CN219509006U - High-altitude large-span daylighting skylight space truss steel platform construction system - Google Patents

Abstract

The utility model discloses a construction system for a space truss steel platform of a high-altitude large-span daylighting skylight, which comprises a space main truss, planar secondary trusses, profile steel secondary keels, a platform panel and a back-roof reinforcing structure, wherein two ends of the space main truss are erected on a frame beam through truss upright posts, the adjacently arranged space main trusses are connected into a whole through the vertically fixed planar secondary trusses, the profile steel secondary keels are fixedly paved on the tops of the space main trusses, the platform panel is fully paved and fixed on the tops of the profile steel secondary keels, the back-roof reinforcing structure comprises back-roof support columns arranged between floors below the steel platform, the back-roof support columns are vertically arranged, and the top and bottom ends of the back-roof support columns are respectively fixed on frame beams of an upper floor and a lower floor. The utility model has the advantages of short total construction period, large span, wide application range, light dead weight, saving cost relative to a section steel platform, realizing three-dimensional construction, being green, safe and environment-friendly and greatly improving the construction environment of operators.

Description

High-altitude large-span daylighting skylight space truss steel platform construction system

Technical Field

The utility model relates to the technical field of building construction, in particular to a construction system for a space truss steel platform of a high-altitude large-span daylighting skylight.

Background

Construction of high-altitude large-span daylighting roofs usually adopts full-hall scaffolds or profile steel platforms at present. Setting up a construction platform by adopting a full scaffold, so that the construction of the finish-assembled lower part of the daylighting roof can be restricted, and the total construction period is increased; the steel platform is limited by the dead weight and bearing capacity of the steel, the application span of the steel platform can only reach 15m at maximum, the steel consumption is large, and the cost of the platform is high. Therefore, how to efficiently and safely complete the construction of the high-altitude large-span daylighting roof on the basis of controlling the construction cost becomes a technical problem to be solved.

Disclosure of Invention

The utility model aims to provide a construction system for a space truss steel platform of a high-altitude large-span daylighting skylight, which aims to solve the technical problems in the background technology.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a high altitude large-span daylighting skylight space truss steel platform construction system, includes space main truss, plane secondary truss, shaped steel secondary joist, platform panel and returns top reinforced structure, space main truss both ends are erected on the frame roof beam through the truss upright post, link as an organic wholely through the plane secondary truss of vertical fixation between the adjacent space main truss that sets up, and space main truss top is fixed to be laid the shaped steel secondary joist, and the shaped steel secondary joist top is full to be laid and is fixed with the platform panel, return top reinforced structure is including setting up the top support column that returns between each floor of steel platform below, the vertical setting of top support column returns, and its top end is fixed respectively on the frame roof beam of upper and lower two-layer floor.

Preferably, in order to facilitate the in-place welding of the plane secondary truss, the two ends of the plane secondary truss are welded and fixed with lap joint angle steel.

Preferably, the column bottom of the truss column is anchored on the top surface of the frame beam by adopting an adjusting bolt, an adjusting space is reserved between the column bottom and the top surface of the frame beam, and the adjusting space is filled with leveling concrete tightly.

Preferably, the space main truss is a factory-processed segmented prefabricated member, the single-section length of the space main truss is not more than 15m, and the segmented position of the space main truss is set away from the midspan position.

Preferably, for enhancing lateral stability, the bottom of each frame beam is reinforced by two top-returning support columns, and a cross support is arranged between the two top-returning support columns.

