CN215715983U - Beam column energy consumption connecting piece - Google Patents
Beam column energy consumption connecting piece Download PDFInfo
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- CN215715983U CN215715983U CN202122011190.5U CN202122011190U CN215715983U CN 215715983 U CN215715983 U CN 215715983U CN 202122011190 U CN202122011190 U CN 202122011190U CN 215715983 U CN215715983 U CN 215715983U
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Abstract
The utility model discloses a beam-column energy-consumption connecting piece which comprises a connecting end plate, wherein the connecting end plate is vertically arranged at a connecting node of a precast beam and a precast column, energy-consumption piece mounting grooves are symmetrically formed in the upper part and the lower part of the beam end of the precast beam, and two energy-consumption units are respectively arranged in the upper energy-consumption piece mounting groove and the lower energy-consumption piece mounting groove; one end of the energy consumption unit is fixedly connected with the connecting end plate, and the other end of the energy consumption unit is fixed with the beam end face of the precast beam; the prestressed tendons are arranged between the connecting end plate and the beam end of the precast beam, one ends of the prestressed tendons are fixedly inserted in the precast beam, and the other ends of the prestressed tendons penetrate through the connecting end plate and are anchored on the connecting end plate through bolts; the prestressed tendons are arranged between the connecting end plates and the precast beams, so that the precast members can be restored to the initial device as far as possible after the earthquake; through setting up power consumption spare mounting groove, provide great rotation space for the beam-ends of precast beam to make power consumption unit can fully be out of shape under the earthquake effect, and effectively improved the power consumption ability of beam column power consumption connecting piece.
Description
Technical Field
The utility model belongs to the technical field of beam-column energy-consumption connecting pieces, and particularly relates to a beam-column energy-consumption connecting piece.
Background
With the rapid development of the assembly type building, the dry type connecting technology does not need to carry out a large amount of wet type operation on site, so that the development concepts of green, environment-friendly, energy-saving and high-efficiency of the assembly type building are met, and the wide attention of social groups is paid; the connecting part of the precast beam column is called a node core area, and the node core area is used as a key part of the main structure for stress; the dry type connecting structure of the core area of the existing node comprises welding, a steel hanging bracket, bracket connection and the like.
In the welding connection structure, as the plastic hinge is not arranged, the anti-seismic performance is poorer; in the steel hanger connecting structure, the number of components is large, the structure is complex, and the requirement on installation accuracy is high; the bracket connection comprises a bright bracket connection and a dark bracket connection; the open bracket occupies large space and is poor in appearance after being exposed; the hidden bracket inevitably affects the mechanical property of the component due to the consideration of the aesthetic property, and meanwhile, the reinforcement of the beam end and the bracket is complex, and the construction difficulty is high; meanwhile, the self-resetting capability of the existing dry-type connecting structure is poor.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model provides a beam-column energy-consumption connecting piece, which aims to solve the technical problems of poor anti-seismic performance and poor self-resetting capability of a dry-type connecting structure in the core area of the conventional node.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a beam-column energy-consumption connecting piece which is arranged at a connecting node of a prefabricated column and a prefabricated beam; the energy consumption connecting piece comprises a connecting end plate, two energy consumption units and a prestressed tendon; the connecting end plate is vertically arranged at a connecting node of the precast beam and the precast column, one side of the connecting end plate is fixed with the side wall of the precast column, and the other side of the connecting end plate is fixed with the beam end of the precast beam;
energy dissipation piece mounting grooves are symmetrically formed in the upper portion and the lower portion of the beam end of the precast beam, and the two energy dissipation units are respectively arranged in the upper energy dissipation piece mounting groove and the lower energy dissipation piece mounting groove; one end of the energy consumption unit is fixedly connected with the connecting end plate, and the other end of the energy consumption unit is fixed with the beam end face of the precast beam; the prestressed tendons are arranged between the connecting end plates and the beam ends of the precast beams, one ends of the prestressed tendons are fixedly inserted into the precast beams, and the other ends of the prestressed tendons penetrate through the connecting end plates and are anchored on the connecting end plates through bolts.
Furthermore, a back-welded steel plate is arranged at the anchoring point of the prestressed tendon and the connecting end plate, and the back-welded steel plate is arranged at one side close to the precast beam; the beam end of the precast beam is provided with a back plate mounting notch, and the back welding steel plate is arranged in the back plate mounting notch in a matching manner; one side of the back-welding steel plate is welded and fixed with the connecting end plate, the other side of the back-welding steel plate is tightly attached to the mounting notch of the back plate, and the prestressed tendons penetrate through the back-welding steel plate.
