CN112031158A - Precast concrete building structure with shock-absorbing characteristic - Google Patents
Precast concrete building structure with shock-absorbing characteristic Download PDFInfo
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- CN112031158A CN112031158A CN202010912407.7A CN202010912407A CN112031158A CN 112031158 A CN112031158 A CN 112031158A CN 202010912407 A CN202010912407 A CN 202010912407A CN 112031158 A CN112031158 A CN 112031158A
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 210
- 239000004567 concrete Substances 0.000 claims abstract description 72
- 229920001971 elastomer Polymers 0.000 claims abstract description 27
- 238000009415 formwork Methods 0.000 claims abstract description 16
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 14
- 230000035939 shock Effects 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 92
- 239000010959 steel Substances 0.000 claims description 92
- 239000002245 particle Substances 0.000 claims description 22
- 239000004576 sand Substances 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 239000004568 cement Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920006311 Urethane elastomer Polymers 0.000 claims 2
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
- E04B1/483—Shear dowels to be embedded in concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a precast concrete building structure with shock absorption property, which comprises a plurality of precast concrete columns and a plurality of precast concrete beams, wherein the precast concrete columns and the precast concrete beams are connected at intervals to form a frame-type precast concrete building structure, the precast concrete beams are connected with the precast concrete columns through bearing columns, the precast concrete beams are provided with bearing column grooves matched with the bearing columns, rubber pads are arranged in the bearing column grooves, polyurethane rubber is poured between the bearing columns on the bearing columns and the precast concrete beams, in an earthquake, the polyurethane rubber absorbs energy and absorbs shock, the shock absorption degree of the precast concrete beams is reduced, the damage possibility of the precast concrete beams is reduced, the precast concrete beams are composed of a formwork and a concrete casting body, the formwork comprises a casing and a connecting column, the casing surrounds the concrete casting body, and no cracked concrete block falls off even if the concrete casting body is cracked due to overlarge shock degree, the safety of people and objects in the building is protected.
Description
Technical Field
The invention relates to the technical field of fabricated building structures, in particular to a precast concrete building structure with a damping characteristic.
Background
The precast concrete is a concrete product which is prefabricated and molded in a factory and then transported to a construction site for assembly, in recent years, the precast concrete becomes a new favorite in the construction industry with low cost and excellent performance, and the precast concrete has a wide range of styles, smaller weight, excellent flexural strength and performance, so that the precast concrete is widely applied to the fields of roadblocks, water storage pools, outer walls, buildings and decoration.
Modern building structures are mainly based on strong columns and weak beams, the strong columns and the weak beams are a structural concept provided from the design angle that the structure is damaged in vibration, namely, the columns are not damaged before the beams, because the beam damage belongs to local component damage, the column damage endangers the safety of the whole structure, the whole building can be collapsed, the consequence is serious, the strong columns and the weak beams are required to ensure that the columns are relatively safe, the conventional beams can be broken or fractured when yielding, and people and objects in the building are damaged before the building is collapsed.
