CN209339309U - A prefabricated concrete column-to-column connection node - Google Patents

Abstract

The utility model discloses an assembled concrete column-column connecting node with simple structure, convenient node construction, low cost, easy replacement of connecting parts, and simplifies the overlapping work of steel bars in the node area. The whole installation process is dry connection, greatly The post-pouring operation in the node area is reduced, no special tools are required, and the construction speed is accelerated; the force transmission is clear and reliable, and the structure remains intact when encountering a low-intensity earthquake; when encountering a high-intensity earthquake, the surrounding side walls The low-yield steel plate first absorbs energy to yield, and the fixing nut resists the vertical shear force and horizontal tension, and achieves the effect of energy dissipation in this process; then the connecting parts at the four corners of the concrete column also gradually reach yield, and the connecting parts The adjusting nuts on both sides resist the vertical tension; energy is dissipated sequentially from the outside to the inside, which ensures the mechanical performance of the fabricated concrete column-to-column joint structure under earthquakes of different intensities and the rapid repairability of the structure after strong earthquakes.

Description

A prefabricated concrete column-to-column connection node

technical field

The utility model relates to the technical field of construction engineering, in particular to an assembled concrete column connection node.

Background technique

In recent years, in order to promote the transformation and upgrading of the construction industry, the construction industry is vigorously developing prefabricated buildings. As one of the most common structural systems, prefabricated concrete frame structures are widely used in public buildings such as shopping malls, garages, and office buildings. The mechanical performance of prefabricated frame beam-column joints plays an important role in the overall performance of the structure, and the connection technology of prefabricated components is attracting more attention from technicians.

At present, the precast concrete frame column-column connection joint technologies mainly include end-plate bolt connection, steel bar connection sleeve grouting connection, and post-casting after field formwork. The end plate bolt connection realizes the connection of prefabricated columns by pre-embedding steel plates at the ends of the upper and lower precast columns, covering the outside with steel plates, filling the middle with concrete, and fixing the external steel plates with bolts. The disadvantages are: large amount of steel and complicated construction. Rebar connection sleeve grouting connection is a technology to connect the longitudinal reinforcement of the upper and lower prefabricated columns by connecting the reinforcement connection sleeve. Its disadvantages are: high cost and difficult detection of grouting quality. On-site formwork post-casting is a method of completing the connection of prefabricated columns by setting up formwork in the core area of the node, and then carrying out concrete post-casting construction. In the column joint area, the reinforcement arrangement is complicated, which is not convenient for construction. Therefore, the development of a column-to-column connection technology for prefabricated concrete frames with reliable force transmission, low cost and easy construction is of great significance to the promotion and application of prefabricated buildings.

Utility model content

In order to solve the above problems, the utility model provides a prefabricated concrete column-to-column joint with simple structure, simple joint construction, low cost, easy replacement of connecting parts, simplified joint work of steel bars in the joint area, and the whole installation process is dry. Type connection, which greatly reduces the post-pouring operation in the node area, does not require special tools, and speeds up the construction speed; the force transmission is clear and reliable, and the structure remains intact when encountering a low-intensity earthquake; when encountering a relatively high-intensity earthquake, The low-yield steel plates on the surrounding side walls first absorb energy to yield, and the fixing nuts resist vertical shear force and horizontal tension, achieving the effect of energy dissipation in this process; then the connecting parts at the four corners of the concrete column also gradually yield , the adjusting nuts on both sides of the connecting parts resist the vertical tension; the energy is dissipated sequentially from the outside to the inside, which ensures the mechanical performance of the assembled concrete column-column joint structure under earthquakes of different intensities and the rapidity of the structure after strong earthquakes. Fix performance.

In order to achieve the above object, the utility model adopts the following technical solutions to solve it.

An assembled concrete column-to-column connection node, comprising: an upper precast concrete column, a lower precast concrete column and a cover plate; the upper precast concrete column and the lower precast concrete column are respectively provided with longitudinal connecting bars and transverse connecting bars, the The longitudinal connecting bars and the transverse connecting bars are fixedly connected; the same cuboids are removed from the four corners of the bottom of the upper precast concrete column respectively to form an upper cross connecting end, and the upper cross connecting end is flush with the side walls of the upper precast concrete column respectively. The upper screw rod is arranged horizontally; the same cuboid is removed from the top four corners of the lower precast concrete column to form the lower cross connection end corresponding to the upper cross connection end, and the upper screw rod is arranged horizontally on the side wall of the lower cross connection end. Corresponding lower screw rods; fixed holes corresponding to upper screw rods and lower screw rods are respectively arranged on the cover plate, and the upper screw rods and lower screw rods respectively pass through the fixing holes and are fixed by fixing nuts.

