Composite section for blast-resistant wall end shear joint

Abstract

The present application provides an anti-blast wall end shearing joint composite profile, comprising a first shell and a second shell with the same structure, the first shell and the second shell enclosing a multifunctional chamber, the opposite sides of the first shell and the second shell being provided with a transverse partition, from the direction close to the chamber to the direction away from the chamber, the multifunctional chamber being divided into a fireproof and flame-retardant unit, a heat insulation unit and a waterproof and moisture-proof unit; the first shell being provided with a pre-buried fixing key relative to one side of the anti-blast wall, and the second shell being provided with a pre-buried fixing key relative to one side of the structural column. The shearing joint composite profile provided with the pre-buried fixing key ensures that the anti-blast wall and the structural column can be completely separated and no shear force is transmitted when explosion occurs. At the same time, through the combination of the fireproof and flame-retardant unit, the heat insulation unit and the waterproof and moisture-proof unit in the multifunctional chamber, the conventional building functions such as moisture-proof, heat preservation and fireproofing are well realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of construction engineering, and in particular to a composite section for a shear joint at the end of a blast-resistant wall. BACKGROUND

[0002] Blast-resistant structures with blast-resistant walls are widely used in the fields of petrochemical industry, military industry, etc., such as cabinet rooms, central control rooms, etc. As a special structural component that bears explosive loads, the blast-resistant wall has a special arrangement form of structural components compared with conventional buildings.

[0003] In the past, the blast-resistant wall was mainly arranged in a whole piece around the building, separated from the concrete columns of the main structure, connected to the roof panel at the upper end and to the rigid floor and foundation at the lower end, leaving a gap between the blast-resistant wall and the structural column to prevent the blast-resistant wall from colliding with the structural column due to out-of-plane bending deformation of the wall body after bearing the explosive load. A gap of 50-100mm is often left between the blast-resistant wall and the structural column, and the specific width needs to be determined by calculation.

[0004] Currently, the blast-resistant wall is mainly made by cast-in-place concrete. The particularity of the arrangement of the blast-resistant wall structure makes the concrete formwork work on the construction site more difficult. In order to ensure that the blast-resistant wall and the structural column have the gap distance specified in the design, special treatment of the formwork between the wall and the column is often required, or the cast-in-place concrete blast-resistant wall and the main concrete column, beam, etc. are made by using the method of pouring in several times.

[0005] In order to reduce the construction difficulty of on-site concrete formwork and pouring, shorten the construction period and ensure the construction quality, the current wall-column integrated blast-resistant wall component arrangement form is that the blast-resistant wall is arranged between the peripheral concrete structural columns of the structure, so that the outer facade of the blast-resistant wall is flush with the outer facade of the structural column. The blast-resistant wall still maintains the form of being arranged in a whole piece around the building, connected to the roof panel at the upper end and to the rigid floor and foundation at the lower end, without changing the traditional force transmission form of the blast-resistant wall, which transmits horizontal force to the roof beam structure and the rigid floor at the upper and lower ends respectively when bearing explosive loads. This wall-column integrated blast-resistant wall arrangement form well achieves the purpose of integrated formwork and simultaneous pouring of the blast-resistant wall and the peripheral structural column.

[0006] In structural design, the anti-blast wall is usually modeled as a one-way bending plate component with its upper and lower ends simply supported (supported by roof beam slab structure and ground rigid floor respectively), so that the dynamic calculation of single degree of freedom system is carried out. The previous structural arrangement in which the anti-blast wall is separated from the structure column can well meet the prerequisite assumption of the structural design. However, if the anti-blast wall is arranged in the form of wall-column integration, special treatment is required at the position where the anti-blast wall is connected with the concrete structure column on both sides, so as to prevent the anti-blast wall from becoming a two-way bending plate component with supports on all four sides. When the structure bears the blast load, due to the huge difference in the blast-impinging area, the out-of-plane bending deformation of the anti-blast wall as the main component bearing the blast load will be much larger than the bending deformation of the outer peripheral concrete column. In order to ensure that the anti-blast wall has reliable support only at the upper end and no harmful additional constraint appears on the wall-column connecting surface, when the structure bears the blast load and the shear stress appears on the wall-column connecting surface, the shear stress needs to be completely released through special treatment, so as to ensure that the anti-blast wall can deform independently and fully, and no additional horizontal force is generated on the concrete column.