Disclosure of Invention
In order to solve the problems that the beam is cracked or broken when yielding and breaking and people and objects in the building are damaged before the building collapses, the invention provides a precast concrete building structure with a shock absorption characteristic, aiming at improving the shock absorption performance of the building structure in the assembly of the precast concrete building structure and improving the beam structure so that the beam structure does not damage people and objects below in the yielding process.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the precast concrete building structure with the shock absorption characteristic comprises a plurality of precast concrete columns and a plurality of precast concrete beams, wherein the precast concrete columns and the precast concrete beams are connected to form a frame type precast concrete building structure, the vertical side surfaces of the precast concrete columns, which are connected with the precast concrete beams, are provided with bearing columns, the bearing columns are cuboid columns, which horizontally extend out of the vertical side surfaces of the precast concrete columns, the centers of the upper surfaces of the bearing columns are provided with vertically upward positioning columns, the lower ends of the positioning columns extend into the bearing columns, the upper ends of the positioning columns are upwards positioned above the bearing columns, the vertical outer end surface of each bearing column is vertically provided with first steel wire holes, which horizontally penetrate through the bearing columns and the precast concrete columns, each bearing column is provided with more than two first steel wire holes, and the more than two first steel wire holes, which penetrate through the opposite side surfaces of the precast concrete columns and the bearing columns on the opposite side surfaces of the precast concrete columns, are arranged on the same horizontal line, the first steel wire holes penetrating through two adjacent side surfaces of the precast concrete column and the bearing columns on the two adjacent side surfaces of the precast concrete column are distributed in a vertically staggered state, the vertical side surface of the precast concrete column above each bearing column is provided with more than two second steel wire holes vertically penetrating through the precast concrete column, the more than two second steel wire holes penetrating through the opposite side surfaces of the precast concrete column are arranged on the same horizontal line, and the second steel wire holes of the two adjacent side surfaces of the precast concrete column are distributed in a vertically staggered state;
the precast concrete beam is connected with the precast concrete column through a bearing column and a positioning column on the bearing column, the precast concrete beam is composed of a formwork and a concrete pouring body, the formwork comprises a shell and a connecting column, the shell is a hollow cuboid which is made of glass fiber reinforced plastics and is provided with an upper end opening, the height of the shell is larger than that of the bearing column, bearing column grooves matched with the bearing column are arranged on the lower portions of the two ends of the shell, the bearing column grooves are rectangular groove bodies which are concave inwards and have downward openings, each bearing column groove penetrates through the end face of the shell outwards, a through hole is formed in the center of the top face of each bearing column groove, the diameter of each through hole is larger than that of the positioning column, steel wire pipes are communicated between the two bearing column grooves at the two ends of the precast concrete beam, the number of the steel wire pipes is consistent with the number of first steel wire holes, and when the precast concrete beam is connected with the precast concrete column, the two ends of each steel wire The first steel wire holes are opposite, the first steel wire rope penetrates through the first steel wire holes and the steel wire pipes on the same horizontal straight line to connect the precast concrete columns and the precast concrete beams in series, two ends of the first steel wire rope are anchored on the vertical side surface of the precast concrete column at the outermost side, which is opposite to the precast concrete beams, a row of connecting columns are arranged among the steel wire pipes, between the steel wire pipes and the inner wall of the shell, each row of connecting columns are studs arranged at intervals along the length direction of the shell, the lower end of each stud is fixedly connected with the inner bottom surface of the shell, the upper end of each stud extends out of the shell and is positioned above the shell, at least one nut is screwed on each stud, each nut is a circular platform body with a large upper part and a small lower part, an internal thread hole penetrating through the nut is formed in the center of the nut, the internal thread concrete hole is matched with the connecting columns, the concrete pouring body is provided with a through hole at the position corresponding to the through hole on the top surface of the bearing column groove, the diameter of the through hole is consistent with that of the through hole, when the precast concrete beam is connected with the precast concrete column, the through hole is sleeved outside the positioning column extending out of the through hole, the top of the positioning column is lower than that of the through hole, polyurethane rubber is poured in the through hole between the through hole and the positioning column and above the positioning column, the upper end of the polyurethane rubber poured in the through hole is flush with the upper end of the concrete pouring body, a second steel wire rope passes through a second steel wire hole on the same horizontal straight line to connect the precast concrete columns in series, two ends of the second steel wire rope are anchored on the vertical side surface of the precast concrete column at the outermost side, which is back to the precast concrete beam, a sleeve is sleeved outside the second steel wire rope between two adjacent, and a cast-in-place concrete layer is poured above the precast concrete beam and surrounds the sleeve outside the second steel wire rope.
Furthermore, when the precast concrete beam is connected with the precast concrete column, a space is formed between the end face of the precast concrete beam and the side face of the corresponding precast concrete column.
Furthermore, the distance between the end face of the precast concrete beam and the corresponding side face of the precast concrete column is 5-20mm, and polyurethane rubber is filled in the distance between the end face of the precast concrete beam and the corresponding side face of the precast concrete column.
Furthermore, the cast-in-place concrete layer is cast by adopting rubber particle cement concrete, the rubber particle cement concrete is prepared by replacing a part of sand grains in concrete with rubber particles with the same specification as the sand grains, and the replaced rubber particles of the sand grains account for 10% -17% of the total mass of the sand grains.
