阅读说明：本技术 具有防火、防撞、防震功能的钢管混凝土结构及制作工艺 (Steel pipe concrete structure with fireproof, anti-collision and shockproof functions and manufacturing process ) 是由 邵严 袁满 郝勇 于 2021-07-06 设计创作，主要内容包括：本发明公开了一种防火、防撞、防震功能的钢管混凝土结构及制作工艺,该结构包括钢管混凝土结构主体和支座,所述钢管混凝土结构主体括钢管和第一保护套,钢管的内腔浇筑有混凝土层,第一保护套外壁涂有防护涂料,夹层中填充有第一石棉板；所述支座为高阻尼隔震橡胶支座,包括支座本体和支撑块,支座本体由多层钢板和橡胶构成,钢管混凝土结构主体、支撑块与支座本体通过高粘结性环氧树脂砂浆结合为一体。本发明填补了国内关于钢管混凝土柱结构防火、防撞、防震吸能能力措施的空缺,提供了一种更先进的实用防护措施,适用于地下停车场、桥梁、高架桥墩等广泛重要公共场所的建筑防撞结构。(The invention discloses a steel pipe concrete structure with fireproof, anti-collision and shockproof functions and a manufacturing process thereof, wherein the structure comprises a steel pipe concrete structure main body and a support, the steel pipe concrete structure main body comprises a steel pipe and a first protective sleeve, a concrete layer is poured in an inner cavity of the steel pipe, the outer wall of the first protective sleeve is coated with protective coating, and a first asbestos board is filled in an interlayer; the support is a high-damping shock-insulation rubber support and comprises a support body and a supporting block, wherein the support body is composed of multiple layers of steel plates and rubber, and the steel pipe concrete structure main body, the supporting block and the support body are combined into a whole through high-cohesiveness epoxy resin mortar. The invention fills the gap of domestic measures about the fireproof, anti-collision, shockproof and energy-absorbing capabilities of the steel pipe concrete column structure, provides a more advanced practical protection measure, and is suitable for building anti-collision structures in underground parking lots, bridges, overhead piers and other widely important public places.)

1. The utility model provides a steel pipe concrete structure with fire prevention, anticollision, shockproof function which characterized in that: comprises a steel pipe concrete structure main body and a support arranged at the bottom of the steel pipe concrete structure main body, wherein,

the steel pipe concrete structure main body comprises a steel pipe (1) and a first protective sleeve (2) sleeved outside the steel pipe (1), a concrete layer (3) is filled in an inner cavity of the steel pipe (1), and a first asbestos plate (4) is filled in an interlayer between the steel pipe (1) and the first protective sleeve (2);

the support comprises a support body and a supporting block (5) for supporting the support body, the support body is formed by arranging a plurality of layers of steel plates (6) and a plurality of layers of rubber (7) in a staggered mode, the outline shape of the outer edge of the support body is the same as that of the steel pipe (1), a second protective sleeve (8) is sleeved outside the support body, and a second asbestos plate (9) is filled in an interlayer between the second protective sleeve (8) and the support body;

a clamping groove (10) is formed in the supporting block (5), and the bottom of the second protective sleeve (8) is inserted into the clamping groove (10) and connected with the supporting block (5).

2. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 1, wherein: the first protective sleeve (2) and the second protective sleeve (8) are of an integrated structure, and the first asbestos plate (4) and the second asbestos plate (9) are of an integrated structure.

3. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 2, wherein: the steel pipe is characterized in that a plurality of fixing nails (11) are arranged at the upper end and the lower end of the steel pipe (1) along the circumferential equal distance of the outer wall, a plurality of fixing nails (11) are arranged at the upper end and the lower end of the first protecting sleeve (2) along the circumferential equal distance of the inner wall, and the fixing nails (11) on the steel pipe (1) and the fixing nails (11) on the first protecting sleeve (2) are arranged in a staggered mode from top to bottom.

4. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 3, wherein: the length of the fixing nail (11) is less than half of the thickness of an interlayer between the steel pipe (1) and the first protective sleeve (2).

5. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 2, wherein: an upper connecting steel plate (12) is embedded in the bottom of the concrete layer (3) in the inner cavity of the steel pipe (1), an upper reinforcing steel plate (13) is arranged on the upper portion of the support body, and the upper connecting steel plate (12) is connected with the upper reinforcing steel plate (13) through a high-strength bolt (14).

