Steel conversion platform connecting structure

Abstract

The utility model relates to a steel conversion platform connecting structure which structurally comprises underground embedded steel columns, a basement top plate, a connecting bracket plate, a roof girder and a roadbed box steel plate, the basement top plate is poured between the tops of the underground embedded steel columns, and the connecting bracket plate is arranged at the tops of the underground embedded steel columns. The two ends of the roof main beam are connected to the corresponding connecting bracket plates in an inserted mode, the roof secondary beam is connected with the roof main beam, and a roadbed box steel plate is laid on the overall top of the roof secondary beam and the roof main beam. The structure has the advantages that the structure design is reasonable, the supporting points are temporarily arranged at the bottoms of the steel columns, and the main and secondary beams of the structural roof are used as steel conversion platform beams, so that resource investment can be effectively saved, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steel conversion platform connecting structure and belongs to the technical field of building engineering. BACKGROUND

[0002] In the steel structure hoisting construction of the building engineering industry, such as the construction of super-long, super-wide and super-large industrial plant steel members, especially the industrial plant project with a basement and a large floor area, the existing technology construction process generally sets multiple tower cranes, or the tower crane is cooperated with a large tonnage crane for construction, which has the disadvantages of more safety hazards of group tower operation, higher cost of heavy cranes and the like. On the other hand, because the construction is layer by layer and the construction period is long, it also leads to the inability to quickly close the roof, especially in the rainy season, often facing the situation of leakage and inability to quickly close.

[0003] Specifically, when the tower crane hoisting operation is adopted, multiple tower cranes need to be set according to the project volume and scale. Although this method can solve the hoisting problem, the tower crane is often set in the basement, needs to pass through the structure floor and the like for cross operation, needs to be preformed during the construction period, and needs to be repaired in the later period.

[0004] There are also some optimizations of steel member hoisting in the prior art, such as increasing a track or a specific platform, but additional costs and time are needed. UTILITY MODEL CONTENT

[0005] The utility model provides a steel conversion platform connecting structure, which aims to overcome the above-mentioned deficiencies of the prior art, reduce resource investment and improve construction efficiency, and reduce construction safety hazards.

[0006] The technical solution of the utility model: a steel conversion platform connecting structure, which comprises an underground embedded steel column, a basement roof, a connecting corbel plate, a roof main beam and a roadbed box steel plate. The basement roof is poured between the top of the underground embedded steel column, the connecting corbel plate is arranged on the top of the underground embedded steel column, the roof main beam is inserted into the corresponding connecting corbel plate at both ends, the roof secondary beam is connected with the roof main beam, and the roadbed box steel plate is arranged on the top of the roof secondary beam and the roof main beam. First, the connecting corbel plate is arranged on the underground embedded steel column, then the roof secondary beam and the roof main beam are installed, and finally the roadbed box steel plate is paved and fixed. The formed system is a temporary hoisting steel platform. Small truck cranes can drive into the basement roof hoisting operation through the conversion platform, which can reduce the risk of tower crane arrangement and large tonnage crane construction.

[0007] Preferably, a pair of roadbed box steel plates are arranged on the top of the roof secondary beam and the roof main beam, and the distance between the adjacent roadbed box steel plates is matched with the distance between the two sides of the crawler crane. The driving construction of the crawler crane can be satisfied.

[0008] Preferably, the roof secondary beam and the roof main beam are not in contact with the basement roof, and the spacing is 300mm.

[0009] The utility model discloses the advantages are: reasonable structure design, through the temporary support point of steel column bottom is additionally set, and utilize structure roof main secondary beam and do steel conversion platform beam, can effectively save resource input, improve construction efficiency,

[0010] 1) through this structure, the industrial plant etc. can realize the capping by fast partitioning and blocking, and the subsequent process can be quickly inserted into the construction, so that the overall construction efficiency can be effectively improved;

[0011] 2) the roof structure main secondary beam is applied to the steel conversion platform, realizes " permanent and temporary combination ", and cost can be effectively saved;

[0012] 3) compared with the problems of many hidden troubles of traditional group tower operation and high cost of heavy crane, the cross operation safety hidden danger can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the steel conversion platform connecting structure of the utility model.

[0014] Figure 2 It is Figure 1 The side view when the small crane travels.

[0015] Figure 3 It is Figure 1 The working state schematic view when the small crane carries out steel member cross-retrofitting.

[0016] Figure 4 It is the steel conversion platform arrangement and retrofitting schematic view using the steel conversion platform connecting structure of the utility model.

[0017] 1 in the drawing is the underground embedded steel column, 2 is the basement roof, 3 is the connecting corbel plate, 4 is the roof main beam, 5 is the roadbed box steel plate, 6 is the crawler crane. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail in connection with embodiment and specific implementation.

[0019] For example, Figure 1 , 2As shown, a steel conversion platform connecting structure, which comprises underground embedded steel columns 1, basement roof 2, connecting corbel plate 3, roof main beam 4 and roadbed box steel plate 5, wherein the basement roof 2 is poured between the top of the underground embedded steel columns 1, the connecting corbel plate 3 is installed on the top of the underground embedded steel columns 1, the roof main beam 4 is inserted on the corresponding connecting corbel plate 3 at both ends, the roof secondary beam is connected with the roof main beam 4, and a pair of roadbed box steel plates 5 is laid on the top of the roof main beam 4 and the roof secondary beam, and the spacing between the adjacent roadbed box steel plates 5 is matched with the spacing between the two sides of the crawler crane 6.

[0020] The principle of the above structure is that first, the steel platform connecting plate (connecting corbel plate 3) is arranged at the bottom of the first floor steel column (underground embedded steel column 1), then the roof main and secondary beams (roof secondary beam and roof main beam 4) are installed, and finally the shaped steel plate (roadbed box steel plate 5) is paved and fixed, and the formed system is the temporary hoisting steel platform.

