Super-thick concrete top plate supporting system for workshop vestibule of roller mill

Abstract

The utility model discloses an ultra-thick concrete top plate supporting system for a vestibule of a workshop of a roller mill. The device comprises an entrance top plate supporting frame and a vestibule top plate supporting frame, the entrance top plate supporting frame is a scaffold, the vestibule top plate supporting frame comprises two rows of steel stand columns arranged on the two sides in the longitudinal direction of a vestibule, and each row of steel stand columns comprises a plurality of vertical steel stand columns arranged at intervals; the bottom end of each steel stand column is fixedly connected with an embedded part embedded in a concrete raft, a longitudinal main beam is arranged at the top end of each row of steel stand columns, a sand box with a sand discharging opening is arranged between each longitudinal main beam and the corresponding steel stand column on the lower portion of the longitudinal main beam, and a plurality of transverse secondary beams are arranged on the upper portions of the two longitudinal main beams at intervals. Phi 48 steel pipes and square timbers are sequentially and fully laid on the upper portions of the transverse secondary beams from bottom to top, and a diagonal bridging is fixedly connected between every two adjacent steel stand columns; the steel stand columns are steel pipes with the diameter of 350 mm, the longitudinal main beams are I30b double-spliced H-shaped steel, the transverse secondary beams are I30b H-shaped steel, and the diagonal bridging is channel steel.

Description

Technical Field

[0001] The utility model discloses an ultra-thick concrete top plate support system for a roller mill workshop, belonging to the technical field of building construction support systems. Background Art

[0002] The high-pressure roller mill is a large-scale equipment, and its foundation structure is the key load-bearing part. Its foundation design generally adopts ultra-thick concrete walls, plates and heavy steel structure frames. The top plate of the corridor of the high-pressure roller mill workshop is located above the two walls. It is the foundation of the high-pressure roller mill and is used to carry the high-pressure roller mill. The space of the corridor is relatively small, and the corridor top plate adopts an ultra-thick concrete top plate design. The thickness of the concrete top plate is 1.8m, and the total construction load is 63.88KN / ㎡, which is far beyond the national standard (15kN / ㎡ and above), and it is a relatively dangerous project. The ultra-thick concrete top plate design brings challenges to the construction, especially to the support system used in the construction of ultra-thick concrete top plates, including great construction difficulty, long cycle and high cost. If a full-floor scaffolding is used as the construction support system, it is limited by the corridor space, and the horizontal and vertical distances of the scaffolding poles cannot meet the construction requirements, making the construction difficult. Utility Model Content

[0003] In view of the above-mentioned defects existing in the prior art, the utility model provides an ultra-thick concrete top plate support system for a roller mill workshop which has a simple structure, low construction cost and safe construction.

[0004] The utility model is realized by the following technical scheme: a roller mill workshop corridor super thick concrete top plate support system, characterized in that: it comprises an entrance top plate support frame and a corridor top plate support frame, the entrance top plate support frame is a scaffolding, the corridor top plate support frame is a steel support frame, the corridor top plate support frame comprises two rows of steel columns arranged along the longitudinal sides of the corridor, each row of steel columns comprises a plurality of vertical steel columns arranged at intervals, the bottom end of each steel column is fixedly connected to the embedded parts embedded in the concrete raft slab, each A longitudinal main beam is arranged at the top of each row of steel columns. A sand box with a sand unloading port is arranged between the longitudinal main beam and each steel column below it. A number of transverse secondary beams are arranged at intervals on the upper part of the two longitudinal main beams. The upper part of the transverse secondary beams is fully covered with φ48 steel pipes and square timbers from bottom to top. Scissor braces are fixedly connected between adjacent steel columns; the steel columns are steel pipes with a diameter of 350mm, the longitudinal main beams are I30b double H-shaped steels, the transverse secondary beams are I30bH-shaped steels, and the scissor braces are channel steels.