[0007] There are two mainstream methods for the wall-column connecting position at present.

[0008] One method is to not arrange transverse tie steel bars at the wall-column connecting position, and to integrally pour the wall and column at the position, and no joint is arranged at the position. This method will gradually form a through crack at the connecting position due to the shrinkage deformation of the concrete itself, which not only affects the appearance of the building, but also causes the hidden danger of indoor water seepage.

[0009] Another method is to arrange a small amount of transverse tie steel bars at the wall-column connecting position, and to integrally pour the wall and column at the position, and no joint is arranged at the position. This method solves the problem of wall cracking, but the arrangement of steel bars between the wall and column will generate a horizontal action on the structure column when the anti-blast wall bears the blast load, even pull out the tie steel bars, and cause structural damage to the concrete column.

[0010] The above two methods can be improved by arranging a shear joint at the wall-column connecting position and filling the shear joint with a special profile, so as to solve the problems encountered in the actual application of the above methods and retain the advantages of the wall-column integrated anti-blast wall arrangement in construction.

[0011] Therefore, there is an urgent need to design and provide a new type of anti-blast wall end shear joint composite profile in actual engineering construction, which can not only ensure that the anti-blast wall and the structure column are completely separated (no shear force is transmitted) when the explosion occurs, so that the stress and deformation of the anti-blast wall fully meet the prerequisite assumption in structural design, but also well realize the functions of moisture-proof, heat preservation, fireproofing and other conventional building functions, which is conducive to the construction and development of anti-blast buildings. SUMMARY

[0012] The present application provides an anti-explosion wall end shearing joint composite profile to solve the defects of the prior art.

[0013] The present application adopts the following technical solutions to solve the above technical problems:

[0014] The anti-explosion wall end shearing joint composite profile comprises a first shell and a second shell with the same structure, the first shell and the second shell enclose a multifunctional cavity, and the first shell and the second shell are provided with transverse partitions on opposite sides thereof, from the side close to the room to the side away from the room, the multifunctional cavity is divided into a fireproof and flame-retardant unit, a heat insulation unit and a waterproof and moisture-proof unit; the first shell is provided with a pre-buried fixing key on one side thereof relative to the anti-explosion wall, and the second shell is provided with a pre-buried fixing key on one side thereof relative to the structural column.

[0015] In a preferred embodiment, the fireproof and flame-retardant unit is filled with fireproof rock wool in the cavity, and a flame-retardant partition plate is arranged between the two first transverse partitions and the fireproof rock wool.

[0016] In a more preferred embodiment, the flame-retardant partition plate is made of PVC or metal.

[0017] In a preferred embodiment, the heat insulation unit is filled with a foam insulation board in the cavity, and the foam insulation board is divided into two parts along a direction perpendicular to the transverse partitions.

[0018] In a more preferred embodiment, the foam insulation board is made of flame-retardant extruded polystyrene.

[0019] In a preferred embodiment, the waterproof and moisture-proof unit is folded and arranged with a waterproof roll in the cavity, the two ends of the waterproof roll are respectively sealed and fixed with the first shell and the second shell, the side of the waterproof roll close to the heat insulation unit is filled with a rubber waterstop, and a flame-retardant partition plate is arranged between the two second transverse partitions and the rubber waterstop.

[0020] In a more preferred embodiment, the waterproof roll is made of PVC.

[0021] In a preferred embodiment, a wall decoration surface layer is further arranged on the outer surfaces of the first shell and the second shell facing the room and the outside.

[0022] In a preferred embodiment, the pre-buried fixing key is an L-shaped structure extending from the first shell to the anti-explosion wall or from the second shell to the structural column.

