: first measurement and setting out; Initial control points are selected and marked in the dome area on the top floor slab 6, and the first measurement and layout are carried out based on the initial control points to construct a coordinate system. The initial control points include horizontal control points and axis control points, which are mainly used to correctly install the main support structure in the dome area.

[0037] S300: Install the main support structure; The main supporting structure is hoisted to the dome area on the top floor slab 6 , and the annular base 1 is welded and fixed to the steel structure 601 of the top floor slab 6 based on the initial control point.

[0038] S400: generating secondary control points; Since the basic skeleton 2 is obtained by continuous welding, the steel units cannot be adjusted in position after being fixed. There is a slope between the steel units and they need to be finally enclosed into a closed arch structure. The construction is difficult and it is difficult to avoid large construction errors. In order to prevent the errors of the basic skeleton 2 from being accumulated in the subsequent steps, this step measures and verifies the main support structure and performs deviation analysis.

[0039] Since the spatial geometric features of the main support structure are relatively complex, measurement is difficult and prone to errors. In order to avoid measurement errors, this embodiment uses a three-dimensional scanner, a total station and a theodolite to scan and verify the deviation size of the structure skeleton, and uses the characteristics of the instrument to perform targeted measurement data. The following steps are included to measure and verify the main support structure and perform deviation analysis: S410: Scan the main support structure; Taking the initial control point as the coordinate origin, a 3D scanner is used to scan the main support structure. During measurement, the grating projection device projects several specifically coded structured lights onto the object to be measured. Two cameras at a certain angle synchronously capture the corresponding images, and then decode and calculate the phase of the images. The matching technology and triangulation measurement principle are used to solve the 3D coordinates of the pixel points in the common field of view of the two cameras, thereby obtaining comprehensive point cloud data.

[0040] S420: Generate a three-dimensional model; Based on the point cloud data, BIM model layout is carried out to build a three-dimensional model of the main supporting structure.

[0041] S430: Deviation analysis; Compare the 3D model with the design drawings, analyze the deviation between the actual structure and the design, including the key node positions and slopes, and obtain the deviation analysis results. If it is within the error range, proceed to the next step.

[0042] Afterwards, according to the theoretical position and deviation analysis results provided by the design drawings, combined with the coordinate system of the initial control points, the secondary control points are selected and marked to correct the construction errors of the main support structure and provide a benchmark for subsequent construction. Steel needles should be injected into the secondary control points, marked with red paint, and protected. The horizontal control points should be set on permanent structures and the elevations should be clearly marked with red paint.

[0043] S500: calibrate the support point; The second laying-out measurement is carried out based on the secondary control points, and the support points are marked on the upper surfaces of the annular base 1 and the basic skeleton 2. During this period, the support points are positioned throughout the process by using theodolite and total station.

[0044] S600: Install adapter 7; The adapter seat 7 is welded and fixed on the supporting point. Each time the adapter seat 7 is fixed, it is necessary to check its position and the slope formed between it and another corresponding adapter seat 7. If there is a deviation, the length of the adapter seat 7 can be adjusted, such as replacing the adapter seat 7 with a different length model. The essence is to adjust the upper and lower positions of the mounting holes on the adapter seat 7, aiming to adjust the height of the adapter seat 7 and the mounting point of the purlin unit 301 so that the purlin unit 301 has an expected slope, and perform a first-level slope adjustment to adjust the upper and lower positions and inclination angles of the subsequently installed purlin units 301 to correct the deviations generated when splicing and constructing the basic frame 2. Compared with the method of adding pads to the connecting parts, this adjustment method has a larger adjustment range, can effectively adjust the problems of large deviations and irregular slopes of the basic frame 2, and avoid further accumulation of errors that cause the final light-transmitting plate 501 to warp or deform.

[0045] S700: splicing secondary skeleton 3; The purlin unit 301 is installed along the basic frame 2 and between two adjacent adapters 7 to obtain the secondary frame 3. In the actual installation process of the purlin unit 301, only one set of bolt kits is set at one end of each purlin unit 301 to connect with the adapter 7. Before the bolt kit is locked, the purlin unit 301 can be rotated and adjusted around the bolt kit, and adjusted left and right with its long strip holes. In combination with on-site cutting or connecting parts padding, the purlin unit 301 can be finely adjusted in slope on the basis of adapting to the first-level slope adjustment, so as to better eliminate errors. The specific on-site cutting or connecting parts padding methods all adopt existing technologies and will not be repeated here.