[0005] In the utility model, the corridor roof support frame adopts a steel support bracket, wherein the steel column adopts a steel pipe with a diameter of 350mm as a vertical support, the longitudinal main beam is the main force transmission structure, and the sand box arranged between the top of the steel column and the longitudinal main beam is used to adjust and control the overall elevation of the support device. φ48 steel pipes and square timbers are laid on the upper part of the transverse secondary beam, and the formwork can be laid directly on the upper part of the square timber. By laying φ48 steel pipes on the lower part of the square timber, the bearing capacity of the bottom structure of the formwork can be improved, and the larger concrete load can be prevented from flattening the square timber as a whole and causing damage to the formwork. The scissor braces arranged between the steel pipe columns can improve the structural strength of the support device and improve the overall stability of the support system.

[0006] Furthermore, in order to improve the overall stability of the support system, the scissors brace includes an oblique scissors brace and a horizontal scissors brace, and the angle between the oblique scissors brace and the ground is 45-60°.

[0007] Furthermore, the upper connection point between the scissors brace and the steel column is no more than 200 mm away from the top of the steel column.

[0008] Furthermore, the longitudinal spacing of the steel columns is 3m, the transverse spacing is 2.5m; the spacing of the transverse secondary beams is 0.5m.

[0009] The beneficial effects of the utility model are as follows: the utility model has a simple structure, is easy to construct, the overall support system is stable and reliable, and the construction using it is safe and reliable; the corridor roof support frame adopts a steel support bracket as the support structure, which has high structural strength and large bearing capacity, can bear a large concrete load, and is not prone to accidents such as collapse and deformation of the formwork support frame, and has a small construction safety risk. The structural design of the corridor roof support frame in the utility model can also be constructed under limited space conditions, and the construction difficulty is small, which can effectively solve the problem of the difficulty of supporting system construction in a limited space; the steel columns, longitudinal main beams, transverse secondary beams and scissors braces in the utility model can all be processed and manufactured using on-site construction materials, with low construction costs, and the input materials can be reused, which can reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 yes Figure 1 A side view schematic diagram of

[0012] Figure 3 yes Figure 1 An enlarged schematic diagram of the right part of ;

[0013] In the figure, 1, entrance roof support frame; 2, corridor roof support frame; 3, concrete roof; 4, concrete raft slab; 5, corridor entrance;

[0014] 2-1, steel columns, 2-2, sand boxes, 2-3, longitudinal main beams, 2-4, transverse secondary beams, 2-5, φ48 steel pipes and square timbers, 2-6, scissor braces. DETAILED DESCRIPTION

[0015] The present invention is further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:

[0016] As shown in the attached drawings, a roller mill workshop corridor super-thick concrete top plate support system includes an entrance top plate support frame 1 and a corridor top plate support frame 2. Among them, the entrance top plate support frame 1 serves as the support structure of the corridor entrance top plate. The concrete thickness of the corridor entrance top plate is small. The entrance top plate support frame 1 adopts a scaffolding, and the setting of the scaffolding is the prior art. The corridor top plate support frame 2 serves as the support structure of the corridor top plate. The corridor top plate support frame 2 adopts a steel support bracket. The corridor top plate support frame 2 includes two rows of steel columns arranged along the longitudinal sides of the corridor. Each row of steel columns includes a plurality of vertical steel columns 2-1 arranged at intervals. The bottom end of each steel column 2-1 is fixedly connected to the embedded parts embedded in the concrete raft 4. The embedded parts are welded by steel plates and angle steels or steel bars. The longitudinal spacing of the steel columns is 3m, and the transverse spacing is 2.5m. A longitudinal main beam 2-3 is arranged at the top of each row of steel columns. Both ends of the longitudinal main beam cantilever 1.2m. A sand box 2-2 is arranged between the longitudinal main beam 2-3 and each steel column 2-1 below it. The sand box 2-2 has a sand discharge port. A number of transverse secondary beams 2-4 are arranged at intervals on the upper part of the two longitudinal main beams 2-3. The upper part of the transverse secondary beams 2-4 is covered with φ48 steel pipes and square wood from bottom to top. The square wood is 7cm*5cm square wood. Scissor braces 2-6 are fixedly connected between adjacent steel columns 2-1. The scissor braces 2-6 include oblique scissor braces and horizontal scissor braces. The angle between the oblique scissor braces and the ground is 45-60°. The scissor braces 2-6 are made of 150X120 channel steel. The scissor braces should be fixed at both ends of the steel columns intersecting with them, and the upper connection point of the scissor brace connecting the steel column is no more than 200mm away from the top of the steel column.