Furthermore, the two energy consumption units have the same structure, each energy consumption unit comprises two vertically parallel energy consumption modules, and the two energy consumption modules are symmetrically arranged along the central line of the width direction of the precast beam;
each energy dissipation module comprises a column side friction plate, two energy dissipation plates and a beam side friction plate, wherein the column side friction plate is vertically fixed on the connecting end plate and horizontally extends towards one side of the precast beam; the beam side friction plate is vertically fixed on the vertical surface of the energy consumption piece mounting groove and horizontally extends towards one side of the prefabricated column; the two energy dissipation plates are symmetrically arranged on two sides of the column side friction plate and the beam side friction plate, one end of each energy dissipation plate is fixedly connected with the extending end of the column side friction plate through a bolt, and the other end of each energy dissipation plate is fixedly connected with the extending end of the beam side friction plate through a bolt.
Furthermore, the extending ends of the column side friction plate and the beam side friction plate are provided with arc-shaped notches, and the arc-shaped notches are arranged on one side close to the center of the connecting node.
Furthermore, the energy consumption plate is provided with a first pore passage and a second pore passage; the first pore channel and the second pore channel are arranged in the direction far away from the center of the connecting node, and the first pore channel and the second pore channel are intersected and communicated at the center line position of the energy consumption plate;
the extending end of the column side friction plate is provided with a first bolt hole, and the first bolt hole is matched with the first pore channel; the extending end of the beam side friction plate is provided with a second bolt hole, and the second bolt hole is matched with the second pore channel;
one bolt penetrates through the first pore channel of the energy dissipation plate and the first bolt hole of the column side friction plate in sequence to fixedly connect the column side friction plate and the energy dissipation plate together; and the other bolt sequentially penetrates through a second pore passage of the energy dissipation plate and a second bolt hole of the beam side friction plate to fixedly connect the beam side friction plate and the energy dissipation plate together.
Furthermore, the middle part of the energy consumption plate is uniformly provided with a plurality of strip-shaped holes, and the long axis direction of the strip-shaped holes is consistent with the axis direction of the energy consumption plate;
one end of the energy consumption plate is provided with a first fixing hole, and the other end of the energy consumption plate is provided with a second fixing hole; the extending end of the column side friction plate is provided with a first bolt hole, and the first bolt hole is matched with the first fixing hole; the extending end of the beam side friction plate is provided with a second bolt hole, and the second bolt hole is matched with the second fixing hole; one bolt penetrates through the first fixing hole of the energy dissipation plate and the first bolt hole of the column side friction plate in sequence to fixedly connect the column side friction plate and the energy dissipation plate together; and the other bolt sequentially penetrates through the second fixing hole of the energy dissipation plate and the second bolt hole of the beam side friction plate to fixedly connect the beam side friction plate and the energy dissipation plate together.
Furthermore, a beam end embedded plate is arranged on the vertical surface of the energy consumption part mounting groove, one side of the beam end embedded plate is vertically fixed with the beam side friction plate, and the other side of the beam end embedded plate is fixedly connected with the beam inner longitudinal rib in the precast beam.
Further, the device also comprises a column side fixing plate; the column side fixing plates are arranged on the side walls of the prefabricated columns, are vertically parallel to the connecting end plates and are symmetrically arranged; the column side fixing plate and the connecting end plate are fixedly connected together through a high-strength bolt rod; the high-strength bolt rod horizontally penetrates through the prefabricated column, one end of the high-strength bolt rod is fixedly connected with the column side fixing plate, and the other end of the high-strength bolt rod is fixedly connected with the connecting end plate.
Furthermore, a grouting layer is adopted between the column side fixing plate and/or the connecting end plate and the side wall of the prefabricated column for filling and compacting.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a beam-column energy-consumption connecting piece, which is characterized in that a prestressed tendon is arranged between a connecting end plate and a precast beam, so that a precast member can be recovered to an initial device as far as possible after an earthquake under the action of prestress, the self-resetting effect is achieved, the residual deformation is reduced, and the replacement and maintenance after the earthquake can be realized; energy consumption piece mounting grooves are formed in the upper portion and the lower portion of the beam end of the precast beam, and the two energy consumption units are respectively arranged in the two energy consumption piece mounting grooves, so that a large rotating space is provided for the beam end of the precast beam, the energy consumption units can be fully deformed under the action of an earthquake, and energy dissipation is realized; meanwhile, the bending resistance reduction caused by the fact that the beam end concrete of the precast beam is crushed due to stress concentration is avoided, the energy consumption capacity of the beam-column energy consumption connecting piece is effectively improved, the anti-seismic performance of the structure is further improved, and the service life of the building structure is prolonged.
Furthermore, a back-welded steel plate is arranged at the anchoring point of the prestressed tendon and the connecting end plate, so that an anchoring space is provided for the prestressed tendon, and the anchoring strength of the prestressed tendon is improved; the back plate installation gap is arranged at the beam end of the precast beam, the back welding steel plate is installed at the back plate installation gap, the back welding steel plate and the concrete at the back plate installation gap can effectively share the bending moment and the building of the prestressed tendons, the stress loss of the prestressed tendons is reduced, the shearing resistance and the residual deformation resistance of the node are greatly improved, and the node can still keep a good self-resetting effect after an earthquake occurs.