Furthermore, 20-25% of natural rubber particles in volume portion are uniformly distributed in the polyurethane rubber, and the particle size of the rubber particles is 0.5-1 mm.
Further, when the precast concrete beam is connected with the precast concrete column, the first steel wire rope is in a tensioned state, and the second steel wire rope is in a relaxed state.
Furthermore, each stud is provided with at least one nut in a screwed mode, when one nut is arranged on each stud in a screwed mode, the nut is located at the upper end of each stud and is higher than the concrete pouring body, when more than two nuts are arranged on each stud in a screwed mode, at least one nut is located at the upper end of each stud, the nut at the upper end of each stud is higher than the concrete pouring body, and at least one nut is located inside the concrete pouring body.
Further, the spliced pole is with the material with the casing, and the spliced pole includes first cylinder and second cylinder, first cylinder has the cylinder of external screw thread for the periphery wall, and bottom, top and casing upper shed are flat mutually in the first cylinder bottom fixed connection casing, are provided with one heart on the first cylinder top surface and have the internal screw thread counter bore, the second cylinder has the cylinder of external screw thread for the periphery wall, second cylinder lower extreme is provided with the connector that matches with the counter bore of first cylinder, and second cylinder top surface is provided with the rectangle knob, when the second cylinder is connected with first cylinder, the external screw thread of second cylinder and the external screw thread connection of first cylinder form along the integrative external screw thread of spliced pole direction of height.
Furthermore, the projection of the knob on the top surface of the second column body is positioned inside the circular ring where the small diameter of the external thread of the second column body is positioned.
Furthermore, the length, width and height of the bearing column groove are all larger than those of the bearing column, a rubber layer is attached to the inner surface of the bearing column groove, and the inner surface of the rubber layer is matched with the bearing column.
Through the technical scheme, the invention has the beneficial effects that:
the precast concrete beam and the precast concrete column are connected by adopting a bearing column structure, a bearing column groove matched with the bearing column is arranged on the precast concrete beam, a rubber pad is arranged in the bearing column groove, and polyurethane rubber is poured between the positioning column on the bearing column and the precast concrete beam.
The precast concrete beam comprises the formwork and the concrete casting body, wherein the formwork comprises the shell and the connecting column, the shell surrounds the concrete casting body, and even if the concrete casting body is cracked due to overlarge vibration degree, cracked concrete blocks cannot fall off, so that the safety of people and objects in a building is protected.
The formwork comprises a shell and a connecting column, wherein the connecting column is positioned in a concrete pouring body and a cast-in-place concrete layer, and the connection between the concrete pouring body and the cast-in-place concrete layer is strengthened.
When the precast concrete beam is connected with the precast concrete column, the first steel wire rope in the first steel wire hole is in a tensioned state, the second steel wire rope in the second steel wire hole is in a loose state, the first steel wire rope reinforces the connection of the beam column, and the second steel wire rope can pull the precast concrete beam through the cast-in-place concrete layer when the precast concrete beam is damaged, so that the precast concrete beam is prevented from collapsing, the safety of people and objects in a building is protected, and the damage and the loss caused by an earthquake are reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view illustrating the coupling of a precast concrete beam with a precast concrete column according to the present invention;
FIG. 3 is a schematic view of the precast concrete column structure of the present invention;
fig. 4 is a schematic view of a precast concrete beam structure of the present invention;
fig. 5 is a left side view of the precast concrete beam of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
FIG. 7 is a schematic view of a formwork arrangement of the present invention;
FIG. 8 is a schematic view of the connecting column structure of the present invention;
fig. 9 is a cross-sectional view of the connecting column of the present invention.
