阅读说明：本技术 适用于震后可恢复功能钢结构的隔震楼板系统 (Shock insulation floor system suitable for steel structure with function capable of being restored after earthquake ) 是由 张艳霞 武丙龙 张爱林 上官广浩 于 2021-06-11 设计创作，主要内容包括：本发明提供了一种适用于震后可恢复功能钢结构的隔震楼板系统,包括：钢筋桁架楼承板、多个跨中隔震支座、多个梁端隔震支座和多个承托次梁；跨中隔震支座和梁端隔震支座的下端固定于下方的可恢复功能钢框架梁或滑动次梁上,所述跨中隔震支座的上端和梁端隔震支座的上端固定于承托次梁的底部,多个跨中隔震支座位于承托次梁的中间部位,多个梁端隔震支座位于承托次梁的端部,多个承托次梁通过栓钉平行地固定于钢筋桁架楼承板的下方。本系统既能保证承担竖向荷载和传递水平力,也不会妨碍可恢复功能钢框架的开口机制。(The invention provides a shock insulation floor system suitable for a steel structure with a function of recovering after shock, which comprises the following components: the steel bar truss floor support plate comprises a steel bar truss floor support plate, a plurality of midspan shock insulation supports, a plurality of beam end shock insulation supports and a plurality of supporting secondary beams; the lower ends of the midspan shock insulation support and the beam end shock insulation support are fixed on a recoverable functional steel frame beam or a sliding secondary beam below the midspan shock insulation support and the beam end shock insulation support, the upper end of the midspan shock insulation support and the upper end of the beam end shock insulation support are fixed at the bottom of the bearing secondary beam, the multiple midspan shock insulation supports are located in the middle of the bearing secondary beam, the multiple beam end shock insulation supports are located at the end of the bearing secondary beam, and the multiple bearing secondary beams are fixed below the steel bar truss building bearing plate in parallel through studs. The system can guarantee to bear vertical load and transfer horizontal force, and does not interfere with the opening mechanism of the steel frame with recoverable function.)

1. The utility model provides a shock insulation floor system suitable for can resume function steel construction after earthquake which characterized in that includes: the steel bar truss floor support plate comprises a steel bar truss floor support plate, a plurality of midspan shock insulation supports, a plurality of beam end shock insulation supports and a plurality of supporting secondary beams;

the lower ends of the midspan shock insulation support and the beam end shock insulation support are fixed on a recoverable functional steel frame beam or a sliding secondary beam below the midspan shock insulation support and the beam end shock insulation support, the upper end of the midspan shock insulation support and the upper end of the beam end shock insulation support are fixed at the bottom of the bearing secondary beam, the multiple midspan shock insulation supports are located in the middle of the bearing secondary beam, the multiple beam end shock insulation supports are located at the end of the bearing secondary beam, and the multiple bearing secondary beams are fixed below the steel bar truss building bearing plate in parallel through studs.

2. A seismic isolation floor system as claimed in claim 1, wherein the supporting secondary beam is H-section steel, and the clearance between the lower flange of the H-section steel and the functional recoverable steel frame beam or the sliding secondary beam is greater than 5mm and less than the height of the seismic isolation support.

3. The seismic isolation floor system of claim 1, wherein the midspan seismic isolation bearing and the beam-end seismic isolation bearing are connected with the secondary support beam by bolts or welds; the midspan shock insulation support and the beam end shock insulation support can be connected with the steel frame beam or the sliding secondary beam with the recoverable function through bolts or welding seams.

4. The isolated floor system of claim 1, wherein the clearance between the end surface of the beam-end isolated bearing upper connecting plate close to the steel frame column wall and the steel frame column wall is greater than or equal to 0.55 times the diameter of the beam-end isolated bearing and less than 200mm, and the clearance is used for arranging an anti-vibration gap or arranging a high-damping rubber block.