According to the prefabricated concrete column connection node of the present invention, the longitudinal connecting bars and transverse connecting bars in the precast concrete column of the upper section and the precast concrete column of the lower section are connected by binding, and the four corners of the bottom of the precast concrete column of the upper section are respectively removed from the same cuboid (It can also be a cube) to form a protruding upper cross connection end, and upper screw rods are arranged horizontally on the side walls of the upper cross connection end and the upper section of the prefabricated concrete column that are flush. The top of the lower prefabricated concrete column adopts the same method to form the corresponding lower cross connection end, and the lower cross connection end is correspondingly provided with the lower screw, and the upper screw and the corresponding lower screw respectively pass through the corresponding fixing holes on the cover plate and pass through the fixing nuts Fixed, the cover plate is made of steel plate with low yield point, so that the upper precast concrete column and the lower precast concrete column are fixedly connected. The joints of the prefabricated concrete column-column connection of the utility model are reasonably stressed, the connection is firm, and the overall stability and anti-seismic performance are good; when an earthquake occurs, the upper and lower cross connection ends and the side walls of the prefabricated concrete column are first to absorb energy To achieve yield, the fixed nut on the cover plate resists vertical shear force and horizontal pull force, the joint construction is simple, the force transmission is clear and reliable, the cost is low, the practicability is strong, it is easy to popularize and use, and has significant economic and social benefits.

Preferably, the same cuboid around the upper cross connection end is removed to form an upper rectangular connection end, and the same cuboid around the lower cross connection end is removed to form a lower rectangular connection end corresponding to the upper rectangular connection end.

According to the assembled concrete column connection node of the present utility model, the same protruding cuboids around the upper cross connection end and the lower cross connection end are respectively removed to form corresponding upper rectangular connection ends and lower rectangular connection ends; and the upper screw is set Corresponding lower screw rods are arranged on the four side walls of the upper rectangular connecting end and the four side walls of the lower rectangular connecting end, and the cover plate passes through the upper screw rod and the lower screw rod and is fixed by a fixing nut.

As a preference, the longitudinal connecting bars at the four corners or around the upper precast concrete column protrude from the bottom end of the upper precast concrete column, and the protruding end of the longitudinal connecting bar is provided with an upper embedded part; The protruding end of the longitudinal connecting rib in the lower precast concrete column is provided with a lower pre-embedded part corresponding to the upper pre-embedded part; the upper pre-embedded part and the lower pre-embedded part are fixedly connected by a connecting part.

According to the prefabricated concrete column-column connection node of the present invention, the upper longitudinal connecting ribs protrude from the four corners or the bottom of the surrounding prefabricated concrete column of the upper section respectively, and the upper pre-buried parts are arranged, and the lower longitudinal connecting ribs are respectively prefabricated from the lower section. The four corners or the surrounding tops of the concrete column protrude and set the lower embedded part corresponding to the upper embedded part. The upper embedded part and the lower embedded part are fixedly connected by connecting parts, and then the upper precast concrete column and the lower precast The concrete column is fixedly connected; the connecting parts can resist vertical tension, and the connection stability of the nodes is strengthened through the embedded parts and connecting parts. When the prefabricated concrete column-to-column connection node structure bears the load, the embedded parts and connecting parts at the four corners bear the load first; when the load is large, the surrounding embedded parts and connecting parts bear the load further, improving the assembly Stability of concrete column-to-column joint structures.

Preferably, the connecting part includes two adjusting nuts and an I-shaped connecting rod; one end of each adjusting nut is provided with a threaded hole, the other end of the adjusting nut is provided with a bayonet, and the two ends of the I-shaped connecting rod are respectively Pass through the bayonet and be movably arranged in the two adjusting nuts; the protruding end of the longitudinal connecting rib is provided with external threads, and the upper embedded part and the lower embedded part are respectively the external thread ends of the longitudinal connecting ribs. The external thread matches the internal thread of the threaded hole.

According to the assembled concrete column connection node of the utility model, the two ends of the I-shaped connecting rod pass through the bayonet respectively and are movably arranged in the two adjusting nuts, and the two adjusting nuts can respectively rotate horizontally and independently around the I-shaped connecting rod. Moving up and down, the external thread end of the longitudinal connecting rib is screwed into the threaded hole of the adjusting nut through the matching external thread and internal thread, and then the upper and lower longitudinal connecting ribs are connected and tightened. The connecting parts are easy to replace, which simplifies the overlapping work of the steel bars in the joint area. The whole installation process is a dry connection, which greatly reduces the post-casting work in the joint area. No special tools are required, and the construction speed is fast.