[0046] S800: Install the attached frame; A pressure plate is screwed to the upper end surface of the purlin unit 301, and the pressure plate presses and fixes the fixing part 401 to the upper end surface of the purlin unit 301. An elastic gasket is arranged between the fixing part 401 and the purlin unit 301 to provide a buffering effect and to fine-tune the upper and lower positions by adjusting the thickness of the gasket.

[0047] S900: Install skylight 5; The edge of the light-transmitting plate 501 is bonded and fixed to the rotating part 402 of the adjusting auxiliary frame 4 by using structural adhesive. When only one side of the light-transmitting plate 501 is fixed, the light-transmitting plate 501 can be rotated by adjusting the auxiliary frame 4 to perform secondary slope adjustment, further eliminating errors and ensuring the accuracy of the slope of the light-transmitting plate 501. The light-transmitting plates 501 are installed continuously to form a continuous skylight 5, and gaps are reserved between the light-transmitting plates 501 to form deformation shrinkage joints.

[0048] S1000: waterproof sealing treatment; Sealing strips are used to seal and fill the deformation shrinkage joints between the light-transmitting plates 501 to ensure the sealing of the skylight 5.

[0049] Also included between steps S600 and S700 is step S750: setting safety measures; the safety measures include a large safety rope, and a hanging point for the large safety rope is set at the center of the base frame 2 so that workers can hang their safety belts to the large safety rope during construction; multiple large safety ropes are hung radiating from the center to the surrounding areas, so that workers have reliable safety belt hanging points in each construction area to ensure the safety of high-altitude operations.

[0050] Since the skylight 5 is a dome-shaped spherical structure, in order to prevent the basic keel from slipping and the secondary keel from being stepped on and damaged during construction, a high-quality wooden springboard is used to lay the working surface on the basic frame 2 and is fixed with wire, providing a stable working surface for workers and further reducing the possibility of slipping or falling.

[0051] The safety rope and the springboard divide the working surface into a plurality of circularly distributed construction areas. In the step S700, the secondary frame 3 is spliced ​​in different areas, which reduces the need for workers to work across different areas and avoids the potential safety hazards caused by crossing high altitude areas.

[0052] Safety measures also include a protective net 13 located below the working surface, such as Figure 5The protective net 13 is arranged with four or more layers at intervals from top to bottom, and each layer of the protective net 13 includes an interception rope 1301 and a safety flat net. An expansion wire is used to form a ring-shaped rooting point on the main body of the building, and the end of the interception rope 1301 is fixed on the expansion wire rooting point. The interception rope 1301 is staggered to form an interception skeleton, and the staggered point is fixed and locked with a lock buckle to provide a reliable interception skeleton for the safety flat net; the safety flat net is laid on the interception skeleton to form a protective net 13. The safety flat net is a flexible structure, which is mainly responsible for directly intercepting and accommodating falling objects, but it relies on the support of the interception skeleton.

[0053] The density of the interception frame at the top layer is the smallest. Specifically, the top protective net 13 uses Φ8 steel wire rope to form a 1m*1m grid. The top interception frame forms the first interception buffer for falling objects. The kinetic energy of falling objects is the largest, and a high-density frame is required to carry and buffer, providing stronger support for the safety net to cope with high kinetic energy impacts. If the top interception frame is sparse, the safety net will have a large deformation when subjected to force, which may cause damage to the safety net or interception failure.

