CN214462924U

CN214462924U - Earthquake area UHPC temporary board house

Info

Publication number: CN214462924U
Application number: CN202023121765.0U
Authority: CN
Inventors: 李勇浩; 韦芳洲; 范学明; 马海涛; 魏鹏; 徐郁峰
Original assignee: South China University of Technology SCUT; Guangzhou University
Current assignee: South China University of Technology SCUT; Guangzhou University
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-10-22
Anticipated expiration: 2030-12-22

Abstract

The utility model provides a UHPC temporary board house in earthquake area, which comprises a UHPC prestressed wall, a UHPC ribbed floor slab and an accessory facility, wherein prestressed steel bars are arranged in the wall body of the UHPC prestressed wall; the UHPC ribbed floor is fixedly positioned at the top of the UHPC prestressed wall; the auxiliary facilities comprise a door and a window, and the door and the window are both arranged on the UHPC prestressed wall. Also provides a method for erecting the temporary board house, which comprises the steps of digging a groove and constructing a foundation; assembling the prefabricated UHPC prestressed wallboard into a UHPC prestressed wall; covering and fixing a UHPC ribbed floor slab on the top of the UHPC prestressed wall; doors and windows were installed on UHPC pre-stressed panels. The utility model provides an interim board house possesses good thermal-insulated, syllable-dividing and fire resistance, and abrasion resistance can be good, can circulate repetitious usage, and economic benefits is high, and adopts the prestressed wall to make the overall stability of board house high, and shock resistance is strong, is difficult for receiving the damage in adverse circumstances such as strong wind, heavy rainfall, earthquake.

Description

Earthquake area UHPC temporary board house

Technical Field

The utility model belongs to the technical field of the concrete board house of temporary building, a earthquake area UHPC temporary board house is related to.

Background

The traditional movable board house is an economical movable board house which takes a color steel plate as a framework, takes a sandwich plate as a containment material, performs space combination by standard modulus series and adopts bolt connection as components. The universal standardization of the temporary building is realized, the temporary building can be assembled and disassembled conveniently and quickly, and meanwhile, the board house is wide in applicable terrain and can be located on hills, hills and grasslands.

At present, the mainstream movable board house takes a color steel plate as a framework and takes a sandwich board as a surrounding material. The common board house has lighter weight, is convenient to transport, assemble and disassemble, and is generally used for various construction sites and disaster areas to serve as offices, civil dormitories, temporary arrangement rooms and the like. However, the existing problems of the color steel plate house are mainly as follows: (1) poor heat insulation performance, poor heat insulation effect, cold winter and hot summer; (2) the sound insulation effect is poor, the noise is easily influenced by external environment noise, and the interference of rest and work of residents is large; (3) the fire resistance is poor, and open fire furnaces cannot appear indoors; (4) the steel framework is easy to corrode, and maintenance work such as rust removal, paint brushing, renovation and the like needs to be carried out regularly; (5) the shock resistance is poor, and the material is extremely easy to damage in severe environments such as field strong wind, strong rainfall, earthquake and the like.

At present, the main building material of the permanent housing in China is a reinforced concrete structure or a steel structure. The reinforced concrete structure has heavy self weight and poor anti-seismic performance, and the concrete pouring construction period is long, so that the reinforced concrete structure is not suitable for being used as a temporary house structure. The steel structure is convenient to splice, has light dead weight and high strength, and is the first choice building material for temporary houses. However, because the steel structure is expensive, the pure steel structure is rarely adopted as a temporary housing in practical use.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists in the current, the utility model provides an and the interim board house of earthquake area UHPC and the method of erectting, the performance such as antidetonation, weight, durability, the fire behavior of the interim board house of UHPC that provides obtains great promotion, and improves the overall stability of board house through adopting the prestressed wall.