Furthermore, the column side friction plate is connected with the beam side friction plate by using the energy consumption plate, so that the friction energy consumption capability of the energy consumption unit is effectively improved, the prying force of the friction plate is enhanced, the capability of dissipating the bending moment transmission at the beam end is better, and the bending resistance of the beam-column joint is effectively improved; two ends of the energy dissipation plate are respectively connected with the column side friction plate and the beam side friction plate through bolts, so that the energy dissipation plate can be conveniently replaced or maintained after the earthquake.
Further, beam side end plates in the energy consumption units are fixedly connected with the precast beams through beam end embedded plates; through setting up power consumption spare mounting groove, provide great rotation space for the beam-ends of precast beam to make the beam-ends produce bigger corner under the earthquake action, let power consumption spare full play effect, effectively improved the power consumption ability of power consumption connecting piece, improved the anti-seismic performance of structure.
Furthermore, a column side fixing plate is arranged on the side wall of the prefabricated column, the column side fixing plate is fixedly connected with the connecting end plate through a high-strength bolt rod, the high-strength bolt rod is used for connecting the beam column, and the design concept of 'strong joint and weak member' is met; the plastic hinge is controlled at the node position, and the effect of vibration reduction is achieved through the yield energy consumption of the energy consumption connecting piece at the node; meanwhile, the device is convenient to replace or repair after an earthquake.
Furthermore, due to the limitation of the prefabrication precision of the prefabricated column, the situation of uneven surface can be avoided, the surface of the prefabricated column is ensured to be flat by arranging a grouting layer, and the installation alignment of the connecting end plate is realized; meanwhile, the grouting material of the grouting layer has a bonding effect on the high-strength bolt rod, so that the tensile force of the high-strength bolt rod is reduced, and the damage of the connecting end plate is delayed; the node rigidity is improved, and the force transmission is more reliable.
Drawings
Fig. 1 is a schematic view of a connection structure of an energy-consuming connector and a precast beam in embodiment 1;
FIG. 2 is a schematic structural diagram of an energy consuming unit according to embodiment 1;
FIG. 3 is a schematic view of a column-side structure of a connection end plate in embodiment 1;
FIG. 4 is a schematic view showing a structure of a beam side of a connection end plate in embodiment 1
Fig. 5 is a schematic view of the overall assembly structure of the energy dissipating connector according to embodiment 1;
FIG. 6 is a schematic view of a connection structure of the energy-consuming connecting member and the precast beam according to embodiment 2;
FIG. 7 is a schematic structural diagram of an energy consuming unit according to embodiment 2;
fig. 8 is a schematic view of the overall assembly structure of the dissipative connector according to embodiment 2.
The energy-consuming system comprises a prefabricated column 1, a prefabricated beam 2, a connecting end plate 3, a column side fixing plate 4, an energy-consuming unit 5, a high-strength bolt rod 6, a grouting layer 7 and prestressed tendons 8, wherein the prefabricated column is a prefabricated beam; 21 energy dissipation part mounting grooves, 22 back plate mounting notches, 23 prestressed rib holes and 24 beam inner longitudinal ribs; 31 back welding a steel plate; the concrete comprises a 51-column side friction plate, a 52-energy dissipation plate, a 53-beam side friction plate, a 54-beam side embedded plate, a 55-high-strength bolt and a 56-stiffening rib.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1
As shown in fig. 1 to 5, the present embodiment 1 provides a beam-column energy-consuming connecting member, which is disposed at a connecting node between a precast column 1 and a precast beam 2; the energy dissipation connecting piece comprises a connecting end plate 3, two energy dissipation units 4, prestressed tendons 8 and a column side fixing plate 9.
The connecting end plate 3 is vertically arranged at the connecting node of the precast beam 1 and the precast column 2, one side of the connecting end plate 3 is fixed with the side wall of the precast column 1, and the other side of the connecting end plate 3 is fixed with the beam end of the precast beam 2; energy dissipation piece mounting grooves 21 are symmetrically formed in the upper and lower parts of the beam end of the precast beam 2, the two energy dissipation units 5 are respectively arranged in the upper and lower energy dissipation piece mounting grooves 21, and the two energy dissipation units 5 are identical in structure; one end of the energy consumption unit 5 is fixedly connected with the connecting end plate 3, and the other end of the energy consumption unit is fixed with the beam end face of the precast beam 2.
In this embodiment 1, energy-consuming part installation grooves are formed in the upper and lower beam ends of the precast beam, and the two energy-consuming units are respectively arranged in the two energy-consuming part installation grooves, so that a large rotation space is provided for the beam ends of the precast beam, and the energy-consuming units can be sufficiently deformed under the action of an earthquake, thereby realizing energy dissipation; meanwhile, the bending resistance reduction caused by the fact that the beam end concrete of the precast beam is crushed due to stress concentration is avoided, the energy consumption capacity of the beam-column energy consumption connecting piece is effectively improved, the anti-seismic performance of the structure is further improved, and the service life of the building structure is prolonged.