[0054] like Figure 6 The second layer of protection net 13 uses subdivision rope 1302 to divide the grid of the interception skeleton for the second time. The diameter of subdivision rope 1302 is smaller than that of interception rope 1301. Specifically, interception rope 1301 uses Φ8 steel wire rope to form a 1.5m*1.5m grid; subdivision rope 1302 uses Φ6 steel wire rope as a grid to divide the 1.5m*1.5m grid into 0.2m*0.2m grids. The second layer of interception skeleton is mainly used to further buffer and contain falling objects falling from the first layer of protection net 13. It is no longer necessary to deal with large impacts, but it is necessary to fully buffer and disperse the remaining kinetic energy of the falling objects. Subdivision rope 1302 is thinner and more flexible than interception rope 1301. Its elastic performance is more suitable for handling small falling objects or residual kinetic energy impacts. Using a thinner subdivision rope 1302 for secondary division can further disperse the impact force, and better cooperate with the safety flat net for buffering to further disperse the kinetic energy of the falling objects. The third layer and the following protection nets 13 are no longer provided with subdivision ropes 1302, in order to improve the redundancy of the protection net 13 system.

Claims

1. A high-altitude dome curtain wall structure, characterized in that: It comprises an annular base (1), a basic frame (2), a secondary frame (3), an adjustable auxiliary frame (4) and a skylight (5); The annular base (1) is horizontally fixed on the top floor slab (6); The basic frame (2) is fixed on the annular base (1), and the basic frame (2) is an arched, mesh-like structure; A plurality of adapter seats (7) are fixed at intervals on the annular base (1) and the basic frame (2); The secondary frame (3) comprises a plurality of purlin units (301) arranged along the basic frame (2), and the ends of the purlin units (301) are respectively mounted on a corresponding adapter (7), so that the secondary frames (3) are arranged above the basic frame (2) at corresponding intervals; The adjustable auxiliary frame (4) comprises a fixed portion (401) and a rotating portion (402) which are hingedly connected, and the fixed portion (401) is fixed to the upper end surface of the purlin unit (301); The skylight (5) comprises a plurality of light-transmitting plates (501) that are spliced ​​and connected, and the edges of the light-transmitting plates (501) are fixed on the rotating part (402); A deformation shrinkage gap is maintained between the adjacent light-transmitting plates (501), and the deformation shrinkage gap is filled with a sealant (8).

2. The high-altitude dome curtain wall structure according to claim 1, characterized in that: The annular base (1) comprises a base (101) and an annular seat (102); the base (101) is fixedly connected to the top floor (6); the annular seat (102) is horizontally fixed on the base (101); the cross section of the annular seat (102) is circular; an adapter seat (7) is fixed on the annular seat (102); an extension line of the adapter seat (7) passes through the center of the cross section of the annular seat (102).

3. The high-altitude dome curtain wall structure according to claim 2, characterized in that: The top floor slab (6) comprises a steel structure (601) and a concrete layer (602), wherein the concrete layer (602) is arranged on the steel structure (601); the base (101) is fixed on the steel structure (601); and an annular prefabricated drainage ditch (9) is arranged between the annular seat (102) and the concrete layer (602).

4. The high-altitude dome curtain wall structure according to claim 3 is characterized in that: The concrete layer (602) is provided with an annular protective step (603) around the prefabricated drainage trough (9); a water retaining plate (604) is fixedly covered on the top of the protective step (603); and the water retaining plate (604) is sealed and connected to the top of the prefabricated drainage trough (9) on one side close to the protective step (603).

5. The high-altitude dome curtain wall structure according to claim 4, characterized in that: A drainage plate (10) is fixedly connected between the side of the prefabricated drainage trough (9) close to the skylight (5) and the skylight (5), and the drainage plate (10) is inclined from top to bottom toward the prefabricated drainage trough (9); one end of the drainage plate (10) is fixed to a purlin unit (301) located at the outermost edge of the secondary frame (3) and is sealed with the light-transmitting plate (501), and the other end of the drainage plate (10) is sealed with the top of the prefabricated drainage trough (9).

6. The high-altitude dome curtain wall structure according to claim 4, characterized in that: A bracket (11) is fixedly connected between the annular seat (102) and the concrete layer (602); the bracket (11) is fixedly connected to the steel structure (601), the protective step (603) and the annular base (1); the prefabricated drainage trough (9) is fixed to the upper surface of the bracket (11); a bottom support plate (14) is fixedly connected to the lower surface of the bracket (11); and thermal insulation rock wool (12) is provided between the prefabricated drainage trough (9) and the bottom support plate (14).