6. A fire and impact protection system as claimed in claim 2. Steel pipe concrete structure of function takes precautions against earthquakes, its characterized in that: the upper portion in supporting shoe (5) is pre-buried has lower connecting plate (15), the lower part of support body is equipped with lower floor and strengthens steel sheet (16), lower connecting plate (15) are connected with lower floor and strengthen steel sheet (16) through high strength bolt (14).

7. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 2, wherein: the outer surfaces of the first protective sleeve (2) and the second protective sleeve (8) are provided with protective coating layers.

8. The steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 2, wherein: the cross section shapes of the steel pipe (1), the first protective sleeve (2), the second protective sleeve (8) and the support body are corresponding and are all one of circular, rectangular, oval, polygonal or curved edges.

9. A steel pipe concrete structure manufacturing process with fireproof, anti-collision and shockproof functions is characterized in that: the manufacturing process comprises the following steps:

step 1, preparing a steel pipe (1) required by construction according to the size required by design, and embedding a connecting steel plate (12) at the bottom in the steel pipe (1);

step 2, pouring concrete into the inner cavity of the steel pipe (1) to form a concrete layer (3);

step 3, after the concrete in the step 2 is cured to generate certain strength, a plurality of fixing nails (11) are arranged on the outer walls of the upper end and the lower end of the steel pipe (1) at equal intervals along the circumferential direction;

step 4, after the concrete in the step 2 is completely cured, mounting the support at the bottom of the support;

step 5, wrapping a circle of asbestos plate on the peripheries of the steel pipe (1) and the support body;

and step 6, finally, sleeving a protective sleeve downwards from the top end of the steel pipe (1), and inserting the bottom of the protective sleeve into the clamping groove (10) of the support to complete the manufacture of the steel pipe concrete structure.

10. The manufacturing process of the steel pipe concrete structure with the functions of fire prevention, collision prevention and shock prevention as claimed in claim 9, wherein: and in the step S4, the support and the steel pipe (1) are installed through connecting an upper layer reinforced steel plate (13) arranged at the middle upper part of the support body with an upper connecting steel plate (12) pre-embedded at the bottom of the steel pipe (1) through a high-strength bolt (14).

Technical Field

The invention relates to the technical field of steel pipe concrete structures, in particular to a steel pipe concrete structure with fireproof, anti-collision and shockproof functions and a manufacturing process thereof.

Background

Concrete-filled steel tubes are structural members formed by filling steel tubes with concrete, and the steel tubes and the core concrete thereof can bear an external load together. Concrete has high compressive strength but weak bending resistance, while steel, especially section steel, has strong bending resistance and good elastoplasticity, but is easy to destabilize under pressure to lose axial compressive strength. The steel pipe concrete can combine the advantages of the steel pipe concrete and the concrete in structure to play a role together, so that the bearing capacity is greatly improved. The conventional steel pipe concrete stressed structural member mainly comprises various columns, beams, plates or combined structures, and is more and more widely applied to structures such as large-span, heavy-load and light bridges.

However, in the actual use process, the existing steel pipe concrete structure has the following disadvantages:

1. the inner layer structure is easy to directly bear the impact action and local buckling is easy to occur due to the action of bearing dynamic load all the year round, and finally the steel pipe concrete structure is damaged;

2. when the protection device is used for protecting coupling disasters such as fire disasters, impact disasters and address disasters, the protection capability is weaker, the protection function is single, the structure is easily damaged rapidly and is unstable, and the development and the application of the steel pipe concrete structure are limited.

Therefore, it is very important to improve the existing steel pipe concrete structure and design a steel pipe concrete structure with fireproof, anti-collision and shockproof functions and a manufacturing process thereof.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a steel pipe concrete structure with fireproof, anti-collision and shockproof functions and a manufacturing process thereof, so that the fireproof, anti-collision and anti-seismic deformation energy absorption capability of the steel pipe concrete structure when encountering fire, impact or sudden geological disasters is enhanced, and the domestic gap of measures of the steel pipe concrete structure in the aspects of coping with the fire, impact or sudden geological disasters and the like is filled.