Each energy consumption unit 5 comprises two vertically parallel energy consumption modules, and the two energy consumption modules are symmetrically arranged along the central line of the width direction of the precast beam 2; each energy dissipation module comprises a column side friction plate 51, two energy dissipation plates 52 and a beam side friction plate 53, wherein the column side friction plate 51 is vertically fixed on the connecting end plate 3 and horizontally extends towards one side of the precast beam 2; the beam side friction plate 53 is vertically fixed on the vertical surface of the energy consumption piece mounting groove 21 and horizontally extends towards one side of the prefabricated column 1; the two energy dissipation plates 52 are symmetrically arranged on two sides of the column-side friction plate 51 and the beam-side friction plate 53 and are positioned between the column-side friction plate 51 and the beam-side friction plate 53; one end of the dissipative plate 53 is fixedly connected to the extended end of the column-side friction plate 51 by a high-strength bolt 55, and the other end of the dissipative plate 53 is fixedly connected to the extended end of the beam-side friction plate 52 by another high-strength bolt 55.
The energy consumption plate 52 is provided with a first hole channel and a second hole channel, the first hole channel and the second hole channel are both arranged in the direction far away from the center of the connecting node, and the first hole channel and the second hole channel are intersected and communicated at the center line position of the energy consumption plate 52; a first bolt hole is formed in the extending end of the column-side friction plate 51, and the first bolt hole is matched with the first pore channel; the extending end of the beam side friction plate 53 is provided with a second bolt hole, and the second bolt hole is matched with the second pore channel; one of the high-strength bolts 55 sequentially penetrates through the first hole of the energy dissipation plate 52 and the first bolt hole of the column-side friction plate 51, and fixedly connects the column-side friction plate 51 and the energy dissipation plate 52 together; another bolt penetrates through the second hole of the dissipative plate 52 and the second bolt hole of the beam-side friction plate 53 in sequence, so as to fixedly connect the beam-side friction plate 53 and the dissipative plate 52 together.
In this embodiment 1, the energy dissipation plate 52 is provided with the first hole and the second hole, the first hole and the second hole are both arranged in a direction away from the center of the connection node, and the first hole and the second hole intersect and run through at the central line of the energy dissipation plate 52, and the energy dissipation plate is used to connect the column-side friction plate and the beam-side friction plate, so as to form an oblique energy dissipation friction member, thereby effectively improving the friction energy dissipation capability of the energy dissipation unit, enhancing the prying force of the friction plate, better dissipating the bending moment transfer capability of the beam end, and effectively improving the bending resistance of the beam-column node.
Preferably, two first hole channels and two second hole channels are respectively arranged on the energy consumption plate 52, and the two first hole channels or the two second hole channels are arranged in parallel; similarly, the number of the first bolt holes in the column-side friction plate 51 and the number of the second bolt holes in the beam-side friction plate 53 are two, and the first bolt holes and the second bolt holes are respectively matched with the first hole passage or the second hole passage.
The extending ends of the column side friction plate 51 and the beam side friction plate 53 are provided with arc-shaped notches, and the arc-shaped notches are arranged at one side close to the center of the connecting node; the column side friction plate 51 and the beam side friction plate 53 are weakened by providing arc-shaped notches at the extending ends of the column side friction plate 51 and the beam side friction plate 53; meanwhile, a rotating space is provided for the column side friction plate 51 and the beam side friction plate 53, so that earthquake damage can be ensured to occur on the energy consumption plate, and the energy consumption capability of the node is fully exerted.
Reinforcing ribs 56 are arranged between the column side friction plate 51 and the connecting end plate 3 and between the beam side friction plate 53 and the beam side embedded plate 54, and the reinforcing ribs 56 are horizontally arranged and are positioned between the two energy consumption modules; one end of the reinforcing rib 56 is welded and fixed to the column-side friction plate 51, and the other end is welded and fixed to the connection end plate 3; or one end of the reinforcing rib 56 is welded and fixed with the beam side friction plate 51, and the other end is welded and fixed with the beam side embedded plate 54; by arranging the reinforcing ribs, the reliable connection between the column side friction plate and the connecting end plate and between the beam side friction plate and the beam side embedded plate is effectively improved, the energy consumption plate is guaranteed to be damaged during earthquake, and the energy consumption capability of the energy consumption plate is fully exerted.
A beam-end embedded plate 54 is arranged on the vertical surface of the energy dissipation part mounting groove 21, one side of the beam-end embedded plate 54 is vertically welded and fixed with the beam-side friction plate 53, and the other side of the beam-end embedded plate 54 is fixedly connected with the in-beam steel bar 24 of the precast beam 2; preferably, the in-beam reinforcing bars 24 are vertically welded to the beam-end embedded plates 54 in a pier head manner.
In this embodiment 1, a plurality of prestressed tendon holes 23 are uniformly formed in a beam end of a precast beam 2, a prestressed tendon 8 penetrates through each prestressed tendon hole 23, a connecting end plate 3 is fixed to the beam end of the precast beam 2 through the prestressed tendon 8, and the connecting end plate 3 is used to form an anchor for the prestressed tendon 8; one end of the prestressed tendon 8 is inserted and fixed in the prestressed tendon hole 23 of the precast beam 2, and the other end is anchored on the connecting end plate 3 through a bolt after penetrating through the connecting end plate 3.