Preferably, grooves are respectively provided on the end faces of the two ends of the I-shaped connecting rod, and the grooves are matched with the screw heads of the longitudinal connecting ribs.

According to the assembled concrete column-to-column connection node of the present utility model, when the threaded hole of the adjusting nut is screwed into the longitudinal connection bar is deep, the screw head of the longitudinal connection bar is in the groove, and the longitudinal connection bar is limited to ensure that the joint The stability of the connection.

As preferably, the connecting part includes two adjusting nuts and an I-shaped connecting rod; one end of each adjusting nut is provided with a screw rod, and the other end of the adjusting nut is provided with a bayonet, and the two ends of the I-shaped connecting rod respectively pass through Pass through the bayonet and be movably arranged in the two adjusting nuts; the protruding end of the longitudinal connecting rib is provided with a reinforcing bar connecting sleeve, and the upper pre-embedded part and the lower pre-embedded part are respectively a reinforcing bar connecting sleeve. The reinforcing bar connecting sleeve is matched with the screw rod.

According to the assembled concrete column-to-column connection node of the present invention, the upper and lower longitudinal connecting bars are respectively equipped with steel bar connecting sleeves, and the screw on the adjusting nut is screwed into the steel bar connecting sleeves through mutually matching external threads and internal nuts. Realize the detachable connection between the connecting part and the longitudinal connecting ribs at both ends.

Preferably, a limit block is provided at the bottom of the upper cross connection end, and a limit groove matching the limit block is provided at the top end of the lower cross connection end.

According to the connection node of the assembled concrete column of the utility model, the limit block at the upper cross connection end can be inserted into the limit groove at the lower cross connection end, so as to increase the fit degree of the joint connection and ensure the lateral direction of the joint connection of the assembly concrete column column Stability, and easy alignment and installation of covers, connecting parts, etc.

Preferably, the limiting block is a trapezoidal limiting block, and the limiting groove is a trapezoidal limiting groove.

According to the assembled concrete column-column connecting node of the present invention, the trapezoidal limiting block can be inserted into the limiting groove as the trapezoidal limiting groove, so that the stability of the assembled concrete column-column connecting node structure is better.

Preferably, it also includes a first energy dissipation element and a second energy dissipation element; the first energy dissipation element is covered and arranged on all the outer surfaces of the bottom of the upper precast concrete column, and the first energy dissipation element is arranged on There is a socket corresponding to the longitudinal connecting rib, one end of the upper screw is connected to the upper precast concrete column, and the other end of the upper screw passes through the first energy dissipation element and the cover plate in sequence and passes through the fixing nut fixed; the second energy-dissipating element is covered and arranged on all outer surfaces of the top of the lower precast concrete column, and the second energy-dissipating element is provided with an insertion hole corresponding to the longitudinal connecting rib, and the lower One end of the screw is connected to the lower section of the prefabricated concrete column, and the other end of the lower screw passes through the second energy dissipation element and the cover plate sequentially and is fixed by a fixing nut.

According to the assembled concrete column-to-column connection node of the present invention, the first energy-dissipating element is coated on all the outer surfaces of the bottom of the upper precast concrete column, that is, the first energy-dissipating element is coated on the bottom and sides of the upper cross connection end. The outer surface of the wall and the bottom surface of the upper precast concrete column protruding from the longitudinal connecting bars, the four corners of the first energy dissipation element are provided with sockets for inserting the longitudinal connecting bars to increase the connection accuracy of the upper and lower longitudinal connecting bars, Ensure that the connecting parts connect and tighten the upper and lower longitudinal connecting ribs. The bottom of the first energy dissipation element forms a trapezoidal limit block, and the upper end of the second energy dissipation element corresponds to a trapezoidal limit groove to increase the fit of the node connection. The first energy-dissipating element is pre-installed on the inside and outside of the side wall that is flush with the upper precast concrete column. The upper screw is embedded in the upper precast concrete column to increase the connection between the first special-shaped steel plate and the upper precast concrete column. The setting of the second energy dissipating element is the same as that of the first energy dissipating element, except that the top of the second energy dissipating element forms a trapezoidal limiting groove corresponding to the trapezoidal limiting block. The first energy-dissipating element and the second energy-dissipating element are respectively steel plates, and the force of an earthquake is buffered by utilizing the energy-dissipating effect of the steel plates. At the same time, the steel plate coated on the trapezoidal limit block and the trapezoidal limit groove can increase the local stiffness and resist the horizontal force of the earthquake.

Preferably, a rubber pad is arranged between the trapezoidal protrusion and the trapezoidal groove.