[0023] In a preferred embodiment, the ratio of the width to the thickness of the first shell is 1:20-30.

[0024] The present application adopts the above technical scheme, and has the following technical effects compared with the prior art.

[0025] The present application guarantees that the blast-resistant wall and the structure column can be completely separated and no shear force is transmitted when explosion occurs, so that the stress and deformation of the blast-resistant wall fully meet the premise assumption in the structure design.

[0026] The combination of the fireproof and flame-retardant unit, the heat insulation unit and the waterproof and moisture-proof unit in the multifunctional chamber well realizes the conventional building functions such as moisture-proof, heat preservation and fireproofing, and greatly facilitates the construction and development of the blast-resistant building.

[0027] In the present application, the fireproof rock wool and the flame-retardant partition plate fill the cavity inside the profile on the indoor side, which protects the profile inside from being damaged due to indoor fire and effectively prevents the spread of fire from the shear joint position. The fireproof rock wool in the fireproof and flame-retardant unit is soft and deformable, and can still be well filled in the cavity after relative displacement occurs, thereby providing good fireproof and flame-retardant performance.

[0028] In the present application, the waterproof and moisture-proof unit is composed of a PVC waterproof roll and a rubber waterstop of sufficient length placed in a folded manner, which guarantees that the shear joint has the waterproof and moisture-proof functions required by the building. After deformation, the two shells of the profile move relatively and are naturally staggered, the waterproof roll in the waterproof and moisture-proof unit is naturally unfolded with the displacement, and the flame-retardant partition plate and the rubber waterstop are limited in the cavity.

[0029] In the present application, the heat insulation unit is mainly composed of two foam insulation boards placed side by side, so that the profile as a whole achieves high-level heat insulation effect. After deformation, the two shells of the profile move relatively and are naturally staggered, the two independent foam insulation boards in the heat insulation unit are naturally staggered by sliding with the relative displacement, and the heat preservation structure is not damaged.

[0030] In specific applications, the shear joint composite profile in the present application is installed in place after the reinforcement is bound, and then the concrete wall column is poured, which adopts the wall column integrated pouring mode to embed the profile well between the blast-resistant wall and the concrete structure column, thereby reducing the construction difficulty of the on-site concrete formwork and pouring, shortening the construction period and ensuring the construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a structural schematic view of an anti-blast wall end shear joint composite profile according to the present application;

[0032] Figure 2 FIG. 2 is an explosion view of the anti-blast wall end shear joint composite profile according to the present application;

[0033] Figure 3 FIG. 3 is a horizontal sectional view of the wall column connection of the shear joint composite profile without pre-buried shear joint.

[0034] Figure 4 A horizontal cross-sectional view of the wall-column connection where a pre-embedded shear joint composite profile is used:

[0035] Figure 5 This is a schematic diagram showing the deformation of the composite profile at the shear joint after the wall column has detached.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-First shell, 2-Second shell, 3-Multifunctional chamber, 31-Fireproof and flame-retardant unit, 311-Fireproof rock wool, 312-Flame-retardant partition, 32-Heat insulation unit, 321-Foam insulation board, 33-Waterproof and moisture-proof unit, 331-Waterproof membrane, 332-Rubber waterstop strip, 4-Horizontal diaphragm, 41-First horizontal diaphragm, 42-Second horizontal diaphragm, 5-Embedded fixing key, 6-Explosion-proof wall, 7-Structural column, 8-Shear joint. Detailed Implementation

[0038] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Please see Figure 1 As shown, this embodiment provides a composite profile for the end shear joint of an explosion-proof wall, including a first shell 1 and a second shell 2 with the same structure, the first shell 1 and the second shell 2 forming a multifunctional chamber 3.

[0040] Specifically, such as Figure 1 In the design, the first housing 1 has a pre-embedded fixing key 5 on one side relative to the blast wall 6, and the second housing 2 has a pre-embedded fixing key 5 on one side relative to the structural column 7. During application, the first housing 1 is tied and fixed to the reinforcing bars of the blast wall 6, and the second housing 2 is tied and fixed to the reinforcing bars of the structural column 7. After tying, the profile is placed in the shear joint 8 between the blast wall 6 and the structural column 7, as shown below. Figures 3-4 As shown in the image.