In order to realize the purpose of the utility model, the utility model provides a UHPC temporary board house in earthquake areas, which comprises a bottom board, a UHPC prestressed wall, a UHPC ribbed floor and accessory facilities,

the UHPC pre-stressed wall is fixedly positioned on the side of the bottom plate;

prestressed steel bars are arranged in the wall body of the UHPC prestressed wall;

the UHPC ribbed floor slab is fixedly positioned at the top of the UHPC prestressed wall;

the subsidiary facilities comprise a door and a window, and the door and the window are both arranged on the UHPC pre-stressed wall.

Furthermore, the UHPC pre-stressed wall comprises a plurality of UHPC wallboards, and the UHPC wallboards are spliced in sequence to form the UHPC pre-stressed wall.

Further, the thickness of the UHPC panel is between 100mm and 200 mm. The thickness is defined so as to be as light as possible, adapted to the temporary housing, facilitating transport, mounting and dismounting. If the thickness is too large, it is not suitable for temporary housing.

Furthermore, the prestressed reinforcements of the wall body of the UHPC prestressed wall are distributed in an X-shaped cross manner. The prestressed reinforcement of this application wall body adopts the X type to cross to lay, is favorable to the wall body to bear the side direction load for when guaranteeing the whole full cross-section pressurized of wall body, also played the purpose that prevents wall body lateral deformation, reduced the whole rocking of house that the strong wind arouses effectively.

Further, UHPC ribbed floor includes UHPC floor and the fixed many UHPC ribs that set up on the UHPC floor, and many UHPC ribs include first rib and second rib, parallel arrangement each other between the first rib, parallel arrangement each other between the second rib, and crisscross setting between first rib and the second rib. This application floor adopts rib shape floor, when keeping certain structural rigidity, has saved building material as far as possible.

Further, two layers of reinforcing mesh are arranged in the thickness direction in the UHPC floor slab. The upper layer and the lower layer of reinforcing mesh are arranged, so that the bearing capacity of the UHPC floor is ensured, and cracks caused by concrete shrinkage can be effectively avoided.

Furthermore, the two layers of reinforcing meshes are defined as an upper layer reinforcing mesh and a lower layer reinforcing mesh, the reinforcing steel bars of the upper layer reinforcing mesh and the lower layer reinforcing mesh are distributed in a staggered mode in the longitudinal direction and the transverse direction, and the lower layer reinforcing mesh is distributed in the UHPC ribs. The lower layer of reinforcing mesh is arranged inside the ribs, and the upper layer of reinforcing mesh is arranged longitudinally and transversely, so that the load in all directions can be resisted, and the material has obvious anisotropy.

Compared with the prior art, the utility model discloses beneficial effect that can realize is at least as follows:

(1) because the strength of the UHPC material is far higher than that of the common concrete structure, the consumption of the main building material of the UHPC board house is far lower than that of the common concrete structure, and the overall weight of the UHPC temporary board house is relatively light. The inertia force and the seismic response of the structure under the action of the seismic load are far smaller than those of a common concrete structure. The characteristic makes the UHPC board house very suitable for earthquake-prone areas.

(2) Because the UHPC material is added with the steel fiber, the material has certain toughness and ductility, and the UHPC wall and the UHPC floor have certain energy consumption capability under the action of earthquake load. The characteristic can greatly improve the earthquake resistance of the house.

(3) Due to the high strength of UHPC material, less UHPC material is used. This results in a UHPC board house with smaller cross-sectional wall and floor areas and a lower structural stiffness. Under the condition that the whole structure is deformed laterally, the UHPC wall has the characteristics of large deformation and large stress. On the basis of the steel bar UHPC wall body, the prestressed steel bars are additionally arranged, so that the tensile strength of the UHPC material can be effectively improved, the lateral movement resistance of the UHPC wall body is improved, and the seismic performance of the UHPC board house is further improved. The ultimate compressive strength of the common concrete structure is lower, and the same effect cannot be achieved by increasing the prestress under the same material consumption.