According to the assembled concrete column-column connection node of the utility model, the rubber pad provided between the trapezoidal bump and the trapezoidal groove utilizes the energy dissipation effect of the rubber to achieve the effect of absorbing energy and shock absorption, and the structure of the assembled concrete column-column connection node is stable. Better performance and better shock resistance; and the rubber pad is made of chlorinated rubber material, which has the function of fire prevention.

Preferably, the fixing hole is a waist-shaped hole.

According to the assembled concrete column-column connecting node of the present invention, the fixing hole on the cover plate is a waist-shaped hole, and the upper screw and the lower screw are allowed to have a small displacement in the waist-shaped hole during an earthquake, so that the assembled concrete column-column connecting node structure reaches The function of shock absorption and energy consumption can avoid damage caused by large energy generated during earthquakes.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the structural representation of the assembled concrete column-column connecting node of the present utility model without cover plate;

Fig. 2 is a structural schematic diagram of the installation cover plate of the assembled concrete column-column connection node of the utility model;

Fig. 3 is the A-A cross-sectional view of the central axis of the connecting part in Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is a schematic structural view of the upper precast concrete column in Fig. 1;

Fig. 6 is a schematic structural view of the lower section of the prefabricated concrete column in Fig. 1;

Fig. 7 is a schematic structural view of the connecting parts in Fig. 1;

Fig. 8 is a schematic structural diagram of the connection between the connecting part and the longitudinal connecting ribs on both sides in Fig. 1;

Fig. 9 is a schematic structural view of the first energy dissipation element in Fig. 1;

Fig. 10 is a schematic structural view of the second energy dissipation element in Fig. 1;

FIG. 11 is a schematic structural view of the cover plate in FIG. 2 .

In the above figure: 1 upper precast concrete column; 2 lower precast concrete column; 3 cover plate; 301 fixing hole; 302 fixing nut; 4 longitudinal connecting rib; 401 upper embedded part; 402 lower embedded part; 5 horizontal connecting rib ;6 upper cross connection end; 601 upper screw; 602 trapezoidal limit block; 7 lower cross connection end; 701 lower screw; 702 trapezoidal limit groove; 8 connecting parts; 810 adjustment nut; I-shaped connecting rod; 821 groove; 9 first energy dissipation element; 901 jack; 10 second energy dissipation element.

Detailed ways

Referring to Fig. 1-8 and Fig. 11, a prefabricated concrete column-column connection node proposed according to an embodiment of the content of the present invention includes: an upper precast concrete column 1, a lower precast concrete column 2 and a cover plate 3; The upper precast concrete column 1 and the lower precast concrete column 2 are respectively provided with longitudinal connecting bars 4 and transverse connecting bars 5, and the longitudinal connecting bars 4 and the transverse connecting bars 5 are fixedly connected; the bottom four corners of the upper precast concrete column 1 Respectively remove the same cuboid to form the upper cross connection end 6, and the upper cross connection end 6 and the side wall of the upper section precast concrete column 1 are horizontally provided with upper screw rods 601 respectively; the top four corners of the lower section precast concrete column 2 Respectively remove the same cuboid to form the lower cross connection end 7 corresponding to the upper cross connection end 6, and the lower screw rod 701 corresponding to the upper screw rod 601 is horizontally arranged on the side wall of the lower cross connection end 7; the cover Fixing holes 301 corresponding to the upper screw 601 and the lower screw 701 are respectively provided on the board 3 , and the upper screw 601 and the lower screw 701 respectively pass through the fixing holes 301 and are fixed by fixing nuts 302 .

In the above embodiment, the longitudinal connecting bars 4 and the transverse connecting bars 5 in the upper section precast concrete column 1 and the lower section precast concrete column 2 are connected by binding, and the same cuboid ( It can also be a cube) to form a protruding upper cross connection end 6, and upper screw rods 601 are arranged laterally on the side walls of the upper cross connection end 6 and the upper precast concrete column 1 that are flush. The top of the lower precast concrete column 2 adopts the same method to form the corresponding lower cross connection end 7, and the lower cross connection end 7 is correspondingly provided with a lower screw 701, and the upper screw 601 and the corresponding lower screw 701 respectively pass through the cover plate 3 and correspond to each other. The fixing hole 301 is fixed by the fixing nut 302, and the cover plate 3 is made of a steel plate with a low yield point, so that the upper precast concrete column 1 and the lower precast concrete column 2 are fixedly connected. The joints of the prefabricated concrete columns of the utility model are reasonably stressed, the connection is firm, and the overall stability and anti-seismic performance are good; when an earthquake occurs, the upper and lower cross connection ends 7 and the side walls of the prefabricated concrete columns are first absorbed The energy reaches yield, and the fixed nut 302 on the cover plate 3 resists vertical shear force and horizontal tension force. The joint construction is simple, the force transmission is clear and reliable, the cost is low, the practicability is strong, it is easy to popularize and use, and has significant economic benefits and social benefits. benefit.