5. The seismic isolation floor system of claim 1, wherein the plurality of mid-span seismic isolation supports and the plurality of beam-end seismic isolation supports are spaced apart on the supporting secondary beam, a distance between adjacent seismic isolation supports is 1m-3m, and the seismic isolation supports are arranged in a position to form an orthogonal grid, wherein when structural arrangement causes the seismic isolation supports to deviate from the orthogonal axis, the offset distance is less than or equal to 500 mm.

6. A vibration-isolated floor system according to claim 1, wherein said plurality of supporting secondary beams are arranged along the axis of the recoverable functional steel frame beam or sliding secondary beam.

7. A vibration-isolated floor system according to claim 1, wherein the spacing between the pegs is greater than or equal to 6 peg diameters and less than or equal to 300 mm.

8. The isolated floor system of claim 1, wherein the midspan isolated bearing and the beam-end isolated bearing are lead rubber bearings or high damping rubber bearings.

9. The isolated floor system of claim 1, wherein the mid-span isolated bearing and the beam-end isolated bearing each comprise an isolated bearing upper connecting plate, an isolated bearing body and an isolated bearing lower connecting plate, and the connecting plate width is less than the steel beam flange width.

Technical Field

The invention relates to the technical field of steel structures with recoverable functions, in particular to a shock insulation floor system suitable for steel structures with recoverable functions after earthquakes.

Background

In recent years, a plurality of earthquakes show that human beings face the comprehensive threat of earthquakes, but China is in the Pacific ocean earthquake zone and the Mediterranean-Himalayas earthquake zone, the earthquake activities are frequent, and Wenchuan, Jade Tree, Yaan and Ludian earthquakes bring tragic training to people. The seismic isolation technology is mainly a structural seismic isolation technical measure which is adopted by arranging a seismic isolation device or a seismic isolation mechanism below the bottom surface of a building structure to weaken the energy input to the structure above the ground by seismic motion and reduce the structural vibration. The seismic isolation technology can be divided into two types, one type is base isolation, namely a seismic isolation support is arranged on the top surface of a base to limit seismic energy from entering an upper structure; the other type is interlayer shock insulation, namely a shock insulation support is arranged on a certain floor of a building, and the seismic action of the floor above the shock insulation support is reduced. The seismic isolation technology is one of the most important achievements of seismic engineering in the world for 40 years, and the use of the basic seismic isolation technology enables the building not to collapse in the earthquake really, so that the seismic isolation technology becomes one of the most effective means for relieving earthquake disasters.

The cable prestressed steel frame with the restorable function can exert the advantages of a prestressed steel structure, and has the advantages of controlling structural damage, reducing or eliminating residual deformation, being easy to repair after a strong earthquake and the like. However, under normal working conditions, the functional steel frame can be restored, because of the opening between the long beam and the short beam, the frame where the functional steel frame is located has an expansion effect. In the recoverable functional system, the adopted common steel frame floor system has an inhibiting effect on an opening mechanism of the floor system, and the resetting effect of the floor system is influenced.

Therefore, there is a need to develop a floor slab capable of adapting to a steel frame with recoverable function, so that the floor slab can bear vertical load and transmit horizontal force without interfering with an opening mechanism of the steel frame with recoverable function.

Disclosure of Invention

The invention provides a shock insulation floor system suitable for a steel structure capable of recovering functions after shock, and aims to overcome the defects in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme.

A seismic isolation floor system suitable for a post-earthquake recoverable function steel structure, comprising: the steel bar truss floor support plate comprises a steel bar truss floor support plate, a plurality of midspan shock insulation supports, a plurality of beam end shock insulation supports and a plurality of supporting secondary beams;

the lower ends of the midspan shock insulation support and the beam end shock insulation support are fixed on a recoverable functional steel frame beam or a sliding secondary beam below the midspan shock insulation support and the beam end shock insulation support, the upper end of the midspan shock insulation support and the upper end of the beam end shock insulation support are fixed at the bottom of the bearing secondary beam, the multiple midspan shock insulation supports are located in the middle of the bearing secondary beam, the multiple beam end shock insulation supports are located at the end of the bearing secondary beam, and the multiple bearing secondary beams are fixed below the steel bar truss building bearing plate in parallel through studs.