The invention is realized by the following technical scheme:

on one hand, the invention provides a steel pipe concrete structure with fireproof, anti-collision and shockproof functions, which comprises a steel pipe concrete structure main body and a support arranged at the bottom of the steel pipe concrete structure main body, wherein:

the steel pipe concrete structure main body comprises a steel pipe and a first protective sleeve sleeved outside the steel pipe, a concrete layer is filled in an inner cavity of the steel pipe, and a first asbestos plate is filled in an interlayer between the steel pipe and the first protective sleeve;

the support comprises a support body and a supporting block for supporting the support body, the support body is formed by arranging a plurality of layers of steel plates and a plurality of layers of rubber in a staggered mode, the outline shape of the outer edge of the support body is the same as that of the steel pipe, a second protective sleeve is sleeved outside the support body, and a second asbestos plate is filled in an interlayer between the second protective sleeve and the support body;

the supporting block is provided with a clamping groove, and the bottom of the second protective sleeve is inserted into the clamping groove and connected with the supporting block.

In the above technical scheme, first protective sheath and second protective sheath are preferably integrative structure, first asbestos board and second asbestos board are preferably integrative structure.

Further, the upper and lower both ends of steel pipe set up a plurality of staple along outer wall circumference equidistance, the upper and lower both ends of first protection cover set up a plurality of staples along inner wall circumference equidistance, staple on the steel pipe with staple on the first protection cover is crisscross the setting from top to bottom.

Further preferably, the length of the fixing nail is less than half of the thickness of an interlayer between the steel pipe and the first protection sleeve.

In the technical scheme, an upper connecting steel plate is embedded at the bottom of a concrete layer in the inner cavity of the steel pipe, an upper reinforcing steel plate is arranged at the upper part of the support body, and the upper connecting steel plate is connected with the upper reinforcing steel plate through a high-strength bolt.

The upper portion in the supporting block is pre-buried has lower connecting steel plate, the lower part of support body is equipped with lower floor's reinforcing steel plate, lower connecting steel plate passes through high strength bolt and is connected with lower floor's reinforcing steel plate.

In addition, protective coating layers are arranged on the outer surfaces of the first protective sleeve and the second protective sleeve, and the steel pipe concrete column body, the cushion stone and the support body are combined into a whole through high-cohesiveness epoxy resin mortar; the cross section shapes of the steel pipe, the first protective sleeve, the second protective sleeve and the support body are corresponding and are all one of a circle, a rectangle, an ellipse, a polygon or a curved edge.

On the other hand, the invention also provides a manufacturing process of the steel pipe concrete structure with the functions of fire prevention, collision prevention and shock resistance, which comprises the following steps:

step 1, preparing a steel pipe required by construction according to the size required by design, and embedding a connecting steel plate at the bottom in the steel pipe;

step 2, pouring concrete into the inner cavity of the steel pipe to form a concrete layer;

step 3, after the concrete in the step 2 is cured to generate certain strength, arranging a plurality of fixing nails on the outer walls of the upper end and the lower end of the steel pipe at equal intervals along the circumferential direction;

step 4, after the concrete in the step 2 is completely cured, mounting the support at the bottom of the support;

step 5, wrapping a circle of asbestos plate on the periphery of the steel pipe and the support body;

and 6, finally, sleeving a protective sleeve downwards from the top end of the steel pipe, and inserting the bottom of the protective sleeve into the clamping groove of the support to complete the manufacture of the steel pipe concrete structure.

Compared with the prior art, the invention has the following advantages:

1. the steel pipe protective sleeve is arranged around the steel pipe on the basis of the prior art, has a fireproof effect, can prevent flame from directly ablating the internal steel pipe concrete structure after a fire disaster occurs, avoids the cracking and the structural instability of the concrete caused by the over-quick temperature rise of the internal structure, and improves the bearing capacity and the stability of the main body of the steel pipe concrete structure;

2. the asbestos plate is filled in the interlayer between the steel pipe and the protective sleeve, has good fireproof and heat insulation effects, and can generate obvious plastic deformation under the impact action to absorb impact energy, so that the problem of local deformation generated when the existing steel pipe concrete structure encounters lateral impact is solved, and the energy consumption capability of the steel pipe concrete column is enhanced;

3. the high-damping shock-insulation rubber support is arranged at the bottom of the steel pipe concrete structure main body, so that the vertical bearing capacity, the horizontal restoring force and the damping (energy absorption) borne by the steel pipe concrete structure are integrated, the hysteresis characteristic (load-deformation curve) of the support is full, and the energy consumption is obvious;