(4) The price of the UHPC building material is higher than that of the traditional concrete house structure, and the cost of applying the UHPC board house in a non-earthquake area is higher. In earthquake areas, ordinary concrete board houses are not suitable for construction due to the characteristics of poor earthquake resistance, large self-weight and the like of materials. The application is directed at a novel board house with good earthquake resistance developed in earthquake areas.

(5) The UHPC prestressed wall is produced in a prefabricated factory by adopting a pretensioning method, so that the production efficiency can be improved on the premise of ensuring the quality, the cost is further reduced, and the UHPC prestressed wall is more environment-friendly.

(6) In general, cracking of UHPC is likely to occur. The cracking result mainly comprises (a) the steel bars in the wall body can contact the outside air, and the steel bars are easy to rust; (b) the integrity of the structure is damaged after the UHPC cracks, the whole wall body can not be used as a complete component to bear the external action of the structure, and at the moment, the bearing capacity is reduced, and the structure is unsafe. Therefore, the UHPC prestressed wall is adopted, prestress is applied in the UHPC prestressed wall, the UHPC prestressed wall artificially applies pressure to the structure before the structure is subjected to the action of external force load, the generated prestressed state is used for reducing or offsetting tensile stress caused by the external load, namely the defect of tensile strength of the UHPC prestressed wall is made up by means of higher compressive strength of the UHPC prestressed wall, and the purpose of delaying the cracking of concrete in a tension area is achieved. The application of the prestress can completely avoid tensile stress of the UHPC wall body caused by the factors of temperature, external load, uneven settlement of the foundation and the like received by the UHPC wall body, and further avoid the cracking phenomenon.

(7) Because the prestressed reinforcement is arranged in the UHPC prestressed wall to apply prestress, the UHPC component can improve the shearing resistance and the fatigue resistance.

(8) Because the prestressed reinforcement is arranged in the UHPC prestressed wall to apply prestress, the UHPC member can effectively save building materials (40-50 percent of steel and 20-40 percent of UHPC can be saved), and is more energy-saving and environment-friendly.

(9) Because of the adoption of the UHPC material, the UHPC material has good bonding property with the steel bar or the steel strand and the compactness of the UHPC material, the anchoring length and the lap joint length of the steel bar in the UHPC wall body can be greatly reduced, and the thickness of the protective layer of the steel bar can be greatly reduced. This also enables UHPC walls to be made thinner and more economical. The compression resistance of the UHPC material is at least 150MPa, which is far higher than that of common concrete by 30MPa to 40 MPa. The thickness of the floor and the wall can be greatly reduced, the building materials are effectively saved, and the environment protection and energy saving are facilitated.

(10) Because UHPC has high strength, high toughness and high durability's characteristics, adopt the interim board house of UHPC material preparation to have light in weight, good durability, advantage such as good fire resistance, to the performance of traditional board house very big promotion. Meanwhile, because the UHPC is a concrete-based building material, the cost of raw materials is lower, the price is far lower than that of a steel structure, and the total cost of the UHPC board house is lower. Therefore, the UHPC board house not only keeps the advantages of strong fire resistance, low price and good durability of the concrete house structure, but also has the advantages of light weight, good earthquake resistance, high strength and the like of a steel house.

(11) The wall and the plate with specific structures are prefabricated by UHPC materials, so that the advantages of light weight, shock resistance, easy installation and transportation of the original movable board house are kept, and the defects of poor heat insulation performance, poor sound insulation effect and poor fire resistance of the traditional movable board house are overcome.

(12) Prestressed steel bars arranged in an X shape are arranged in a prefabricated UHPC prestressed wall, and steel bars are arranged in a UHPC ribbed floor slab, so that the stability of the peripheral wall body of the slab house is improved to a certain extent, and the whole house shaking caused by strong wind is relieved; and benefits from the high strength performance of UHPC, can be installed without steel framework on site, and reduces the installation procedures.