Preferably, the upper cross connection end 6 removes the same cuboid around it to form an upper rectangular connection end, and the lower cross connection end 7 removes the same cuboid around it to form a lower rectangular connection end corresponding to the upper rectangular connection end.

According to the assembled concrete column connection node of the present utility model, the same protruding cuboids around the upper cross connection end 6 and the lower cross connection end 7 are respectively removed to form corresponding upper rectangular connection ends and lower rectangular connection ends; The screw rod 601 is arranged on the four side walls of the upper rectangular connecting end, and the corresponding lower screw rod 701 is arranged on the four side walls of the lower rectangular connecting end.

With reference to Fig. 3, according to an embodiment of the present utility model, the longitudinal connecting bars 4 at the four corners or around the upper precast concrete column 1 protrude from the bottom end of the upper precast concrete column 1, and the longitudinal connecting ribs The protruding end of the rib 4 is provided with an upper pre-embedded part 401; the protruding end of the longitudinal connecting bar 4 in the lower precast concrete column 2 is provided with a lower pre-embedded part 402 corresponding to the upper pre-embedded part 401; The upper embedded part 401 and the lower embedded part 402 are fixedly connected by a connecting member 8 .

In the above embodiments, the upper longitudinal connecting ribs 4 protrude from the four corners or the bottom of the four sides of the upper precast concrete column 1 respectively, and the upper embedded parts 401 are provided, and the lower longitudinal connecting ribs 4 extend from the lower precast concrete column 2 respectively. The four inner corners or the surrounding tops protrude and set the lower pre-embedded part 402 corresponding to the upper pre-embedded part 401. The upper pre-embedded part 401 and the lower pre-embedded part 402 are fixedly connected by the connecting part 8, and then the upper precast concrete column 1 and the lower precast concrete column 2 are fixedly connected; the connecting part 8 can resist vertical tension, and the connection stability of the node is strengthened through the embedded part and the connecting part 8. When the prefabricated concrete column-to-column joint structure bears the load, the embedded parts and connecting parts 8 at the four corners bear the load first; when the load is larger, the surrounding embedded parts and connecting parts 8 further bear the load, improving Stability of prefabricated concrete column-to-column joint structure.

Referring to Figures 1-3 and Figures 7-8, according to an embodiment of the present utility model, the connecting part 8 includes two adjusting nuts 810 and an I-shaped connecting rod 820; one end of each adjusting nut 810 is provided with a threaded hole 811 , the other end of the adjusting nut 810 is provided with a bayonet 812, and the two ends of the I-shaped connecting rod 820 respectively pass through the bayonet 812 and are movably arranged in the two adjusting nuts 810; the protruding end of the longitudinal connecting rib 4 An external thread is provided, and the upper embedded part 401 and the lower embedded part 402 are the external thread ends of the longitudinal connecting rib 4 respectively, and the external thread matches the internal thread of the threaded hole 811 .

In the above embodiment, the two ends of the I-shaped connecting rod 820 respectively pass through the bayonet 812 and are movably arranged in the two adjusting nuts 810, and the two adjusting nuts 810 can rotate horizontally and move up and down around the I-shaped connecting rod 820 respectively. , the external thread end of the longitudinal connecting rib 4 is screwed into the threaded hole 811 of the adjusting nut 810 through the matching external thread and internal thread, and then the upper and lower longitudinal connecting ribs 4 are connected and tightened. The connecting part 8 is easy to replace and simplifies the overlapping work of the steel bars in the node area. The whole installation process is a dry connection, which greatly reduces the post-casting operation in the node area. No special tools are required, and the construction speed is fast.

Referring to FIG. 8 , according to an embodiment of the present invention, grooves 821 are respectively provided on the end surfaces of the two ends of the I-shaped connecting rod 820 , and the grooves 821 are matched with the screw heads of the longitudinal connecting ribs 4 .

In the above embodiment, when the longitudinal connecting rib 4 is screwed into the threaded hole 811 of the adjusting nut 810 deeply, the screw head of the longitudinal connecting rib 4 is against the groove 821, and the longitudinal connecting rib 4 is limited to ensure the node connection stability.