Preferably, the supporting secondary beam is H-shaped steel, and the clearance between the lower flange of the H-shaped steel and the steel frame beam or the sliding secondary beam with the recoverable function is larger than 5mm and smaller than the height of the shock insulation support.

Preferably, the midspan shock-insulation support and the beam-end shock-insulation support are connected with the secondary bearing beam through bolts or welding seams; the midspan shock insulation support and the beam end shock insulation support can be connected with the steel frame beam or the sliding secondary beam with the recoverable function through bolts or welding seams.

Preferably, the clearance between the end face of the beam-end vibration-isolating support upper connecting plate close to the steel frame column wall and the steel frame column wall is greater than or equal to 0.55 times of the diameter of the beam-end vibration-isolating support and less than 200mm, and the clearance is used for arranging a vibration-proof joint or a high-damping rubber block.

Preferably, the multiple midspan shock-insulation supports and the multiple beam-end shock-insulation supports are arranged on the supporting secondary beam at intervals, the distance between every two adjacent shock-insulation supports is 1-3 m, the arrangement positions of the shock-insulation supports form an orthogonal grid, and when structural arrangement causes the shock-insulation supports to deviate from an orthogonal axis, the offset distance is smaller than or equal to 500 mm.

Preferably, the plurality of supporting secondary beams are arranged along the axis of the recoverable functional steel frame beam or the sliding secondary beam.

Preferably, the spacing between the pegs is greater than or equal to 6 peg diameters and less than or equal to 300 mm.

Preferably, the midspan shock-insulation support and the beam-end shock-insulation support are lead core rubber supports or high-damping rubber supports.

Preferably, midspan isolation bearing and beam-ends isolation bearing all include isolation bearing upper junction plate, isolation bearing body and isolation bearing lower junction plate, and the connecting plate width is less than the girder steel edge of a wing width.

According to the technical scheme provided by the invention, the shock insulation floor system suitable for the steel structure with the function recoverable after the earthquake is provided, and the invention aims at the problem that the deformation between the opening mechanism and the floor system is inconsistent in the existing structure with the function recoverable, and the shock insulation system is arranged in the structure of the steel frame with the function recoverable, so that the vertical load bearing and the horizontal force transmission can be ensured, and the opening mechanism of the steel frame with the function recoverable can not be hindered; the positions of the rubber shock insulation supports can be flexibly arranged according to requirements and shock insulation targets, the floor is prevented from being in contact with a column wall when relative displacement occurs between the floor and the main structure, the opening of the recoverable functional frame is prevented from being blocked, and two types of shock insulation support connecting plates are prevented from exceeding the flange parts of the recoverable functional steel frame beam and the sliding secondary beam.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of an overall structure of a seismic isolation floor system suitable for a steel structure with a function of recovering after earthquake;

FIG. 2 is a schematic view of a structure of a secondary beam for supporting in a seismic isolation floor system;

FIG. 3 is a schematic structural diagram of the relationship between the seismic isolation floor system and the column connection system in the steel structure with recoverable function and the beam system of the steel frame with recoverable function;

FIG. 4 is a schematic plan view of a secondary beam for supporting in a seismic isolation floor system;

FIG. 5 is a schematic perspective view showing the positional relationship between the seismic floor system and the column connection system in the steel structure with recoverable function and the beam system of the steel frame with recoverable function;

FIG. 6 is a schematic view of a beam-end seismic isolation bearing in a seismic isolation floor system;

FIG. 7 is a schematic view of a midspan seismic isolation bearing in a seismic isolation floor system;

FIG. 8 is a schematic view of a gap between a steel bar truss floor support plate and a steel frame column in a seismic isolation floor system;

FIG. 9 is a schematic view of an opening structure of a steel frame beam with a recoverable function;

description of reference numerals:

1-midspan shock insulation support; 2-beam end shock insulation support; 3-supporting the secondary beam; 4-a stud; 5-steel bar truss floor support plate;

11-connecting plate on midspan shock insulation support; 12-midspan seismic isolation support body; 13-span middle isolation support bolt holes; 14-a mid-span shock insulation support lower connecting plate;

21-beam end vibration isolation support upper connecting plate; 22-beam end vibration isolation support body; 23-beam end vibration isolation support bolt holes; 24-beam end seismic isolation support lower connecting plate;

51-beam end vibration isolation support and steel frame column gap;

a-a seismic isolation floor system; b, steel columns; c-recoverable functional steel frame beam; d-sliding secondary beam; e-opening.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.