Wherein, a back-welding steel plate 31 is arranged at the anchoring point of the prestressed tendon 8 and the connecting end plate 3, and the back-welding steel plate 31 is arranged at one side close to the precast beam 2; a back plate installation gap 22 is formed in the beam end of the precast beam 2, and a back welding steel plate 31 is arranged in the back plate installation gap 22 in a matching mode; one side of the back welding steel plate 31 is welded and fixed with the connecting end plate 3, and the other side is tightly attached to the back plate mounting notch 22; the prestressed tendons 8 sequentially penetrate through the back-welded steel plate 31 and the connecting end plate 3 and are anchored and fixed with the connecting end plate 3 through bolts; moreover, the bolts for anchoring the prestressed tendons 8 are embedded in the connecting end plates, so that the flatness of the contact surfaces of the connecting end plates and the side walls of the prefabricated columns is guaranteed; the back-welded steel plate is arranged to provide an anchoring position for the prestressed tendons, the prestressed tendons are prevented from being anchored on the column, cross beam column nodes can be met, and the construction and installation are convenient.
The column side fixing plate 4 is arranged on the side wall of the prefabricated column 1, and the column side fixing plate 4 is arranged on one side far away from the prefabricated beam 2 and is vertically parallel to and symmetrically arranged with the connecting end plate 3; the column side fixing plate 4 and the connecting end plate 3 are fixedly connected together through a high-strength bolt rod 6; the high-strength bolt bar 6 horizontally penetrates through the prefabricated column 1, one end of the high-strength bolt bar 6 is fixedly connected with the column side fixing plate 4 through a bolt, and the other end of the high-strength bolt bar 6 is fixedly connected with the connecting end plate 3 through a bolt; the column side fixing plate is arranged on the side wall of the prefabricated column, the column side fixing plate is fixedly connected with the connecting end plate through the high-strength bolt rod, and the high-strength bolt rod is used for connecting the beam column, so that the design concept of 'strong joint and weak member' is met; the plastic hinge is controlled at the node position, and the effect of vibration reduction is achieved through the yield energy consumption of the energy consumption connecting piece at the node; meanwhile, the device is convenient to replace or repair after an earthquake.
A grouting layer 7 is arranged between the column side fixing plate 4 and the side wall of the prefabricated column 1, and the grouting layer 7 is arranged between the connecting end plate 3 and the side wall of the prefabricated column 1; the grouting layer 7 is formed by adopting high-strength grouting materials between the column side fixing plate 4 or the connecting end plate 3 and the side wall of the prefabricated column 1; the prefabricated column has the inevitable condition of uneven surface due to the limitation of the prefabrication precision, and the surface of the prefabricated column is ensured to be flat by arranging the grouting layer, so that the installation alignment of the connecting end plate is realized; meanwhile, the grouting material of the grouting layer has a bonding effect on the high-strength bolt rod, so that the tensile force of the high-strength bolt rod is reduced, and the damage of the connecting end plate is delayed; the node rigidity is improved, and the force transmission is more reliable.
The construction method of the beam-column energy-consumption connecting piece in the embodiment 1 includes the following steps:
anchoring the prestressed tendons in the precast beam by using the connecting end plate, and installing energy consumption units up and down at the beam end of the precast beam;
hoisting the precast beam with the energy-consuming connecting piece to a preset installation position of the precast column;
and fixedly connecting the connecting end plate with the side wall of the prefabricated column, namely finishing the construction of the beam-column energy-consumption connecting piece.
The concrete construction process is as follows:
the connecting end plate is provided with anchoring holes, and the positions of the anchoring holes correspond to the positions of the prestressed tendons one by one; welding a back-welding steel plate at one side of the connecting end plate, wherein the back-welding steel plate is positioned at one side of the precast beam so as to anchor the prestressed reinforcing steel bars; then, welding and fixing the column side friction plate on the connecting end plate;
welding and fixing a beam side friction plate on a beam side embedded plate, and vertically welding beam inner longitudinal ribs of the precast beam on the beam side embedded plate in a pier head mode to form a beam end embedded part; and pre-embedding the beam end embedded parts to the beam top and beam bottom preset positions of the precast beam.
Inserting one end of a prestressed tendon into a prestressed tendon hole of the precast beam, penetrating the other end of the prestressed tendon into an anchoring hole of the connecting end plate, and anchoring the prestressed tendon through a bolt; the back-welded steel plate is arranged at the mounting gap of the back plate, and the protruding beam end concrete part around the back-welded steel plate can share the shearing force and bending moment borne by the prestressed tendons, so that the stress loss caused by member deformation is reduced, and the shearing resistance and the self-resetting effect of the precast beam are effectively enhanced.