According to an embodiment of the present utility model, the connecting part 8 includes two adjusting nuts 810 and an I-shaped connecting rod 820; one end of each adjusting nut 810 is provided with a screw rod, and the other end of the adjusting nut 810 is provided with a bayonet 812, The two ends of the I-shaped connecting rod 820 respectively pass through the bayonet 812 and are movably arranged in the two adjusting nuts 810; The part 401 and the lower pre-embedded part 402 are steel bar connection sleeves respectively, and the steel bar connection sleeves are matched with the screw rods.

In the above embodiments, the upper and lower longitudinal connecting ribs 4 are respectively equipped with reinforcing bar connecting sleeves, and the screw rod on the adjusting nut 810 is screwed into the reinforcing bar connecting sleeves through the external threads and internal nuts that match each other, so as to realize the connecting parts 8 and The detachable connection of the longitudinal connecting ribs 4 at both ends.

Referring to Figures 5-6, according to an embodiment of the present utility model, the bottom end of the upper cross connection end 6 is provided with a limit block, and the top end of the lower cross connection end 7 is provided with a stopper matching the limit block. limit slot.

In the above embodiments, the limit block of the upper cross connection end 6 can be inserted into the limit groove of the lower cross connection end 7 to increase the fit of the joint connection and ensure the lateral stability of the joint connection of the fabricated concrete column column. And it is convenient to align and install the cover plate 3 and the connecting part 8 .

Referring to FIGS. 5-6 , according to an embodiment of the present invention, the limiting block is a trapezoidal limiting block 602 , and the limiting groove is a trapezoidal limiting groove 702 .

In the above embodiments, the trapezoidal limiting block 602 can be inserted into the limiting groove as the trapezoidal limiting groove 702, so that the stability of the joint structure of the assembled concrete columns is better.

Referring to Figures 9-10, according to an embodiment of the present invention, it also includes a first energy dissipation element 9 and a second energy dissipation element 10; the first energy dissipation element 9 is wrapped and arranged on the upper precast concrete column 1 All outer surfaces of the bottom of the first energy-dissipating element 9 are provided with sockets 901 corresponding to the longitudinal connecting ribs 4, one end of the upper screw 601 is connected with the upper precast concrete column 1, and the The other end of the upper screw 601 passes through the first energy dissipation element 9 and the cover plate 3 in turn and is fixed by the fixing nut 302; the second energy dissipation element 10 covers all the outer surfaces of the top of the lower precast concrete column 2 , the second energy dissipation element 10 is provided with a socket 901 corresponding to the longitudinal connecting rib 4, one end of the lower screw 701 is connected to the lower precast concrete column 2, the other end of the lower screw 701 One end passes through the second energy dissipation element 10 and the cover plate 3 in sequence and is fixed by a fixing nut 302 .

In the above embodiment, the first energy dissipating element 9 is covered and arranged on all the outer surfaces of the bottom of the upper precast concrete column 1 , that is, the first energy dissipating element 9 is wrapped on the bottom and the side wall of the upper cross connection end 6 The surface and the bottom surface of the upper precast concrete column 1 protruding from the longitudinal connecting ribs 4, the four corners of the first energy dissipation element 9 are provided with sockets 901 for inserting the longitudinal connecting ribs 4, increasing the connection between the upper and lower longitudinal connecting ribs 4 The accuracy ensures that the connecting part 8 connects and tightens the upper and lower longitudinal connecting ribs 4, the bottom of the first energy dissipation element 9 forms a trapezoidal limit block 602, and the upper end of the second energy dissipation element 10 forms a trapezoidal limit groove 702 correspondingly, Increase the fit of node connections. The upper screw 601 is pre-installed inside and outside the side wall of the first energy-dissipating element 9 flush with the upper precast concrete column 1, and the upper screw 601 is embedded in the upper precast concrete column 1, and the first special-shaped steel plate and the upper precast concrete column 1 are added connectivity. The arrangement of the second energy dissipation element 10 is the same as that of the first energy dissipation element 9 , the difference is that the top of the second energy dissipation element 10 forms a trapezoidal limiting groove 702 corresponding to the trapezoidal limiting block 602 . The first energy-dissipating element 9 and the second energy-dissipating element 10 are respectively steel plates, and the force of the earthquake is buffered by the energy-dissipating effect of the steel plates. At the same time, the steel plate coated on the trapezoidal limiting block 602 and the trapezoidal limiting groove 702 can increase local rigidity and resist partial horizontal force of the earthquake.

According to an embodiment of the present invention, a rubber pad is provided between the trapezoidal limiting block 602 and the trapezoidal limiting groove 702 .

In the above embodiments, rubber pads are filled between the trapezoidal limiting block 602 and the trapezoidal limiting groove 702, and the energy dissipation effect of the rubber is used to absorb energy and shock absorption, and the stability of the assembled concrete column-to-column connection node structure is better. The shock resistance is better; and the rubber pad is made of chlorinated rubber material, which has the function of fire prevention.