4. according to the invention, the second protective sleeve is arranged outside the high-damping shock-insulation rubber support, so that the internal rubber is well protected from being influenced by ozone and ultraviolet rays, and the rubber support has better aging resistance; meanwhile, the interlayer between the second protective sleeve and the support body is filled with the asbestos plate, and under the combined action, the column has better recovery and energy consumption capabilities when the column is impacted, subjected to geological disasters and the like;

5. the invention has simple processing, stable structure and wide application range, and is suitable for building anti-collision structures of important public places such as underground parking lots, bridges, viaduct piers and the like;

6. the steel pipe concrete structure body and the support are prefabricated in a factory, the processing technology is simple, the standardization degree is high, and the cost is low;

7. the invention fills the domestic gap of measures about the fireproof, anti-collision, shockproof and energy-absorbing capabilities of the steel pipe concrete structure, and provides a more advanced practical protection measure.

Drawings

FIG. 1 is a schematic view showing the overall structure of a steel pipe concrete structure according to the present invention;

FIG. 2 is a top view of the concrete filled steel tube structural body of FIG. 1;

FIG. 3 is a schematic structural view of the support of FIG. 1;

FIG. 4 is a flow chart of the manufacturing process of the steel pipe concrete structure of the present invention.

Shown in the figure:

the concrete-reinforced concrete composite slab comprises, by weight, 1-a steel pipe, 2-a first protective sleeve, 3-a concrete layer, 4-a first asbestos board, 5-a supporting block, 6-a steel plate, 7-rubber, 8-a second protective sleeve, 9-a second asbestos board, 10-a clamping groove, 11-a fixing nail, 12-an upper connecting steel plate, 13-an upper reinforcing steel plate, 14-a high-strength bolt, 15-a lower connecting steel plate and 16-a lower reinforcing steel plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a steel pipe concrete structure with fireproof, anti-collision and shockproof functions, which comprises a steel pipe concrete structure main body and a support seat arranged at the bottom thereof, wherein:

the steel pipe concrete structure main body comprises a steel pipe 1 and a first protective sleeve 2 sleeved outside the steel pipe 1, a concrete layer 3 is filled in an inner cavity of the steel pipe 1, and a first asbestos plate 4 is filled in an interlayer between the steel pipe 1 and the first protective sleeve 2;

the support comprises a support body and a supporting block 5 for supporting the support body, the support body is formed by arranging a plurality of layers of steel plates 6 and a plurality of layers of rubber 7 in a staggered mode, the outline shape of the outer edge of the support body is the same as that of the steel pipe 1, a second protective sleeve 8 is sleeved outside the support body, and a second asbestos plate 9 is filled in an interlayer between the second protective sleeve 8 and the support body;

a clamping groove 10 is formed in the supporting block 5, and the bottom of the second protective sleeve 8 is inserted into the clamping groove 10 and connected with the supporting block 5.

In the above embodiment, the first protective sheath 2 and the second protective sheath 8 are of an integral structure, and the first asbestos plate 4 and the second asbestos plate 9 are of an integral structure.

Above-mentioned embodiment is when specifically implementing, and is preferred, outer wall circumference equidistance is followed at the upper and lower both ends of steel pipe 1 sets up a plurality of staple 11, inner wall circumference equidistance is followed at the upper and lower both ends of first protection cover 2 and sets up a plurality of staple 11, staple 11 on the steel pipe 1 with staple 11 on the first protection cover 2 is crisscross the setting from top to bottom.

Further preferably, the length of the fixing nail 11 is less than half of the thickness of the interlayer between the steel pipe 1 and the first protection sleeve 2.

In the above embodiment, the connection between the steel pipe 1 and the support body is as follows: an upper connecting steel plate 12 is embedded at the bottom of the concrete layer 3 in the inner cavity of the steel pipe 1, an upper reinforcing steel plate 13 is arranged at the upper part of the support body, and the upper connecting steel plate 12 is connected with the upper reinforcing steel plate 13 through a high-strength bolt 14.

In the above embodiments, the connection between the support body and the support block 5 is: the upper portion in the supporting shoe 5 is pre-buried has lower connecting steel plate 15, the lower part of support body is equipped with lower floor's reinforcing steel plate 16, lower connecting steel plate 15 is connected with lower floor's reinforcing steel plate 16 through high strength bolt 14.