[0041] The blast-resistant wall 6 and structural column 7 are separated by a shear joint composite profile, and then concrete wall and column are poured (integral casting). The shear joint composite profile and concrete form a whole, allowing the profile to be well embedded between the blast-resistant wall and the concrete structural column, reducing the difficulty of on-site concrete formwork and pouring, shortening the construction period, and ensuring construction quality. At the same time, it ensures that in the event of an explosion, the blast-resistant wall 6 and structural column 7 can be completely separated, such as... Figure 5 As shown, shear force is not transmitted, so that the stress and deformation of the blast-resistant wall 6 fully meet the premise assumptions in the structural design.

[0042] Specifically, such as Figure 1In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor.

[0043] In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor. Figure 2 In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor.

[0044] In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor. Figure 2 In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor.

[0045] In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional cavity 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, and the multifunctional cavity 3 is divided into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor. Figure 2In the waterproof and moisture-proof unit 33, the waterproof roll 331 is folded and placed in the cavity, the two ends of the waterproof roll 331 are sealed and fixed with the first shell 1 and the second shell 2 respectively, the side of the waterproof roll 331 close to the heat insulation unit 32 is filled with the rubber waterstop 332, the rubber waterstop 332 completely fills the space between the first shell 1 and the second shell 2, the fireproof partition plate 312 is placed between the two second transverse partitions 42 and the rubber waterstop 332, and the fireproof partition plate 312 blocks the gap between the two second transverse partitions 42. Further, the material of the waterproof roll 331 is PVC. Because the shear joint composite profile itself and the interface with the concrete are tightly attached, the waterproof and moisture-proof unit 33 on the building outer side of the combined profile, no water seepage path is formed, that is, the combination of the shell and the waterproof roll 331 and the rubber waterstop 332 ensures that the shear joint has the waterproof and moisture-proof function meeting the building requirements. After deformation, the two shell bodies of the profile move relatively, are naturally staggered, the waterproof roll in the waterproof and moisture-proof unit naturally expands with displacement, keeps a closed water-blocking state, and the fireproof partition plate and the rubber waterstop are limited to move in the cavity.

[0046] In the embodiment, the first shell 1 and the second shell 2 are connected by the shear joint 4. Figures 1-4 In the embodiment, the embedded fixing key 5 extends from the first shell 1 to the blast wall 6 or from the second shell 2 to the structural column 7.

[0047] In another embodiment, the wall decoration surface layer is further included on the outer surfaces of the first shell 1 and the second shell 2 facing the indoor and outdoor.

[0048] In a specific embodiment, the ratio of the width to the thickness of the first shell 1 is 1:20-30; preferably, the ratio of the width to the thickness of the first shell 1 is 1:25. The width refers to half of the distance between the blast wall 6 and the structural column 7.

[0049] In a specific embodiment, the thickness of the shear joint composite profile is the same as the thickness of the blast wall 6. The thickness ratio of the fireproof and flame-retardant unit 31, the heat insulation unit 32 and the waterproof and moisture-proof unit 33 is 1:2-3:1.

[0050] The application will be described in detail and specifically through specific embodiments, so that the application can be better understood, but the following embodiments do not limit the scope of the application.

[0051] Embodiment 1

[0052] The shear joint composite profile at the end of the blast wall includes the first shell 1 and the second shell 2 with the same structure, and the first shell 1 and the second shell 2 enclose a multifunctional cavity 3.