The reference numbers in the drawings are as follows: the concrete column is 1, the precast concrete beam is 2, the cast-in-place concrete layer is 3, the bearing column is 11, the second steel wire hole is 12, the formwork is 21, the concrete casting body is 22, the sleeve pipe is 31, the positioning column is 111, the first steel wire hole is 112, the shell is 211, the connecting column is 212, the first column body is 212a, the second column body is 212b, the steel wire pipe is 213, the nut is 214, the through hole is 221, the bearing column groove is 2111, the through hole is 2112, the rubber layer is 2113, the first steel wire rope is 2131a, and the second steel wire rope is 2131 b.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
it should be noted that directional terms used in the following description such as "front", "back", "left", "right", "up", "down", "bottom" and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 9, a precast concrete building structure with shock absorption characteristics includes a plurality of precast concrete columns 1 and a plurality of precast concrete beams 2, the plurality of precast concrete columns 1 and the plurality of precast concrete beams 2 are connected to form a frame-type precast concrete building structure, a bearing column 11 is disposed on a vertical side surface of the precast concrete columns 1 connected to the precast concrete beams 2, the bearing column 11 is a rectangular column horizontally extending from the vertical side surface of the precast concrete column 1, a positioning column 111 is vertically disposed at a center of an upper surface of the bearing column 11, a lower end of the positioning column 111 extends into the bearing column 11, an upper end of the positioning column is upwardly disposed above the bearing column 11, a first steel wire hole 112 horizontally penetrating through the bearing column 11 and the precast concrete column 1 is vertically disposed on an outer vertical end surface of each bearing column 11, two or more first steel wire holes 112 are disposed on each bearing column 11, more than two first steel wire holes 112 penetrating through the bearing columns 11 on the opposite side surfaces of the precast concrete column 1 and the opposite side surfaces of the precast concrete column 1 are arranged on the same horizontal line, the first steel wire holes 112 penetrating through the bearing columns 11 on the two adjacent side surfaces of the precast concrete column 1 and the two adjacent side surfaces of the precast concrete column 1 are distributed in a vertically staggered state, second steel wire holes 12 vertically penetrating through the precast concrete column 1 are arranged on the vertical side surface of the precast concrete column 1 above each bearing column 11, the number of the second steel wire holes 12 above each bearing column 11 is more than two, more than two second steel wire holes 12 penetrating through the opposite side surfaces of the precast concrete column 1 are arranged on the same horizontal line, and the second steel wire holes 12 on the two adjacent side surfaces of the precast concrete column 1 are distributed in a vertically staggered state;
the precast concrete beam 2 is connected with the precast concrete column 1 through a bearing column 11 and a positioning column 111 on the bearing column 11, the precast concrete beam 2 is composed of a formwork 21 and a concrete casting body 22, the formwork 21 comprises a shell 211 and a connecting column 212, the shell 211 is a hollow cuboid with an upper end opening made of glass fiber reinforced plastics, the height of the shell 211 is larger than that of the bearing column 11, bearing column grooves 2111 matched with the bearing column 11 are arranged at the lower parts of two ends of the shell 211, the bearing column grooves 2111 are rectangular groove bodies with inward concave and downward openings, each bearing column groove 2111 outwards penetrates through the end surface of the shell 211, a through hole 2112 is arranged at the center of the top surface of each bearing column groove 2111, the diameter of each through hole 2112 is larger than that of the positioning column 111, steel wire pipes 213 are communicated between the two bearing column grooves 2111 at two ends of the precast concrete beam 2, and the number of the steel wire pipes 213 is consistent with that of the first steel, when the precast concrete beam 2 is connected with the precast concrete column 1, two ends of each steel wire pipe 213 are respectively opposite to first steel wire holes 112 on bearing columns 11 of two precast concrete columns 1 at two ends of the precast concrete beam 2, a first steel wire rope 2131a penetrates through the first steel wire holes 112 and the steel wire pipes 213 on the same horizontal straight line to connect the precast concrete column 1 and the precast concrete beam 2 in series, two ends of the first steel wire rope 2131a are anchored on the vertical side surface of the outermost precast concrete column 1 back to the precast concrete beam 2, a row of connecting columns 212 are respectively arranged between the steel wire pipes 213 and the inner wall of the shell 211, each row of connecting columns 212 are studs arranged at intervals along the length direction of the shell 211, the lower end of each stud is fixedly connected with the inner bottom surface of the shell 211, the upper end of each stud extends out of the shell 211 and is positioned above the shell 211, and each stud is provided with at least one, each nut 214 is a truncated cone with a large upper part and a small lower part, the center of the nut 214 is provided