[0021] The small car hoist can drive into the basement roof hoisting operation through the conversion platform (the conversion platform does not contact with the basement roof, and the height difference is about 300mm), which greatly reduces the risk of tower crane arrangement and large tonnage crane construction.

[0022] The specific implementation steps are as follows:

[0023] Node deepening design:

[0024] The weight of steel members and crawler crane should be fully considered, and the stress calculation of the steel column bottom steel conversion platform connecting form, specification parameters and the like should be focused on to ensure that the node checking and overall stability meet the design requirements.

[0025] On-site measurement and control of pre-embedding precision:

[0026] Through the reference points arranged outside the foundation pit, the pre-embedding and installation precision of the steel structure is controlled by using the total station, and the pre-embedding of the anchor bolt at the bottom of the steel column and the pre-embedding of the structural steel column of the negative one layer are mainly controlled. Specifically,

[0027] 1) The pre-embedding precision of the anchor bolt at the bottom of the steel column is mainly controlled by the positioning plate. First, the total station is used to control the specific plane position of the pre-embedded anchor bolt positioning plate according to the measurement control points outside the foundation pit, then the positioning plate and the anchor bolt are preliminarily installed, then the perpendicularity and elevation of the anchor bolt are adjusted, and finally the positioning plate and the anchor bolt are fixed.

[0028] 2) The pre-embedding of the structural steel column of the negative one layer mainly controls the perpendicularity. The pre-embedded position of the anchor bolt should be reviewed before the pre-embedded column is hoisted, and timely adjustment should be made if there is deviation. After the pre-embedded steel column is in place, the axis, perpendicularity, elevation, weld gap and other factors are fully considered during correction to ensure the pre-embedding precision of the steel column.

[0029] Temporary connection of roof main and secondary beams at the bottom of the steel column:

[0030] After the basement roof is poured, the first floor steel column bottom is inserted into the main and secondary beam construction of the roof. During the construction process, attention should be paid to the protection and maintenance of steel components.

[0031] Laying of shaped steel plate:

[0032] After the main and secondary beam frame at the bottom of the steel column is installed, lay the customized steel plate according to the track for the crawler crane to travel.

[0033] Back-up support for roof material storage area:

[0034] Transport the steel components to the designated location at the construction site and place them horizontally. The height of the sleeper placed under the components should not be less than 300mm to avoid damaging the corbels. After the steel components arrive, they should be stacked according to the number and installation order, ensuring that the component identification number is in a prominent position.

[0035] Small crane debugging, trial operation hoisting:

[0036] After the crane enters the steel conversion platform, do not immediately perform steel component hoisting operations. Instead, perform walking debugging on a specific track and observe the steel column connection nodes and steel component stress deformation. After all parties have accepted it, perform steel component trial hoisting to avoid damaging the basement floor.

[0037] Reasonably prepare materials according to the hoisting sequence:

[0038] Consider the cooperation of various specialties as soon as possible. Adopt the construction technology of gradually retreating from one side to the top for hoisting operations. Steel component processing and ordering should be strictly matched with the construction site. Hoist and place the materials as soon as possible after they arrive to avoid long-term storage and pollution.

[0039] Hoist and install steel structures in sections:

[0040] Before hoisting, strictly follow the safety special construction plan to organize construction. According to safety standards, arrange lifelines, safety nets, and "edge" safety protection measures, etc. on site. Pay special attention to hoisting steel columns, steel beams, and tie rods simultaneously, not single columns. Hoist components every day to form stable structural units. Before hoisting, calculate the structural stability of each hoisting unit to ensure the safety and reliability of the structural unit.

[0041] Treatment of steel column bottom connecting plate:

[0042] With the completion of the retreatment of each span steel component, the temporary connecting plate at the bottom of the steel column can be removed. Ensure cutting quality and safety during the cutting process. Especially, preheat the steel plate before cutting to avoid cracks and deformation during cutting. At the same time, control the cutting speed and edge treatment to avoid the impact of edge burrs and unevenness on subsequent process construction.

[0043] Cleaning and acceptance:

[0044] Steel member hoisting is completed and temporary connecting plate processing is completed, and timely acceptance, focus on the first layer of steel column root deformation and crack and so on are checked.

[0045] The above described components are all prior art, and a person skilled in the art can use any model and existing design that can achieve its corresponding function.

[0046] The above described is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the inventive concept of the present application, can make a number of deformation and improvement, these all belong to the protection scope of the present application.

Claims

1. A steel transfer platform connection structure, characterized in that: The invention comprises an underground pre-buried steel column (1), a basement top plate (2), a connecting corbel plate (3), a roof main beam (4) and a roadbed box steel plate (5), wherein the basement top plate (2) is cast between the tops of the underground pre-buried steel columns (1), the tops of the underground pre-buried steel columns (1) are provided with connecting corbel plates (3), both ends of the roof main beam (4) are plugged into the corresponding connecting corbel plates (3), the roof secondary beam and the roof main beam (4) are connected to each other, and the roof secondary beam and the roof main beam (4) are paved with a roadbed box steel plate (5) on the tops of the roof secondary beam and the roof main beam (4); a pair of roadbed box steel plates (5) are paved on the tops of the roof secondary beam and the roof main beam (4), and the spacing between adjacent roadbed box steel plates (5) matches the spacing between crawler tracks on both sides of the crawler crane (6).

2. A steel transfer platform connection structure as claimed in claim 1, wherein the roof secondary beam and the roof main beam (4) do not contact the basement top plate (2), and the spacing is 300 mm.

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