According to an embodiment of the present utility model, the fixing hole 301 is a waist-shaped hole.

In the above embodiment, the fixing hole 301 on the cover plate 3 is a waist-shaped hole, and the upper screw 601 and the lower screw 701 are allowed to have a small displacement in the waist-shaped hole during an earthquake, so that the assembled concrete column-column connection node structure can achieve shock absorption. The function of energy can avoid damage due to the large energy generated during the earthquake.

The construction method of the prefabricated concrete column-column connection node of the utility model is as follows: first, the first energy-dissipating element 9 and the second energy-dissipating element 10 are respectively coated on the outer surface of the bottom of the upper precast concrete column 1 and the lower precast concrete column 2, the upper and lower longitudinal connecting ribs 4 pass through the corresponding sockets 901 on the first energy dissipating element 9 and the second energy dissipating element 10 respectively, and the first energy dissipating element 9 and the second energy dissipating element 10 The element 10 is fixed, and the inside and outside of the side wall of the first energy-dissipating element 9 are respectively pre-installed with screw rods 601. The upper precast concrete column 1 is first poured with part of the concrete, and then the upper screw rod 601 is pre-embedded in the upper precast concrete column 1, and then the pouring of concrete is continued. The fixed connection between the first energy dissipation element 9 and the upper precast concrete column 1 is realized, and the second energy dissipation element 10 is installed in the same manner as the first energy dissipation element 9 . Then insert the upper precast concrete column 1 covering the energy dissipation elements into the lower precast concrete column 2 through the matching trapezoidal stop block 602 and trapezoidal stop slot 702 . Press the adjusting nuts 810 at the two ends of the connecting part 8, so that the connecting part 8 is inserted between the upper and lower longitudinal connecting ribs 4, respectively rotate the adjusting nuts 810 on both sides, so that the threaded ends of the longitudinal connecting ribs 4 are screwed into the adjusting nuts 810, and then Connect the upper and lower longitudinal connecting ribs 4 together. Next, the low yield point steel plate is covered on the side walls of the upper cross connection end 6 and the lower cross connection, and the upper screw rod 601 and the lower screw rod 701 respectively pass through the fixing holes 301 on the cover plate 3 and are fixed by nuts. Finally, a rubber material is filled between the trapezoidal limiting block 602 and the trapezoidal limiting groove 702, which may be a chlorinated rubber material.

The assembled concrete column-to-column connection node structure of the utility model is simple, the node construction is simple, the force transmission is clear and reliable, the cost is low, the connecting parts 8 are easy to replace, and the overlapping work of the steel bars in the node area is simplified. The whole installation process is dry. The connection greatly reduces the post-pouring operation in the joint area, does not require special tools, and speeds up the construction speed; the force transmission is clear and reliable, and the structure remains intact when encountering a low-intensity earthquake; when encountering a relatively high-intensity earthquake, the surrounding The low-yield steel plate on the side wall first absorbs energy to yield, and the fixing nut 302 resists the vertical shear force and horizontal tension force, and achieves the effect of energy dissipation in this process; then the connecting parts 8 at the four corners of the concrete column also gradually reach Yield, the adjusting nuts 810 on both sides of the connecting part 8 resist the vertical tension; the final damage is the trapezoidal limiting block 602 and the trapezoidal limiting groove 702 of the concrete column, the trapezoidal limiting block 602 and the trapezoidal limiting groove 702 can partially resist earthquakes horizontal force. The assembled concrete column-to-column connection nodes of the utility model consume energy sequentially from the outside to the inside, which ensures the mechanical performance of the assembled concrete column-to-column connection node structure under the action of earthquakes of different intensities and the rapid repairability of the structure after strong earthquakes. The construction cost is low, which is conducive to the popularization and use of the prefabricated concrete frame structure, and has significant economic and social benefits.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these changes and modifications of the utility model fall within the scope of the claims of the utility model and their equivalent technologies, the utility model is also intended to include these changes and modifications.