with an internal thread hole which vertically penetrates through the nut 214 and is matched with the connecting column 212, the concrete casting 22 is cast in the shell 211, the top surface of the concrete casting 22 is flush with the top surface of the shell 211, the concrete casting 22 is provided with a through hole 221 at the through hole 2112 corresponding to the top surface of the bearing column slot 2111, the diameter of the through hole 221 is consistent with that of the through hole 2112, when the precast concrete beam 2 is connected with the precast concrete column 1, the through hole 221 is sleeved outside the positioning column 111 extending out of the through hole 2112, the top of the positioning column 111 is lower than the top of the through hole 221, polyurethane rubber is cast between the through hole 221 and the positioning column 111 and in the through hole 221 above the positioning column 111, and the upper end of the polyurethane rubber cast in, the second steel wire rope 2131b penetrates through a second steel wire hole 12 in the same horizontal straight line to serially connect the precast concrete columns 1, two ends of the second steel wire rope 2131b are anchored on the vertical side surface, opposite to the precast concrete beam 2, of the precast concrete column 1 on the outermost side, a sleeve 31 is sleeved outside the second steel wire rope 2131b between every two adjacent precast concrete columns 1, the sleeve 31 is placed on the precast concrete beam 2 between every two adjacent precast concrete columns 1, a cast-in-place concrete layer 3 is poured above the precast concrete beam 2, and the sleeve 31 outside the second steel wire rope 2131b is surrounded by the cast-in-place concrete layer 3.
When the precast concrete beam 2 is connected with the precast concrete column 1, a space is reserved between the end face of the precast concrete beam 2 and the side face of the corresponding precast concrete column 1.
The distance between the end surface of the precast concrete beam 2 and the corresponding side surface of the precast concrete column 1 is 5-20mm, and polyurethane rubber is filled in the distance between the end surface of the precast concrete beam 2 and the corresponding side surface of the precast concrete column 1.
The cast-in-place concrete layer 3 is cast by adopting rubber particle cement concrete, the rubber particle cement concrete is prepared by using rubber particles with the same specification as sand grains to replace a part of sand grains in concrete, wherein the rubber particles replacing the sand grains account for 10% -17% of the total mass of the sand grains, for example, 350kg of cement, 190kg of water, 700kg of sand grains and 1150kg of stones are used in C20 cast-in-place concrete prepared by 1m, and 70-119kg of rubber particles with the same specification as the sand grains in the original formula can be selected to replace 70-119kg of sand grains when the rubber particles are used to replace the sand grains in the concrete.
20-25% of natural rubber particles are uniformly distributed in the polyurethane rubber, and the particle size of the rubber particles is 0.5-1 mm.
When the precast concrete beam 2 is connected with the precast concrete column 1, the first steel wire rope 2131a is in a tensioned state, and the second steel wire rope 2131b is in a relaxed state.
Each stud is provided with at least one nut 214 in a screwed mode, when one nut 214 is screwed on each stud, the nut 214 is located at the upper end of each stud, the nut 214 is higher than the concrete pouring body 22, when more than two nuts 214 are screwed on each stud, at least one nut 214 is located at the upper end of each stud, the nut 214 at the upper end of each stud is higher than the concrete pouring body 22, and at least one nut 214 is located inside the concrete pouring body 22.
The connecting column 212 and the shell 211 are made of the same material, the connecting column 212 comprises a first column body 212a and a second column body 212b, the first column body 212a is a cylinder with an outer peripheral wall provided with an external thread, the bottom surface and the top end of the first column body 212a are fixedly connected with the upper opening of the shell 211, a counter bore with an internal thread is concentrically arranged on the top surface of the first column body 212a, the second column body 212b is a cylinder with an outer peripheral wall provided with an external thread, the lower end of the second column body 212b is provided with a connecting body matched with the counter bore of the first column body 212a, the top surface of the second column body 212b is provided with a rectangular knob, when the second column body 212b is connected with the first column body 212a, the external thread of the second column body 212b is connected with the external thread of the first column body 212a to form an integral external thread along, and removing the second column 212b, stacking the precast concrete beams 2 with the second column 212b removed to reduce the arrangement interval, so that the precast concrete beams 2 are arranged closely, the shaking in the transportation process is reduced, more precast concrete beams 2 can be transported at one time while the transportation safety is ensured, the second column 212b can be transported and delivered together with the precast concrete beams 2 with the second column 212b removed, and after the precast concrete beams 2 and the precast concrete columns 1 are connected and before the cast-in-place concrete layer 3 is made, the second columns 212b are connected to the top ends of the first columns 212a one by one.