(13) In the traditional movable plank house, a steel framework is adopted as a framework, and a sandwich board is used as a surrounding material, so that the steel framework is required to be periodically subjected to maintenance work such as derusting, painting, renovation and the like, and the sandwich board has general strength and is easy to lose in the transportation or use process. And because the UHPC material is adopted, the prestressed wall and the floor have good wear resistance, can be recycled for multiple times, and have high economic benefit.

(14) Because the wall body and the floor slab are made of UHPC materials, necessary temporary articles can be conveniently fixed on the wall body by punching, nailing and the like according to use requirements. In the traditional board house, the surface of the color steel plate bears small concentrated force, so that holes are difficult to be punched and temporary articles are difficult to be fixed.

(15) Easy to pre-embed, assemble and connect. The main material of the building is UHPC material, the bonding property of the main material and metal materials such as steel is far better than that of common concrete, so that various hardware can be embedded in a UHPC floor and a wall conveniently, and assembly construction and subsequent use of the embedded hardware are facilitated. This is also not possible with conventional color steel sheet material board houses.

(16) This application has kept the modular characteristics of traditional board house, and door and window size is fixed, and the wall body size is fixed, and the prefabricated construction of batch production of being convenient for and transportation, assembly and dismantlement.

(17) Because the non-earthquake area can adopt the reinforced concrete board house with higher cost performance, the application is more suitable for the earthquake area.

Drawings

Fig. 1 is the assembly schematic diagram of the UHPC temporary plank house of the present invention.

Fig. 2 is an overall schematic view of an embodiment of the UHPC temporary board house of the present invention.

Fig. 3 is the prefabricated ribbed floor of UHPC material of the utility model schematic diagram.

Fig. 4 is a schematic view of the UHPC prefabricated prestressed wallboard of the present invention.

Fig. 5 is a schematic cross-sectional view of fig. 1.

Fig. 6 is the utility model discloses a UHPC temporary board house door and window schematic diagram.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1-6, the temporary UHPC board house for an earthquake region according to the present embodiment includes a bottom board, UHPC pre-stressed walls 1, UHPC ribbed floors 2, and auxiliary facilities 3. The subsidiary facilities 3 include doors and windows, both of which are provided on the UHPC pre-stressed wall 1.

In this embodiment, the bottom plate is made of concrete.

The UHPC prestressed wall 1 is fixed on the side of the bottom plate, common steel bars and prestressed steel bars are arranged in the wall body of the UHPC prestressed wall 1, and the prestressed steel bars are fixed in the wall body through a pretensioning method. The UHPC prestressed wall 1 can effectively improve the overall stability of the wall body. The UHPC prestressed wall 1 comprises a plurality of UHPC wallboards, the thickness of the UHPC wallboards is between 100mm and 200mm, and the UHPC prestressed wall 1 is formed by sequentially splicing the plurality of UHPC wallboards. Particularly, the fixing mode between adjacent UHPC wallboards can adopt the connection mode commonly used, for example can splice through mortise and tenon joint, can weld through pre-buried steel member, also can be through bolted connection, can also all be connected to on the solitary connection billet.

The UHPC ribbed floor slab 2 is fixedly arranged on the top of the UHPC prestressed wall 1. Specifically, the UHPC ribbed floor 2 and the UHPC prestressed wall 1 can be fixed by common connection modes, such as placing the floor in a reserved embedded groove and then pouring epoxy resin and other building glue, connecting by hinges or angle steel, and splicing by pre-buried connecting pieces.

In this embodiment, UHPC ribbed floor 2 includes UHPC floor and the fixed many UHPC ribs that set up on UHPC floor, and many UHPC ribs include first rib and second rib, parallel arrangement each other between the first rib, parallel arrangement each other between the second rib, and vertically and horizontally staggered sets between first rib and the second rib, and first rib and second rib all pour with UHPC floor is whole. After the general floor slab can receive external force, can produce the moment of flexure and the shear force of vertical and horizontal two directions, add the bearing capacity that crisscross rib that sets up can effectively promote the structure this moment.