[0053] Specifically, the first shell 1 and the second shell 2 are connected by the shear joint 4. Figure 1In the embodiment, the first shell 1 is provided with a pre-embedded fixing key 5 on one side relative to the blast wall 6, and the second shell 2 is provided with a pre-embedded fixing key 5 on one side relative to the structural column 7. In application, the first shell 1 is fixed with the reinforcing bars of the blast wall 6, and the second shell 2 is fixed with the reinforcing bars of the structural column 7. After binding, the profile is arranged in the shear joint 8 between the blast wall 6 and the structural column 7, as shown in Figures 3-4

[0054] As shown in Figure 1 In the embodiment, the first shell 1 and the second shell 2 enclose a multifunctional chamber 3, and the first shell 1 and the second shell 2 are provided with transverse partitions 4 on opposite sides, which divide the multifunctional chamber 3 into a fire-retardant unit 31, a heat-insulating unit 32 and a waterproof and moisture-proof unit 33 from the direction close to the indoor to the direction away from the indoor.

[0055] In the embodiment, as shown in Figure 2 In the embodiment, the fire-retardant unit 31 is filled with fireproof rock wool 311 in the chamber, and a fire-retardant partition 312 is arranged between the two first transverse partitions 41 and the fireproof rock wool 311. The heat-insulating unit 32 is filled with a foam insulation board 321 in the chamber. The waterproof and moisture-proof unit 33 is folded and arranged in the chamber, and the waterproof roll 331 is made of PVC.

[0056] The width of the first shell 1 and the second shell 2 is 20mm, and the thickness is 450mm. The thickness of the fire-retardant unit 31 is 100mm, the thickness of the heat-insulating unit is 250mm, and the thickness of the waterproof and moisture-proof unit is 100mm.

[0057] The specific embodiments of the present application are described in detail above, but they are only examples, and the present application is not limited to the specific embodiments described above. Any equivalent modifications and substitutions made by those skilled in the art to the present application are also within the scope of the present application. Therefore, any equivalent transformation and modification made without departing from the spirit and scope of the present application should be covered within the scope of the present application.​

Claims

1. An anti-ballistic wall end shear joint composite profile, characterized in that, The utility model provides a multifunctional cavity room, which comprises a first shell (1) and a second shell (2) with the same structure, the first shell (1) and the second shell (2) are opposite two sides are equipped with transverse partition (4), from the direction of being close to the room to being far from the room, the multifunctional cavity room (3) is divided into fire -retardant unit (31), heat -insulating unit (32) and waterproof and moisture -proof unit (33), the first shell (1) is equipped with pre -buried fixed key (5) to the side of blast wall (6), the second shell (2) is equipped with pre -buried fixed key (5) to the side of structural column (7), The fire -retardant unit (31) is filled with fire -proof rock wool (311) in the cavity, and a fire -retardant partition (312) is arranged between the two first transverse partitions (41) and the fire -proof rock wool (311); The fire -retardant partition (312) is made of PVC or metal; The heat -insulating unit (32) is filled with foam insulation board (321) in the cavity, and the foam insulation board (321) is divided into two parts along the direction perpendicular to the transverse partition (4); The waterproof and moisture -proof unit (33) is folded and arranged with a waterproof coiled material (331) in the cavity, the two ends of the waterproof coiled material (331) are sealed and fixed with the first shell (1) and the second shell (2) respectively, the waterproof coiled material (331) is filled with a rubber waterstop (332) on the side close to the heat -insulating unit (32), and a fire -retardant partition (312) is arranged between the two second transverse partitions (42) and the rubber waterstop (332).

2. The composite anti-ballistic wall end shear joint section according to claim 1, wherein, The foam insulation board (321) is made of flame -retardant extruded polystyrene.

3. The composite anti-ballistic wall end shear joint section according to claim 1, wherein, The waterproof coiled material (331) is made of PVC.

4. The composite anti-ballistic wall end shear joint section of claim 1, wherein, The first shell (1) and the second shell (2) further comprise a wall decoration surface layer on the outer surface facing the indoor and outdoor.

5. The composite anti-ballistic wall end shear joint section of claim 1, wherein, The pre -buried fixed key (5) is extended from the first shell (1) to the blast wall (6) or from the second shell (2) to the structural column (7), and the section is L-shaped structure.

6. The composite anti-ballistic wall end shear joint section of claim 1, wherein, The ratio of the width to the thickness of the first shell (1) is 1:20~30.

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