[0017] In the utility model, the steel column 2-1 and the embedded parts connected thereto serve as the vertical support structure and bear the load at the same time. The steel column 2-1 adopts a steel pipe with a diameter of 350 mm. The slurry conveying pipeline on site can be used as a steel column, which can reduce the construction cost. The longitudinal main beam 2-3 is the main force transmission structure. The longitudinal main beam 2-3 adopts I30b double H-shaped steel with a spacing of 2.5m. The transverse secondary beam adopts I30bH-shaped steel with a spacing of 0.5m. The sand box 2-2 is used to adjust and control the overall elevation of the support system. The sand box 2-2 is a prior art. When the support system is dismantled, the fine sand in the box can be discharged through the sand discharge port of the sand box, which is convenient for the removal of the support frame. The φ48 steel pipe and square wood laid on the upper part of the transverse secondary beam 2-4 are used to support the template. The template can be directly laid on the upper part of the square wood. By laying the steel pipe under the square wood, the bearing capacity of the bottom structure of the template can be improved, and the larger concrete load can be prevented from flattening the square wood as a whole, causing the template to be damaged.

[0018] The utility model has the advantages of simple structure, convenient construction, low construction difficulty, stable and reliable support system as a whole, large bearing capacity, and can effectively prevent accidents such as collapse and deformation of the formwork support frame. The construction safety is high, the construction cost of the utility model is low, and it is particularly suitable for construction occasions with limited space.

[0019] The other parts of this embodiment are all prior art and will not be described in detail here.

Claims

1. An ultra-thick concrete top slab support system for a roller mill workshop corridor, characterized by: The invention comprises an entrance top plate support frame (1) and a corridor top plate support frame (2), wherein the entrance top plate support frame (1) is a scaffolding, and the corridor top plate support frame (2) is a steel support frame, and the corridor top plate support frame (2) comprises two rows of steel columns arranged along the longitudinal sides of the corridor, each row of steel columns comprises a plurality of vertical steel columns arranged at intervals, the bottom end of each steel column is fixedly connected to an embedded part embedded in a concrete raft slab, and the top end of each row of steel columns is provided with a longitudinal main beam. A sand box with a sand discharge port is arranged between the longitudinal main beam and each steel column below it. A number of transverse secondary beams are arranged at intervals on the upper part of the two longitudinal main beams. The upper part of the transverse secondary beams is covered with φ48 steel pipes and square timbers from bottom to top. Scissor braces are fixedly connected between adjacent steel columns; the steel columns are steel pipes with a diameter of 350mm, the longitudinal main beams are I30b double H-shaped steel, the transverse secondary beams are I30bH-shaped steel, and the scissor braces are channel steels.

2. The super-thick concrete top slab support system for the roller mill workshop corridor according to claim 1 is characterized by: The scissors struts include oblique scissors struts and horizontal scissors struts, and the angle between the oblique scissors struts and the ground is 45-60 degrees.

3. The super-thick concrete top slab support system for the roller mill workshop corridor according to claim 2 is characterized by: The upper connection point between the scissors brace and the steel column shall not be greater than 200mm from the top of the steel column.

4. The super-thick concrete top slab support system for the roller mill workshop corridor according to claim 1, 2 or 3, characterized in that: The longitudinal spacing of steel columns is 3m, and the transverse spacing is 2.5m; the spacing of transverse secondary beams is 0.5m.

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