In addition, the outer surfaces of the first protective sleeve 2 and the second protective sleeve 8 are both provided with protective coating layers; the steel pipe concrete column body, the cushion stone and the support body are combined into a whole through high-cohesiveness epoxy resin mortar.

The cross section shapes of the steel pipe 1, the first protective sleeve 2, the second protective sleeve 8 and the support body are corresponding and are all one of circular, rectangular, oval, polygonal or curved edges.

Meanwhile, as shown in fig. 4, the invention provides a manufacturing process of a steel pipe concrete structure with fireproof, anti-collision and shockproof functions, which comprises the following specific steps:

step 1, preparing a steel pipe 1 required by construction according to the size required by design, and embedding a connecting steel plate 12 at the bottom in the steel pipe 1;

step 2, pouring concrete into the inner cavity of the steel pipe 1 to form a concrete layer 3, wherein the concrete entity poured is designed according to the actual load requirement, but not limited to conventional concrete, and can be formed by pouring high-performance concrete by adding fibers or an admixture;

step 3, after the concrete in the step 2 is cured to generate certain strength, arranging 6 fixing nails 11 on the outer walls of the upper end and the lower end of the steel pipe 1 at equal intervals along the circumferential direction;

step 4, after the concrete in the step 2 is completely cured, mounting the support at the bottom of the support;

further, the support and the steel pipe 1 are installed by connecting an upper reinforcing steel plate 13 arranged at the middle upper part of the support body with an upper connecting steel plate 12 pre-embedded at the bottom of the steel pipe 1 through a high-strength bolt 14;

step 5, wrapping a circle of asbestos plate on the periphery of the steel pipe 1 and the support body;

and step 6, finally, sleeving a protective sleeve downwards from the top end of the steel pipe 1, and inserting the bottom of the protective sleeve into the clamping groove 10 of the support to complete the manufacture of the steel pipe concrete structure.

In the embodiment, the first protective sleeve 2 is arranged outside the steel pipe 1 to play a fireproof role, so that the phenomenon that the inner steel pipe concrete structure is directly ablated by flame to cause the too fast temperature rise of the inner structure to cause concrete cracking and structural instability is avoided, and meanwhile, the bearing capacity and the stability of the steel pipe concrete structure are improved; meanwhile, the outer walls of the first protective sleeve 2 and the second protective sleeve 8 are coated with protective coatings, and the protective coatings have the performances of corrosion resistance, wear resistance, high temperature resistance, impact resistance and the like; the steel pipe 1 and the first protective sleeve 2, and the interlayer between the support body and the first protective sleeve 8 are filled with the asbestos board 6, the asbestos board has a good fireproof and heat insulation effect, and can generate obvious plastic deformation under the impact effect to absorb impact energy, so that the problem of local deformation of the existing steel pipe concrete column when encountering lateral impact is solved, and the energy consumption capability of the steel pipe concrete column is enhanced.

In the embodiment, the support is a high-damping shock-insulation rubber support, the support integrates the vertical bearing capacity, the horizontal restoring force and the damping (energy absorption) borne by the steel pipe concrete structure main body, and the support is full in hysteresis characteristic (load-deformation curve) and remarkable in energy consumption.

In the above embodiment, the steel pipe concrete structure main body, the supporting block 5 and the support body are combined into a whole by high-cohesiveness epoxy resin mortar; the high-cohesiveness epoxy resin mortar has good cohesiveness, and can firmly adhere the steel pipe concrete structure main body, the supporting block 5 and the support seat main body together; the hardened steel has strong compressive strength and certain elasticity, and is not easy to damage after being pressed. The high-cohesiveness epoxy resin mortar has the characteristics of low cost, convenient construction and quick condensation.

In the above embodiment, the second protective sleeve 8 well protects the inner rubber from ozone and ultraviolet rays, so that the rubber support of the second protective sleeve has better aging resistance; meanwhile, the interlayer between the second protective sleeve and the support body is filled with the asbestos plate, and under the combined action, the column has better recovery and energy consumption capabilities when the column receives the conditions of impact, geological disasters and the like.

In conclusion, the steel pipe concrete structure with the functions of fire prevention, collision prevention and shock resistance and the manufacturing process thereof fill the domestic gap of measures for the capabilities of fire prevention, collision prevention, shock prevention and energy absorption of the steel pipe concrete column structure, provide a more advanced practical protection measure, and are suitable for building anti-collision structures in underground parking lots, bridges, overhead piers and other important public places.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.