Examples

Fig. 1 is a schematic view of the overall structure of a seismic isolation floor system suitable for a steel structure with post-earthquake recoverable function in this embodiment, and referring to fig. 1, the system includes: the steel bar truss floor carrier plate 5, a plurality of span centre isolation bearing 1, a plurality of beam-ends isolation bearing 2 and a plurality of bearing secondary beam 3.

FIG. 2 is a schematic diagram of a structure of a bearing secondary beam in a seismic isolation floor system, FIG. 3 is a schematic diagram of a structure of a position relation between the seismic isolation floor system and a column connecting system and a structural diagram of a position relation between the seismic isolation floor system and a steel frame beam system with a recoverable function in a steel structure with a recoverable function, FIG. 4 is a schematic diagram of a plane of the bearing secondary beam in the seismic isolation floor system, FIG. 5 is a schematic diagram of a position relation between the seismic isolation floor system and a column connecting system and a steel frame beam system with a recoverable function in the steel structure with a recoverable function, as shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the lower ends of a midspan seismic isolation support 1 and a beam end seismic isolation support 2 are fixed on a steel frame beam C or a sliding secondary beam D with the lower part, the upper end of the seismic isolation support 1 and the upper end of the midspan seismic isolation support 2 are fixed on the bottom of the bearing secondary beam 3, a plurality of the seismic isolation support 1 is located at the middle part of the bearing secondary beam 3, a plurality of the beam end seismic isolation support 2 is located at the end part of the bearing secondary beam 3, and a plurality of supporting secondary beams 3 are fixed below the steel bar truss floor bearing plate 5 in parallel through studs.

In the recoverable functional steel frame structure, a steel bar truss building bearing plate 5 is supported on a recoverable functional steel frame beam C and a sliding secondary beam D through a plurality of midspan shock insulation supports 1 and a plurality of beam end shock insulation supports 2, a supporting secondary beam 3 is arranged between adjacent shock insulation supports on the same beam, the steel bar truss building bearing plate 5 is erected on the supporting secondary beam to form a shock insulation floor, and a shock insulation floor system A with the recoverable functional steel structure is formed between the steel bar truss building bearing plate 5 and a main structure. And after the sliding secondary beam D, the steel frame beam C with the recoverable function and the steel column B are installed, installing the shock insulation floor system A. The seismic isolation floor system a achieves the purpose of ensuring the vertical load bearing and horizontal force transmission, and not interfering with the opening E mechanism of the recoverable functional steel frame beam system C, as shown in fig. 9.

Specifically, the plurality of supporting secondary beams 3 are arranged along the axis of the steel frame beam or the sliding secondary beam with the recoverable function. A plurality of midspan isolation bearing 1 and a plurality of beam-ends isolation bearing 2 arrange on bearing secondary beam 3 at interval, and the distance between the adjacent isolation bearing is 1m-3m, and the position of arranging of isolation bearing forms the quadrature net, and when structural arrangement leads to the skew quadrature axis of isolation bearing, the skew distance is less than or equal to 500 mm.