Compared with the prior art, the utility model has the beneficial effects that:

1. the total construction period is short: the working procedures of lighting roof bottom finish-mounting construction, staircase mounting, glass railing panel and veneer mounting, fireproof roller shutter mounting, first-layer finish-mounting ground pavement and the like are inserted in advance while lighting roof construction is carried out, so that the total construction period is greatly shortened;

2. large span and wide application range: compared with the traditional section steel platform, the construction span of the utility model can reach 30m, and the construction requirements of various engineering daylighting roofs and curtain walls in the current stage can be satisfied;

3. the dead weight is light, and the cost of the relative shaped steel platform is saved: compared with the traditional steel platform, the steel consumption of the steel platform is 3/5 of that of the steel platform under the same span, so that the steel consumption of the platform is greatly saved, and the cost investment is reduced;

4. and (3) three-dimensional construction: according to the utility model, the atrium area is divided into an upper construction area and a lower construction area, and the profiled steel sheet is paved on the platform, so that hard protection is formed, and compared with a full-hall scaffold, three-dimensional construction can be realized;

5. green, safe and environment-friendly: compared with the conventional full-hall scaffold construction platform, the full-hall scaffold construction platform can reduce a large amount of investment of manpower and material resources, and greatly improves the construction environment of operators.

Drawings

The foregoing and/or other aspects and advantages of the present utility model will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the utility model, wherein:

FIG. 1 is a schematic view of an assembled structure of a space main truss and a planar secondary truss of the present utility model;

FIG. 2 is a schematic plan layout of a space truss steel platform according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a space truss steel platform of the utility model;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the truss column foot of the present utility model;

FIG. 6 is a schematic cross-sectional view of a back-roof reinforcement structure according to the present utility model;

fig. 7 is a schematic view of the structure of the single back-top support post of the present utility model when installed.

Reference numerals: 1. a space main truss; 2. truss upright posts; 3. plane secondary truss; 4. overlapping angle steel; 5. section steel secondary joists; 6. a platform panel; 7. a frame beam; 8. a frame column; 9. an adjusting bolt; 10. leveling the concrete; 11. a back-top support column; 12. cross supports; 13. and (5) anchoring the bolt.

Detailed Description

Hereinafter, an embodiment of a construction system for a space truss steel platform for a high-altitude large-span daylighting skylight of the present utility model will be described with reference to the accompanying drawings. The examples described herein are specific embodiments of the present utility model, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the utility model to the embodiments and scope of the utility model. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification, including those adopting any obvious substitutions and modifications to the embodiments described herein.

In the description of the present utility model, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "upper", "lower", "inner", "outer", "transverse", "longitudinal", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

The drawings in the present specification are schematic views, which assist in explaining the concept of the present utility model, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present utility model, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.

The principles and features of the present utility model are described below with reference to the drawings, the illustrated embodiments are provided for illustration only and are not intended to limit the scope of the present utility model. The preferred embodiment of the present utility model is described in further detail below in conjunction with fig. 1-7:

as shown in fig. 1-7, the construction system of the space truss steel platform of the high-altitude large-span daylighting skylight comprises a space truss steel platform and a back-roof reinforcing structure, wherein the space truss steel platform comprises a space main truss 1, a plane secondary truss 3, a profile steel secondary truss 5 and a platform panel 6, two ends of the space main truss 1 are erected on a frame beam 7 through truss upright posts 2, the adjacently arranged space main trusses 1 are connected into a whole through the vertically fixed plane secondary trusses 3 so as to enhance the lateral stability of the space truss steel platform, the profile steel secondary truss 5 made of I-steel material is fixedly paved at the top of the space main truss 1, and a profiled steel plate is fully paved and fixed at the top of the profile steel secondary truss 5 to serve as the platform panel 6;

as shown in fig. 6-7, the top-returning reinforcing structure comprises top-returning support columns 11 arranged between floors below the steel platform, wherein the top-returning support columns 11 are vertically arranged, and the top ends and the bottom ends of the top-returning support columns are respectively fixed on frame beams 7 of the upper floor and the lower floor through anchor bolts 13.

The construction process of the utility model is as follows:

the deepening design of the space truss steel platform mainly comprises the steps of designing a space main truss 1, analyzing the stress of the space main truss 1, analyzing a three-dimensional model, deepening upright post nodes, deepening back supporting, and the like.