And the energy dissipation plate is fixed between the column side friction plate and the beam side friction plate through a high-strength bolt, and energy is dissipated through the deformation of the friction and energy dissipation plate.
Hoisting the precast beam with the energy-consuming connecting piece to a preset installation position of the precast column; and fixing the connecting end plate and the column side fixing plate with the precast beam through high-strength bolt rods, and then adopting high-strength grouting materials to perform grouting treatment on the side wall of the connecting end plate and the precast beam and the contact surface of the column side fixing plate and the side wall of the precast beam, namely completing the construction of the beam-column energy-consuming connecting piece.
The beam-column energy-consumption connecting piece in embodiment 1 is used for connecting the prefabricated beam column, and has the functions of replacement and self-resetting, so as to meet the requirements of building design and construction; under the action of earthquake load, the friction energy consumption between the column side friction plate and the beam side friction plate and the energy consumption plate is utilized to realize the dissipation of a large amount of energy; and under the action of the prestressed tendons, the aim of recovering to the initial state after the earthquake is fulfilled.
Example 2
As shown in fig. 6-8, the beam-column energy-consuming connecting member of embodiment 2 is provided, and the beam-column energy-consuming connecting member of embodiment 2 has substantially the same structure and principle as the beam-column energy-consuming connecting member of embodiment 1, except that a friction plate is used in embodiment 1 to consume energy; and the buckling plate is adopted for energy dissipation in the embodiment 2, namely, the energy dissipation module in the embodiment 2 is different from the energy dissipation module in the embodiment 1.
Specifically, the energy dissipation module in embodiment 2 includes a column-side friction plate 51, two energy dissipation plates 52, and a beam-side friction plate 53, where the column-side friction plate 51 is vertically fixed to the connection end plate 3 and horizontally extends toward one side of the precast beam 2; the beam side friction plate 53 is vertically fixed on the vertical surface of the energy consumption piece mounting groove 21 and horizontally extends towards one side of the prefabricated column 1; the two energy dissipation plates 52 are symmetrically arranged on two sides of the column-side friction plate 51 and the beam-side friction plate 53 and are positioned between the column-side friction plate 51 and the beam-side friction plate 53; one end of the dissipative plate 53 is fixedly connected to the extended end of the column-side friction plate 51 by a high-strength bolt 55, and the other end of the dissipative plate 53 is fixedly connected to the extended end of the beam-side friction plate 52 by another high-strength bolt 55.
The middle part of the energy consumption plate 52 is uniformly provided with a plurality of strip-shaped holes, and the long axis direction of the strip-shaped holes is consistent with the axis direction of the energy consumption plate 52; the strip-shaped holes are formed in the energy dissipation plates 52, so that the energy dissipation plates 52 are partially weakened, the deformation capacity of the energy dissipation plates 52 is improved, a large amount of seismic energy can be absorbed, the beam-column structure is subjected to less seismic action, the beam-column member is protected, and the overall anti-seismic performance of the structure is improved.
One end of the energy dissipation plate 52 is provided with a first fixing hole, and the other end is provided with a second fixing hole; a first bolt hole is formed in the extending end of the column-side friction plate 51, and the first bolt hole is matched with the first fixing hole; the extending end of the beam side friction plate 53 is provided with a second bolt hole, and the second bolt hole is matched with the second fixing hole; one of the bolts sequentially penetrates through the first fixing hole of the energy dissipation plate 52 and the first bolt hole of the column-side friction plate 51, and fixedly connects the column-side friction plate 51 and the energy dissipation plate 52 together; another bolt penetrates through the second fixing hole of the energy dissipation plate 52 and the second bolt hole of the beam side friction plate 53 in sequence, and the beam side friction plate 53 and the energy dissipation plate 52 are fixedly connected together.
The construction method of the beam-column energy-consuming connecting member in this embodiment 2 is basically the same as that of the beam-column energy-consuming connecting member in embodiment 1, and details are not repeated here.
The beam-column energy-consumption connecting piece in embodiment 2 is used for connecting the prefabricated beam column, and has the functions of replacement and self-resetting, so as to meet the requirements of building design and construction; under the action of earthquake load, large amount of energy is dissipated by utilizing the buckling energy consumption of the energy consumption plate; and under the action of the prestressed tendons, the aim of recovering to the initial state after the earthquake is fulfilled.
According to the utility model, a precast concrete column is adopted as the precast column, and a bolt through hole is formed in the position of a beam-column connecting node of the precast concrete and is used for penetrating through a high-strength bolt rod so as to connect connecting end plates on two sides of the precast column and a column side fixing plate; the prefabricated beam is a prefabricated concrete beam, and energy dissipation part mounting grooves are respectively formed in the top and the bottom of the prefabricated concrete beam, which are close to the beam end of the prefabricated column; the beam-end embedded plate is arranged on the vertical surface of the energy consumption piece mounting groove, and is connected with a beam-side friction plate in an energy consumption unit to realize connection with a beam-column energy consumption connecting piece; the beam end surface of the precast beam is also provided with a plurality of prestressed rib holes extending along the axial direction of the precast concrete beam, and each prestressed rib penetrates through the prestressed rib holes and is fixedly connected with the beam side end plate; the prefabricated beam column is connected through the high-strength bolt rod, when a large earthquake occurs, the design concept of 'strong joint and weak component' can be met, the plastic hinge is controlled at the position of the beam column energy-consumption connecting piece, the energy-consumption yielding of the beam column energy-consumption connecting piece is realized, the shock-absorbing effect is achieved, and meanwhile, the repair and the replacement after the earthquake are facilitated.