Claims (10)

1. a kind of assembly concrete column column connected node characterized by comprising upper section precast concrete column (1), lower section are pre- Concrete column (2) processed and cover board (3)；It is respectively set in the upper section precast concrete column (1) and lower section precast concrete column (2) There are longitudinally connected muscle (4) and lateral connection muscle (5), the longitudinally connected muscle (4) is fixedly connected with lateral connection muscle (5)；

The bottom four corners of the upper section precast concrete column (1) remove identical cuboid respectively and form cross connecting pin (6), Upper screw rod is laterally set respectively on the upper cross connecting pin (6) side wall concordant with upper section precast concrete column (1) (601)；

The top quadrangle of the lower section precast concrete column (2) removes identical cuboid formation respectively and connect with the upper cross (6) corresponding lower cross connecting pin (7) is held, is horizontally arranged with respectively and upper screw rod on the side wall of the lower cross connecting pin (7) (601) corresponding lower screw rod (701)；

Fixation hole (301) corresponding with upper screw rod (601) and lower screw rod (701) is respectively arranged on the cover board (3), it is described Upper screw rod (601) and lower screw rod (701) are each passed through the fixation hole (301) and are fixed by fixture nut (302).

2. assembly concrete column column connected node according to claim 1, which is characterized in that the upper cross connecting pin (6) the identical cuboid of removal surrounding forms rectangle connecting pin, and lower cross connecting pin (7) the removal surrounding is identical rectangular Body forms lower rectangle connecting pin corresponding with upper rectangle connecting pin.

3. assembly concrete column column connected node according to claim 1 or 2, which is characterized in that the upper section is prefabricated Longitudinally connected muscle (4) in concrete column (1) at four corners or surrounding stretches out the bottom of the upper section precast concrete column (1) End, the extension end of the longitudinally connected muscle (4) is provided with preburying part (401)；It is vertical in the lower section precast concrete column (2) The extension end of dowel (4) is provided with lower preburying part (402) corresponding with upper preburying part (401)；It is described pre-buried Portion (401) is fixedly connected with lower preburying part (402) by connecting component (8).

4. assembly concrete column column connected node according to claim 3, which is characterized in that the connecting component (8) Include two adjusting nuts (810) and work shape connecting rod (820)；One end of each adjusting nut (810) is provided with threaded hole (811), the other end of adjusting nut (810) is provided with bayonet (812), and the both ends of the work shape connecting rod (820) are each passed through Bayonet (812) is simultaneously movably arranged in two adjusting nuts (810)；The extension end of the longitudinally connected muscle (4) is provided with outer spiral shell Line, the upper preburying part (401) and lower preburying part (402) are respectively the male end of longitudinally connected muscle (4), the external screw thread with The internal screw thread of the threaded hole (811) matches.

5. assembly concrete column column connected node according to claim 4, which is characterized in that the work shape connecting rod (820) end face at both ends is respectively set fluted (821), the screw head phase of the groove (821) and the longitudinally connected muscle (4) Matching.

6. assembly concrete column column connected node according to claim 3, which is characterized in that the connecting component (8) Include two adjusting nuts (810) and work shape connecting rod (820)；One end of each adjusting nut (810) is provided with screw rod, adjusts The other end of nut (810) is provided with bayonet (812), and the both ends of the work shape connecting rod (820) are each passed through bayonet (812) simultaneously It is movably arranged in two adjusting nuts (810)；It is provided with reinforcing steel bar connecting sleeve tube on the extension end of the longitudinally connected muscle (4), The upper preburying part (401) and lower preburying part (402) are respectively reinforcing steel bar connecting sleeve tube, the reinforcing steel bar connecting sleeve tube and the screw rod Match.

7. assembly concrete column column connected node according to claim 1, which is characterized in that the upper cross connecting pin (6) bottom end is provided with limited block, and the top of the lower cross connecting pin (7) is provided with the limit to match with the limited block Slot.

8. assembly concrete column column connected node according to claim 7, which is characterized in that the limited block is trapezoidal Limited block (602), the limiting slot are trapezoidal limiting slot (702).

9. assembly concrete column column connected node according to claim 8, which is characterized in that further include the first energy consumption member Part (9) and the second dissipative cell (10)；First dissipative cell (9) cladding is set to the upper section precast concrete column (1) Bottom all outer surfaces, be provided with jack corresponding with longitudinally connected muscle (4) on first dissipative cell (9) (901), one end of the upper screw rod (601) is connect with the upper section precast concrete column (1), the upper screw rod (601) it is another One end sequentially passes through the first dissipative cell (9) and cover board (3) and is fixed by fixture nut (302)；

Second dissipative cell (10) cladding is set to the top all outer surfaces of the lower section precast concrete column (2), institute It states and is provided with jack (901) corresponding with longitudinally connected muscle (4), the lower screw rod on the second dissipative cell (10) (701) one end is connect with the lower section precast concrete column (2), and the other end of the lower screw rod (701) sequentially passes through second Dissipative cell (10) and cover board (3) are simultaneously fixed by fixture nut (302).

10. assembly concrete column column connected node according to claim 8, which is characterized in that the trapezoidal limited block (602) rubber pad is provided between trapezoidal limiting slot (702).