The measurement pay-off is a key step of installing a steel platform in place, truss upright posts 2 at two ends of a main truss 1 in each space are subjected to actual pay-off rechecking, and 500mm control lines are sprung to the bottoms of the truss upright posts 2, so that subsequent verification is facilitated.

Truss column 2 location installation, truss column 2 adopts double H500 x 250 x 16 x 25 shaped steel post processing preparation, highly need take into account comprehensively that structural slab both sides elevation difference, H shaped steel post bottom elevation should be higher than structural plane 500mm, the width is suitably 600mm, middle web member adopts the angle steel to carry out the diagonal bracing, as shown in fig. 5, truss column 2 bottom adopts four M20 chemistry crab-bolts to be fixed at frame roof beam 7 top surface as adjusting bolt 9, the column foot bottom is reserved 50mm and is adjusted truss column 2 straightness that hangs down through adjusting bolt 9, C40 non-shrink fine stone concrete or iron fillings mortar are fully filled as leveling concrete 10 in the bottom after the alignment in order to form stable support to truss column 2 column foot.

The processing and transportation of the space main truss 1 are carried out, the components are processed in sections in a processing factory according to the transportation capability and the specification requirement, the single section length is not more than 15m, the section position should avoid the midspan position, the interface position can be arranged at one third of the midspan position, the size deviation of the on-site interface position is strictly checked and controlled before delivery, so that the on-site assembly is smoothly carried out, the processing diagram of each truss space main truss 1 is drawn according to the design drawing, the information of the rod material, the truss height and width, the section form, the truss total length and the like of the space main truss 1 is respectively marked, and the on-site bottom intersecting, processing and inspection are carried out by combining with the 3D three-dimensional schematic diagram.

The space main truss 1 is assembled on site, before the assembly, the assembly personnel must be familiar with the requirements of construction drawings, assembly technology and related technical files, and check the appearance, materials, specifications and quantity of assembled parts, when the assembled parts are qualified and can be constructed without errors, the connecting surface of the assembled welding part and rust, burrs, dirt and the like within the range of 30-50 mm along the edge must be cleaned before the assembly, when the plates and the profiles need to be welded, the assembly of the parts or the whole components should be carried out before the assembly of the parts, the assembly of the whole components should be carried out after the assembly, the welding and the correction, and the hidden parts of the components should be coated and welded in advance after the assembly is qualified.

The space main truss 1 is prepared by lifting according to a pre-determined lifting preparation flow chart, lifting mechanical type selection is performed, the factors such as the radius of operation of an automobile crane, the height of a skirt room, the lifting weight of a single member, the field lifting environment and the like are comprehensively considered, the type of lifting equipment, the type of an auxiliary arm and the working condition are determined, then the steel wire rope for lifting is selected (the steel wire rope is selected according to the weight of the member, the length of the member and the distance between lifting points) and crane foundation verification and treatment are sequentially performed (when the lifting position is positioned on a structural floor slab, the bearing capacity is subjected to re-checking, and a reinforcing scheme is determined according to the re-checking result), the frame beams are reinforced and the top-back support columns 11 are provided with round pipe columns with the diameter of 800mm, the wall thickness of 25mm, the round pipe columns are tightly supported by adopting hydraulic jacks and balance plates in the construction, the bottom of the round pipe columns are reserved with the width of 20mm, after the round pipe columns are straightened, the bottom of each round pipe column is welded with the rear-mounted member plates, and the two top-back support columns 11 at the bottom of each frame beam 7 are reinforced by adopting L160X 12 cross support cross 12mm as cross support angle steel for reinforcing lateral stability.

The method comprises the steps of carrying out hoisting on a space main truss 1, assembling the space main truss 1 outside a field, carrying out trial hoisting after the completion of the hoisting, carrying out formal hoisting after the trial hoisting is 500mm in height, setting a signaler on the first floor and floors at two ends of a steel platform respectively in the hoisting process, guiding the hoisting of the space main truss 1, and arranging professional welding personnel at two ends for welding construction at the same time after the hoisting is in place.