The projection of the knob on the top surface of the second cylinder 212b is positioned inside the circular ring where the small diameter of the external thread of the second cylinder 212b is positioned.
The length, width and height of the bearing column slot 2111 are all larger than those of the bearing column 11, a rubber layer 2113 is attached to the inner surface of the bearing column slot 2111, and the inner surface of the rubber layer 2113 is matched with the bearing column 11.
The polyurethane rubber is a JH-036 type casting polyurethane prepolymer sold by polymer rubber products Co.Ltd of Dongguan city.
The precast concrete beam 2, the precast concrete column 1, the concrete pouring body 22 and the cast-in-place concrete layer 3 are all internally provided with a steel reinforcement cage.
The precast concrete beam 2 and the precast concrete column 1 are connected by adopting a bearing column 11 structure, a bearing column groove 2111 matched with the bearing column 11 is arranged on the precast concrete beam 2, a rubber pad is arranged in the bearing column groove 2111, and polyurethane rubber is poured between the positioning column 111 on the bearing column 11 and the precast concrete beam 2, so that in an earthquake, the polyurethane rubber absorbs energy and damps, the earthquake degree of the precast concrete beam 2 is reduced, the damping performance of a building structure is improved, and the damage possibility of the precast concrete beam 2 is reduced.
The precast concrete girder 2 of the present invention is composed of a formwork 21 and a concrete cast 22, the formwork 21 includes a shell 211 and a connection column 212, the shell 211 surrounds the concrete cast 22, and even if the concrete cast 22 is cracked due to excessive vibration, cracked concrete blocks do not fall off, thereby protecting the safety of people and things in a building.
The formwork 21 of the present invention includes a housing 211 and a connection column 212, the connection column 212 being positioned in the concrete cast-in-place concrete layer 3 and the concrete cast-in-place concrete 22 to reinforce the connection of the concrete cast-in-place concrete layer 3 and the concrete cast-in-place concrete layer 22.
When the precast concrete beam 2 is connected with the precast concrete column 1, the first steel wire rope 2131a in the first steel wire hole 112 is in a tensioned state, the second steel wire rope 2131b in the second steel wire hole 12 is in a relaxed state, the first steel wire rope 2131a reinforces the connection of the beam column, and the second steel wire rope 2131b can pull the precast concrete beam 2 through the cast-in-place concrete layer 3 when the precast concrete beam 2 is damaged, so that the precast concrete beam 2 is prevented from collapsing, the safety of people and objects in a building is protected, and the damage and the loss caused by an earthquake are reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of disclosure without departing from the spirit of the present invention.