In the utility model, an anchoring hole is arranged on a connecting end plate in the energy-consuming connecting piece and is used for anchoring a prestressed tendon, and the connecting end plate is connected with a column end fixing plate and a high-strength bolt rod to realize the fixed connection with a prefabricated column; one part of the energy dissipation part is embedded at the beam end, and the other part of the energy dissipation part is welded with the end plate and is connected with the end plate through the energy dissipation plate and the bolt; the prestressed tendons are anchored on the beam-column energy-consumption connecting piece, and the method is different from the traditional method of directly anchoring on the prefabricated column and can be simultaneously suitable for connecting nodes at various positions; because the construction site environment is complex, the prestressed tendon can be tensioned on site and is often influenced, and the utility model can complete the tensioning of the prestressed tendon in a prefabrication factory, thereby ensuring the self-resetting capability of the member to the maximum extent.
According to the utility model, the connection mode belongs to an energy-consuming connecting piece, and the steel of the beam-column energy-consuming connecting piece has excellent energy-consuming performance and can provide enough bearing capacity in a small earthquake process so as to ensure the safety of a main body structure; in the process of major earthquake, the ductility of the earthquake-resistant energy-saving structure can be fully exerted to consume energy, so that the earthquake energy borne by an important structure is reduced, and the safety of the main structure is ensured to the maximum extent; by arranging the prestressed tendons, the prefabricated part can be restored to the initial state as far as possible after the earthquake under the action of the prestress, the self-resetting effect is achieved, and the residual deformation is reduced; meanwhile, the replacement or maintenance after the earthquake is convenient; the traditional self-resetting mainly depends on the prestressed tendon to bear bending moment and shearing force, stress loss is easy to occur after deformation, and the bearing capacity is reduced; meanwhile, the back-welded steel plate can be used as a shear-resistant steel plate, a back plate installation notch is formed in the beam end of the precast beam, the back-welded steel plate is installed at the back plate installation notch, the back-welded steel plate and concrete at the back plate installation notch can effectively share bending moment and shearing force of the prestressed tendons, stress loss of the prestressed tendons is reduced, shear-resistant bearing capacity and residual deformation resistance of the node are greatly improved, and the node can still keep a good self-resetting effect after an earthquake occurs.
The beam column energy-consuming connecting piece can be completely hidden under a building finish surface, and cannot affect the construction after the building and the aesthetic degree of the structure.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (9)
1. The beam-column energy-consumption connecting piece is characterized in that the energy-consumption connecting piece is arranged at a connecting node of a prefabricated column (1) and a prefabricated beam (2); the energy consumption connecting piece comprises a connecting end plate (3), two energy consumption units (5) and a prestressed tendon (8); the connecting end plate (3) is vertically arranged at a connecting node of the precast beam (1) and the precast column (2), one side of the connecting end plate (3) is fixed with the side wall of the precast column (1), and the other side of the connecting end plate is fixed with the beam end of the precast beam (2);
energy dissipation piece mounting grooves (21) are symmetrically formed in the upper portion and the lower portion of the beam end of the precast beam (2), and the two energy dissipation units (5) are respectively arranged in the upper energy dissipation piece mounting groove (21) and the lower energy dissipation piece mounting groove (21); one end of the energy consumption unit (5) is fixedly connected with the connecting end plate (3), and the other end of the energy consumption unit is fixed with the beam end face of the precast beam (2); the prestressed tendons (8) are arranged between the beam ends of the connecting end plates (3) and the precast beams (2), one ends of the prestressed tendons (8) are fixedly inserted into the precast beams (2), and the other ends of the prestressed tendons penetrate through the connecting end plates (3) and are anchored on the connecting end plates (3) through bolts.
2. The beam-column energy-consumption connecting piece as claimed in claim 1, wherein a back-welded steel plate (31) is arranged at the anchoring point of the prestressed tendon (8) and the connecting end plate (3), and the back-welded steel plate (31) is arranged close to one side of the precast beam (2); the beam end of the precast beam (2) is provided with a back plate installation gap (22), and the back welding steel plate (31) is arranged in the back plate installation gap (22) in a matching manner; one side of the back-welding steel plate (31) is welded and fixed with the connecting end plate (3), the other side of the back-welding steel plate is tightly attached to the back plate installation notch (22), and the prestressed tendons (8) penetrate through the back-welding steel plate (31).