The plane secondary truss 3 is installed, the plane secondary truss 3 is installed in a segmented mode, 150mm long L150 x 8mm angle steel is welded at two ends of each section of the plane secondary truss 3 to serve as a lap joint connecting piece (namely, lap joint angle steel 4), the lap joint angle steel 4 can serve as a temporary lap joint point to be erected on the space main truss 1 in the hoisting process, and meanwhile, the plane secondary truss can also serve as an elevation control point of the plane secondary truss.

The section steel secondary joist 5 and the platform panel 6 are installed, the section steel secondary joist 5 is made of finished I-steel, the model is 180 x 94 x 6.5 x 10.7mm, the distance is 2000mm, the platform panel 6 is a fully paved YX75-230-690-1.2 profiled steel sheet, the tower crane and the manual mode are adopted to be matched and paved on site, one end of the section steel secondary joist 5 is gradually paved towards the other end of the section steel secondary joist, when the paving width of the section steel secondary joist 5 is greater than or equal to the length of one panel, the section steel secondary joist is paved by inserting the panel, and the panel and the secondary joist are paved simultaneously.

The method comprises the steps of dismantling a space truss steel platform, namely, a profiled steel plate, a section steel secondary keel 5, a plane secondary truss 3 and a space main truss 1, wherein all the space truss steel platform is cut into small blocks except the space main truss 1, the small blocks are transported to the court ground by a 3t lever block, and then transported to the outside of the court, the space main truss 1 is dismantled due to the fact that the space main truss is limited by a curtain wall daylighting roof, a large hoisting machine cannot be adopted, the scheme of horizontal consignment and sectional dismantling is adopted for dismantling on the scene, the adjacent two trusses are temporarily fixed by square steel pipes from a section with smaller span, the whole is formed, the height-width ratio of the platform is reduced, the stability is improved, the truss is padded with a ground tank down, the two trusses are consigned to one side roof by adopting an 8t electric block, the trusses are disassembled on the roof, and then the tower crane is adopted for hoisting outside the court.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (5)

1. A high altitude large-span daylighting skylight space truss steel platform construction system which is characterized in that: including space main truss (1), plane secondary truss (3), shaped steel secondary joist (5), platform panel (6) and back top reinforced structure, space main truss (1) both ends are erect on frame roof beam (7) through truss stand (2), link as an organic wholely through perpendicular fixed plane secondary truss (3) between space main truss (1) that set up adjacently, space main truss (1) top is fixed to be laid shaped steel secondary joist (5), and shaped steel secondary joist (5) top is fully laid and is fixed with platform panel (6), back top reinforced structure is including setting up back top support column (11) between each floor of steel platform below, back top support column (11) vertical setting, and its top end both ends are fixed respectively on frame roof beam (7) of upper and lower two-layer floor.

2. The construction system of the high-altitude large-span daylighting skylight space truss steel platform is characterized in that: and lap joint angle steel (4) is fixedly welded at two ends of the plane secondary truss (3).

3. The construction system of the high-altitude large-span daylighting skylight space truss steel platform is characterized in that: the column bottom of the truss upright column (2) is anchored on the top surface of the frame beam (7) by adopting an adjusting bolt (9), an adjusting space is reserved between the column bottom and the top surface of the frame beam (7), and the adjusting space is filled tightly by leveling concrete (10).

4. The construction system of the high-altitude large-span daylighting skylight space truss steel platform is characterized in that: the space main truss (1) is a segmented prefabricated member processed by a factory, the single-section length of the space main truss (1) is not more than 15m, and the segmented position of the space main truss (1) is set at a position avoiding the midspan.

5. The construction system of the high-altitude large-span daylighting skylight space truss steel platform is characterized in that: the bottom of each frame beam (7) is reinforced by two roof returning support columns (11), and a cross support (12) is arranged between the two roof returning support columns (11).