7. A construction method of a high-altitude dome curtain wall structure, using the high-altitude dome curtain wall structure according to claim 1, characterized in that: The following steps are involved: S100: Build the main support structure; The basic framework (2) of the dome is assembled and constructed on the annular base (1) to obtain a main support structure; S200: first measurement and setting out; Selecting and marking initial control points in the dome area on the top floor slab (6), performing a first measurement and setting out based on the initial control points, and constructing a coordinate system, wherein the initial control points include horizontal control points and axis control points; S300: Install the main support structure; The main support structure is hoisted to the dome area on the top floor slab (6), and the annular base (1) is fixed correspondingly on the top floor slab (6) based on the initial control point; S400: generating secondary control points; Measure and verify the main supporting structure and conduct deviation analysis; According to the theoretical position and deviation analysis results provided by the design drawings, combined with the coordinate system of the initial control points, select and identify the secondary control points; S5 00: calibrate the support point; Taking the secondary control point as a reference, a second set-out measurement is performed to mark the support point positions on the upper surfaces of the annular base (1) and the foundation frame (2); S600: Install the adapter (7); Fixing the adapter seat (7) at the supporting point, and adjusting the length of the adapter seat (7) to perform a first-level slope adjustment, so as to adjust the upper and lower positions and the inclination angles of the purlin units (301) to be installed subsequently; S700: splicing the secondary skeleton (3); Installing purlin units (301) along the basic frame (2) and between two adjacent adapter seats (7) to obtain a secondary frame (3); S800: Install the attached frame; Fixing the fixing portion (401) of the adjusting auxiliary frame (4) on the upper end surface of the purlin unit (301); S900: Install the skylight (5); The edge of the light-transmitting plate (501) is bonded and fixed to the rotating part (402) of the adjusting auxiliary frame (4), and the light-transmitting plate (501) is rotated by adjusting the auxiliary frame (4) to adjust the secondary slope; the light-transmitting plates (501) are continuously installed to form a continuous skylight (5); S1000: waterproof sealing treatment; A sealant (8) is used to seal and fill the deformation shrinkage joints between the light-transmitting plates (501), thereby ensuring the sealing of the skylight (5).

8. The construction process of a high-altitude dome curtain wall structure according to claim 7 is characterized in that: In step S400, the main support structure is measured and verified and deviation analysis is performed through the following steps: S410: Scan the main support structure; Taking the initial control point as the coordinate origin, use a 3D scanner to scan the main support structure to obtain comprehensive point cloud data; S420: Generate a three-dimensional model; Based on the point cloud data, a three-dimensional model of the main support structure is constructed; S430: Deviation analysis; Compare the 3D model with the design drawings, analyze the deviation between the actual structure and the design, including the location of key nodes and slopes, and obtain the deviation analysis results.

9. The construction process of a high-altitude dome curtain wall structure according to claim 8 is characterized in that: The steps S600 and S700 further include step S650: setting security measures; The safety measures include a safety rope, a safety rope hanging point is set at the center of the basic frame (2), and the safety rope is hung radially from the center to the surrounding areas; Laying a springboard on the working surface on the foundation frame (2); The safety rope and the springboard divide the working surface into a plurality of circularly distributed construction areas; In the step S700, the secondary skeleton (3) is spliced ​​in different regions.

10. The construction process of a high-altitude dome curtain wall structure according to claim 9 is characterized in that: The safety measures also include a protective net (13) located below the working surface, wherein the protective net (13) is provided with multiple layers at intervals from top to bottom, and each layer of the protective net (13) includes an interception rope (1301) and a safety flat net; the ends of the interception ropes (1301) are fixed to the main body of the building, the interception ropes (1301) are staggered to form an interception skeleton, and the staggered points are fixed and locked with lock buckles; the safety flat net is laid on the interception skeleton; The interception skeleton at the top layer has the smallest density; the interception skeleton at the second layer uses a subdivision rope (1302) to divide its grid, and the diameter of the subdivision rope (1302) is smaller than the interception rope (1301).

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