3. The beam-column energy-consumption connecting piece as claimed in claim 1, wherein the two energy-consumption units (5) are identical in structure, each energy-consumption unit (5) comprises two vertically parallel energy-consumption modules, and the two energy-consumption modules are symmetrically arranged along the central line of the width direction of the precast beam (2);
each energy consumption module comprises a column side friction plate (51), two energy consumption plates (52) and a beam side friction plate (53), wherein the column side friction plate (51) is vertically fixed on the connecting end plate (3) and horizontally extends towards one side of the precast beam (2); the beam side friction plate (53) is vertically fixed on the vertical surface of the energy consumption piece mounting groove (21) and horizontally extends towards one side of the prefabricated column (1); the two energy dissipation plates (52) are symmetrically arranged on two sides of the column side friction plate (51) and the beam side friction plate (53), one end of each energy dissipation plate (52) is fixedly connected with the extending end of the column side friction plate (51) through a bolt, and the other end of each energy dissipation plate (52) is fixedly connected with the extending end of the beam side friction plate (52) through a bolt.
4. The beam-column energy-consumption connecting piece according to claim 3, wherein the extending ends of the column-side friction plate (51) and the beam-side friction plate (53) are provided with arc-shaped notches, and the arc-shaped notches are arranged close to one side of the center of the connecting joint.
5. A beam-column energy-dissipating connecting piece according to claim 3, wherein the energy-dissipating plate (52) is provided with a first hole and a second hole; the first pore channel and the second pore channel are arranged in the direction far away from the center of the connecting node, and the first pore channel and the second pore channel are intersected and communicated at the center line position of the energy consumption plate (52);
the extending end of the column side friction plate (51) is provided with a first bolt hole, and the first bolt hole is matched with the first pore channel; the extending end of the beam side friction plate (53) is provided with a second bolt hole, and the second bolt hole is matched with the second pore channel;
one bolt penetrates through a first hole channel of the energy dissipation plate (52) and a first bolt hole of the column side friction plate (51) in sequence, and the column side friction plate (51) and the energy dissipation plate (52) are fixedly connected together; and the other bolt penetrates through a second hole of the energy dissipation plate (52) and a second bolt hole of the beam side friction plate (53) in sequence to fixedly connect the beam side friction plate (53) and the energy dissipation plate (52).
6. The beam-column energy-consumption connecting piece as claimed in claim 3, wherein the middle part of the energy-consumption plate (52) is uniformly provided with a plurality of strip-shaped holes, and the long axis direction of the strip-shaped holes is consistent with the axial direction of the energy-consumption plate (52);
one end of the energy consumption plate (52) is provided with a first fixing hole, and the other end of the energy consumption plate is provided with a second fixing hole; the extending end of the column side friction plate (51) is provided with a first bolt hole, and the first bolt hole is matched with the first fixing hole; the extending end of the beam side friction plate (53) is provided with a second bolt hole, and the second bolt hole is matched with the second fixing hole; one bolt sequentially penetrates through the first fixing hole of the energy dissipation plate (52) and the first bolt hole of the column side friction plate (51) to fixedly connect the column side friction plate (51) and the energy dissipation plate (52) together; and the other bolt penetrates through the second fixing hole of the energy dissipation plate (52) and the second bolt hole of the beam side friction plate (53) in sequence to fixedly connect the beam side friction plate (53) and the energy dissipation plate (52) together.
7. The beam-column energy-consumption connecting piece as claimed in claim 3, wherein the vertical surface of the energy-consumption piece mounting groove (21) is provided with a beam-end embedded plate (54), one side of the beam-end embedded plate (54) is vertically fixed with the beam-side friction plate (53), and the other side of the beam-end embedded plate is fixedly connected with the beam inner longitudinal rib (24) in the precast beam (2).
8. A beam-column energy-consuming connection according to claim 1, further comprising a column-side fixing plate (4); the column side fixing plates (4) are arranged on the side walls of the prefabricated columns (1) and are vertically parallel to and symmetrically arranged with the connecting end plates (3); the column side fixing plate (4) and the connecting end plate (3) are fixedly connected together through a high-strength bolt rod (6); the high-strength bolt rod (6) horizontally penetrates through the prefabricated column (1), one end of the high-strength bolt rod (6) is fixedly connected with the column side fixing plate (4), and the other end of the high-strength bolt rod is fixedly connected with the connecting end plate (3).
9. A beam-column energy-consuming connecting piece according to claim 8, characterized in that the space between the column-side fixing plate (4) and/or the connecting end plate (3) and the side wall of the prefabricated column (1) is filled with a grouting layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011190.5U CN215715983U (en) | 2021-08-24 | 2021-08-24 | Beam column energy consumption connecting piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011190.5U CN215715983U (en) | 2021-08-24 | 2021-08-24 | Beam column energy consumption connecting piece |
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| CN215715983U true CN215715983U (en) | 2022-02-01 |
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| CN202122011190.5U Active CN215715983U (en) | 2021-08-24 | 2021-08-24 | Beam column energy consumption connecting piece |
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| CN (1) | CN215715983U (en) |
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