Wherein, midspan isolation bearing 1 and beam-ends isolation bearing 2 are lead rubber bearing or high damping rubber bearing. Fig. 6 is a schematic diagram of a beam-end seismic isolation support in a seismic isolation floor system, fig. 7 is a schematic diagram of a mid-span seismic isolation support in the seismic isolation floor system, and referring to fig. 6 and 7, the mid-span seismic isolation support 1 comprises a mid-span seismic isolation support upper connecting plate 11, a mid-span seismic isolation support body 12 and a mid-span seismic isolation support lower connecting plate 14; the beam-end isolation support comprises a beam-end isolation support upper connecting plate 21, a beam-end isolation support body 22 and a beam-end isolation support lower connecting plate 24. The widths of the mid-span vibration-isolating support upper connecting plate 11, the mid-span vibration-isolating support lower connecting plate 14, the beam-end vibration-isolating support upper connecting plate 21 and the beam-end vibration-isolating support lower connecting plate 24 are all smaller than the width of a steel beam flange.

It should be noted that the supporting secondary beam 3 in this embodiment is H-shaped steel, the acting force between the H-shaped steel and the steel bar truss floor support plate is enhanced by welding studs 4 above the H-shaped steel, the gap between the lower flange of the H-shaped steel and the steel frame beam C or the sliding secondary beam D with recoverable function is greater than 5mm and smaller than the height of the seismic isolation support,

and under the action of the load of the auxiliary area, the distance between the steel frame beam C or the sliding secondary beam D with the function of recovering the distance still has a certain distance, and the steel frame beam C or the sliding secondary beam D does not contact with the sliding secondary beam D, so that the force transmission path of the shock insulation floor system A is influenced. The connecting pins 4 are used for connecting, and a supporting space is provided for the profiled steel plates in the steel bar truss floor bearing plate 5.

The midspan shock insulation support 1 and the beam end shock insulation support 2 are connected with the bearing secondary beam 3 through bolts or welding seams; the midspan shock insulation support 1 and the beam end shock insulation support 2 can be connected with the steel frame beam C or the sliding secondary beam D with the recoverable function through bolts or welding seams. When the connection is realized by adopting the bolts, bolt holes are reserved in the shock insulation support connecting piece. As shown in fig. 6 and 7, the midspan seismic isolation support and the beam-end seismic isolation support are respectively provided with midspan seismic isolation support bolt holes 13 and beam-end seismic isolation support bolt holes 23.

Fig. 8 is a schematic diagram of a gap between a steel bar truss floor support plate and a steel frame column in a seismic isolation floor system, and referring to fig. 8, the gap between the end surface of the upper connecting plate 21 of the end seismic isolation support close to the steel frame column wall and the steel frame column wall is more than or equal to 0.55 times of the diameter of the beam end seismic isolation support and less than 200mm, and the gap is used for setting a seismic isolation joint or a high damping rubber block.

The spacing between the pegs is greater than or equal to 6 peg diameters and less than or equal to 300 mm.

It should be noted that in this embodiment, the connection between the outer wall of the steel frame structure capable of recovering the function and the main body structure is an external hanging type.

When a bidirectional earthquake is considered, the recoverable functional steel frame beam system C can generate openings in two directions to form a bidirectional expansion effect, and by adopting the seismic isolation floor system A, the steel bar truss floor bearing plate 5 can still bear vertical load without deformation, and horizontal force is transmitted to the recoverable functional steel frame structure through the seismic isolation support.

The method for arranging the shock insulation floor system suitable for the steel structure with the function of recovering after earthquake comprises the following steps:

firstly, connection among the midspan shock insulation support 1, the beam end shock insulation support 2, the steel frame beam C with the recoverable function and the sliding secondary beam D is completed, welding or bolt connection can be adopted, secondly, connection between the bearing secondary beam 3 and the two types of shock insulation supports is carried out, connection can be carried out through welding seams in a factory, connection can also be carried out through high-strength bolts in a construction site, then a steel bar truss floor bearing plate 5 is erected at the upper flange of the bearing secondary beam 3, studs 4 are welded, concrete is poured finally, and after concrete is finally set, shock-proof seams or high-damping rubber blocks are arranged between the steel bar truss floor bearing plate 5 and a steel column.

It will be appreciated by those skilled in the art that the number of configurations shown in FIG. 1 for simplicity only may be less than that of an actual system, but such omissions are clearly not to be considered as a complete disclosure without affecting the clarity of the embodiments of the invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.