Claims (10)
1. The precast concrete building structure with the shock absorption characteristic comprises a plurality of precast concrete columns (1) and a plurality of precast concrete beams (2), wherein the precast concrete columns (1) and the precast concrete beams (2) are connected to form a frame-type precast concrete building structure, the frame-type precast concrete building structure is characterized in that a bearing column (11) is arranged on the vertical side surface of the precast concrete column (1) connected with the precast concrete beams (2), the bearing column (11) is a cuboid-shaped column body horizontally extending out of the vertical side surface of the precast concrete column (1), a positioning column (111) which is vertically upward is arranged at the center of the upper surface of the bearing column (11), the lower end of the positioning column (111) extends into the bearing column (11), the upper end of the positioning column is upwards positioned above the bearing column (11), and a first steel wire hole (112) which horizontally penetrates through the bearing column (11) and the precast concrete column (1) is vertically arranged on the vertical outer end surface of each bearing column (11), more than two first steel wire holes (112) are formed in each bearing column (11), more than two first steel wire holes (112) penetrating through the bearing columns (11) on the opposite side surfaces of the precast concrete column (1) and the opposite side surfaces of the precast concrete column (1) are arranged on the same horizontal line, the first steel wire holes (112) penetrating through the bearing columns (11) on the two adjacent side surfaces of the precast concrete column (1) and the two adjacent side surfaces of the precast concrete column (1) are distributed in a vertically staggered state, second steel wire holes (12) vertically penetrating through the precast concrete column (1) are formed in the vertical side surface of the precast concrete column (1) above each bearing column (11), more than two second steel wire holes (12) above each bearing column (11) are arranged on the same horizontal line, and the second steel wire holes (12) penetrating through the opposite side surfaces of the precast concrete column (1) are arranged on the same horizontal line, the second steel wire holes (12) of two adjacent side surfaces of the precast concrete column (1) are distributed in a vertically staggered state;
the precast concrete beam (2) is connected with the precast concrete column (1) through a bearing column (11) and a positioning column (111) on the bearing column (11), the precast concrete beam (2) is composed of a formwork (21) and a concrete pouring body (22), the formwork (21) comprises a shell (211) and a connecting column (212), the shell (211) is a hollow cuboid with an upper end opening made of glass fiber reinforced plastic, the height of the shell (211) is greater than that of the bearing column (11), bearing column grooves (2111) matched with the bearing column (11) are arranged on the lower portions of two ends of the shell (211), the bearing column grooves (2111) are rectangular groove bodies which are concave inwards and have downward openings, each bearing column groove (2111) outwards penetrates through the end face of the shell (211), a through hole (2112) is formed in the center of the top face of each bearing column groove (2111), and the diameter of each positioning column (2112) is greater than that of the corresponding bearing column (111), the two bearing column grooves (2111) at the two ends of the precast concrete beam (2) are communicated with steel wire pipes (213), the number of the steel wire pipes (213) is consistent with that of the first steel wire holes (112), when the precast concrete beam (2) is connected with the precast concrete column (1), the two ends of each steel wire pipe (213) are respectively opposite to the first steel wire holes (112) on the bearing columns (11) of the two precast concrete columns (1) at the two ends of the precast concrete beam (2), a first steel wire rope (2131 a) penetrates through the first steel wire holes (112) and the steel wire pipes (213) on the same horizontal straight line to connect the precast concrete column (1) and the precast concrete beam (2) in series, the two ends of the first steel wire rope (2131 a) are anchored on the vertical side face, back to the precast concrete beam (2), of the precast concrete column (1) at the outermost side, and steel wire pipes (213) are connected, A row of connecting columns (212) are arranged between the steel wire pipe (213) and the inner wall of the shell (211), each row of connecting columns (212) is provided with studs arranged along the length direction of the shell (211) at intervals, the lower end of each stud is fixedly connected with the inner bottom surface of the shell (211), the upper end of each stud extends out of the shell (211) and is positioned above the shell (211), at least one nut (214) is screwed on each stud, each nut (214) is a circular truncated cone with a large upper part and a small lower part, an internal threaded hole penetrating through the nut (214) up and down is formed in the center of the nut (214), the internal threaded hole is matched with the connecting column (212), the concrete casting (22) is cast inside the shell (211), the top surface of the concrete casting (22) is flush with the top surface of the shell (211), and a through hole (221) is formed in the position, corresponding to the top surface through hole (2112) of, the diameter of the through hole (221) is consistent with that of the through hole (2112), when the precast concrete beam (2) is connected with the precast concrete column (1), the through hole (221) is sleeved outside the positioning column (111) extending out of the through hole (2112), the top of the positioning column (111) is lower than that of the through hole (221), polyurethane rubber is poured between the through hole (221) and the positioning column (111) and in the through hole (221) above the positioning column (111), the upper end of the polyurethane rubber poured in the through hole (221) is flush with the upper end of the concrete pouring body (22), a second steel wire rope (2131 b) penetrates through a second steel wire hole (12) on the same horizontal straight line to connect the precast concrete columns (1) in series, two ends of the second steel wire rope (2131 b) are anchored on the vertical side face, back to the precast concrete beam (2), of the precast concrete column (1) on the outermost side, the outer portion of a second steel wire rope (2131 b) between every two adjacent precast concrete columns (1) is sleeved with a sleeve (31), the sleeve (31) is arranged on a precast concrete beam (2) between every two adjacent precast concrete columns (1), a cast-in-place concrete layer (3) is poured above the precast concrete beam (2), and the sleeve (31) outside the second steel wire rope (2131 b) is surrounded by the cast-in-place concrete layer (3).