In this embodiment, two layers of reinforcing mesh are arranged in the thickness direction in the UHPC floor. The two layers of reinforcing meshes are defined as an upper layer reinforcing mesh and a lower layer reinforcing mesh, the reinforcing steel bar arrangement of the lower layer reinforcing mesh is consistent with the direction of the ribs, the lower layer reinforcing mesh is positioned inside the UHPC ribs, and the reinforcing steel bars of the upper layer reinforcing mesh are distributed in a criss-cross mode in the UHPC floor to resist loads in all directions.

The interim board house that this embodiment provided, floor and wall body all adopt UHPC material to make, possess good thermal-insulated, give sound insulation and fire-resistant and anti-seismic performance, and wear resistance is good, can circulate repetitious usage, and economic benefits is high, and adopts prestressed wall to make the overall stability of board house high, and shock resistance is strong, is difficult for receiving the damage in adverse circumstances such as strong wind, heavy rainfall, earthquake.

The method for erecting the UHPC temporary board house in the earthquake region comprises the following steps:

1. and (3) grooving the foundation, treating the foundation, paying off the outline of the board house, and directly ramming and compacting the temporary building of the board house, or directly selecting hard soil as the foundation.

2. And (5) constructing a foundation, and pouring a layer of C20 concrete with the thickness of 150 mm.

3. And the mounting line is placed to ensure that the required size is accurate.

4. And hoisting the UHPC prestressed wall by using a hoisting device.

5. And installing the UHPC ribbed floor slab on the top of the UHPC prestressed wall through a hoisting device. If the board houses with upper and lower floors or more than two floors are built, stairs and corridors also need to be installed.

6. And installing the door and the window on the UHPC prestressed wall.

The method for erecting the UHPC prefabricated house provided by the embodiment does not need to install bearing frameworks such as the upright post and the cross beam, and is convenient and quick to assemble.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a temporary board house of earthquake area UHPC which characterized in that: comprises a bottom plate, a UHPC prestressed wall (1), a UHPC ribbed floor slab (2) and accessory facilities (3),

the UHPC pre-stressed wall (1) is fixedly positioned on the side of the bottom plate;

prestressed steel bars are arranged in the wall body of the UHPC prestressed wall (1);

the UHPC ribbed floor (2) is fixedly positioned at the top of the UHPC prestressed wall (1);

the auxiliary facilities (3) comprise doors and windows, and the doors and the windows are arranged on the UHPC pre-stressed wall (1).

2. The UHPC temporary board house of claim 1, wherein: the bottom plate is made of concrete.

3. The UHPC temporary board house of claim 1, wherein: the UHPC pre-stressed wall (1) comprises a plurality of UHPC wallboards, and the UHPC wallboards are spliced in sequence to form the UHPC pre-stressed wall (1).

4. The UHPC temporary board house of claim 2, wherein: the thickness of the UHPC wallboard is between 100mm and 200 mm.

5. The UHPC temporary board house of claim 1, wherein: the prestressed reinforcements of the wall body of the UHPC prestressed wall (1) are arranged in an X-shaped cross manner.

6. The UHPC temporary board house of any one of claims 1-5, wherein: UHPC floor (2) with rib includes UHPC floor and the fixed many UHPC ribs that set up on UHPC floor, and many UHPC ribs include first rib and second rib, parallel arrangement each other between the first rib, parallel arrangement each other between the second rib, and vertically and horizontally staggered arrangement between first rib and the second rib.

7. The UHPC temporary board house of claim 5, characterized in that: two layers of reinforcing steel bar nets are arranged in the thickness direction of the UHPC floor slab.

8. The UHPC temporary board house of claim 7, wherein: and defining the two layers of reinforcing meshes as an upper layer reinforcing mesh and a lower layer reinforcing mesh, wherein the reinforcing bars of the upper layer reinforcing mesh and the lower layer reinforcing mesh are distributed in a staggered mode in the longitudinal direction and the transverse direction, and the lower layer reinforcing mesh is distributed in a plurality of UHPC ribs.