2. The precast concrete structure having a shock-absorbing characteristic according to claim 1, wherein when the precast concrete beam (2) is coupled to the precast concrete column (1), there is a space between the end surface of the precast concrete beam (2) and the side surface of the corresponding precast concrete column (1).
3. The precast concrete structure having a shock-absorbing characteristic according to claim 2, wherein a distance between the end surface of the precast concrete beam (2) and the side surface of the corresponding precast concrete column (1) is 5-20mm, and a space between the end surface of the precast concrete beam (2) and the side surface of the corresponding precast concrete column (1) is filled with urethane rubber.
4. The precast concrete construction structure having shock-absorbing characteristics according to claim 1, wherein the cast-in-place concrete layer (3) is cast with rubber particle cement concrete made by replacing a part of sand grains in concrete with rubber particles in conformity with the size of the sand grains, wherein the rubber particles replaced with the sand grains account for 10 to 17% of the total mass of the sand grains.
5. The precast concrete structure with shock absorbing property according to claim 1, wherein 20 to 25% by volume of natural rubber particles are uniformly distributed in the urethane rubber, and the particle diameter of the rubber particles is 0.5 to 1 mm.
6. The precast concrete structure having shock-absorbing property according to claim 1, wherein the first wire rope (2131 a) is in a tensioned state and the second wire rope (2131 b) is in a relaxed state when the precast concrete beam (2) is connected to the precast concrete column (1).
7. The precast concrete construction structure having shock-absorbing property according to claim 1, wherein each of the studs is screwed with at least one nut (214), the nut (214) is positioned at an upper end of the stud when one nut (214) is screwed with the stud, the nut (214) is higher than the concrete cast-up body (22), at least one nut (214) is positioned at an upper end of the stud when more than two nuts (214) are screwed with the stud, the nut (214) at an upper end of the stud is higher than the concrete cast-up body (22), and at least one nut (214) is positioned inside the concrete cast-up body (22).
8. The precast concrete building structure with shock absorption characteristic according to claim 1, wherein the connection column (212) is made of the same material as the shell (211), the connection column (212) comprises a first cylinder (212 a) and a second cylinder (212 b), the first cylinder (212 a) is a cylinder with an outer circumferential wall having an external thread, the bottom end of the first cylinder (212 a) is fixedly connected with the inner bottom surface of the shell (211), the top end of the first cylinder (212 a) is parallel to the upper opening of the shell (211), a counter bore with an internal thread is concentrically arranged on the top surface of the first cylinder (212 a), the second cylinder (212 b) is a cylinder with an outer circumferential wall having an external thread, a connector corresponding to the counter bore of the first cylinder (212 a) is arranged at the lower end of the second cylinder (212 b), a rectangular knob is arranged on the top surface of the second cylinder (212 b), and when the second cylinder (212 b) is connected with the first cylinder (212 a), the external thread of the second cylinder (212 b) is connected with the external thread of the first cylinder (212 a) to form an integral external thread along the height direction of the connecting column (212).
9. The precast concrete building structure with shock-absorbing property according to claim 8, wherein the projection of the knob on the top surface of the second column (212 b) is located inside the circular ring where the externally threaded minor diameter of the second column (212 b) is located.
10. The precast concrete structure with shock-absorbing property according to claim 1, wherein the load-bearing column groove (2111) has a length, a width and a height which are all larger than those of the load-bearing column (11), the inner surface of the load-bearing column groove (2111) is adhered with a rubber layer (2113), and the inner surface of the rubber layer (2113) is matched with the load-bearing column (11).
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| JP2005273181A (en) * | 2004-03-23 | 2005-10-06 | Shimizu Corp | Structure of building |
| CN204781358U (en) * | 2015-06-15 | 2015-11-18 | 山东建筑大学 | Steel core concrete column and outsourcing U -shaped steel -concrete composite beam connected node |
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