CN113338497B - Steel structure long tie bar segmented connecting device for horizontal support of inner and outer curtain walls - Google Patents
Steel structure long tie bar segmented connecting device for horizontal support of inner and outer curtain walls Download PDFInfo
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- CN113338497B CN113338497B CN202110646272.9A CN202110646272A CN113338497B CN 113338497 B CN113338497 B CN 113338497B CN 202110646272 A CN202110646272 A CN 202110646272A CN 113338497 B CN113338497 B CN 113338497B
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- sliding sleeve
- curtain wall
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
Abstract
The invention provides a steel structure long tie rod subsection connecting device for horizontal support of an inner curtain wall and an outer curtain wall, which is arranged between the inner curtain wall and the outer curtain wall and comprises a first rod, a second rod, a guide rod, a sliding sleeve, a first compression spring, a second compression spring and an end cover plate, wherein the other end of the guide rod is provided with an annular outer barrel ring and a central rod; when the tension is applied, the second compression spring is pressed, and the first compression spring does not work, so that the device can meet the requirement of differential deformation, and can effectively limit the tension deformation and the pressure deformation of the first rod and the second rod.
Description
Technical Field
The invention belongs to the technical field of engineering construction, and particularly relates to a steel structure long tie bar sectional connecting device for horizontal support of an inner curtain wall and an outer curtain wall.
Background
At present, the inner curtain wall structure and the outer curtain wall structure are applied more and more in the super high-rise building, the structure can provide a larger use space for the super high-rise building, and the inner curtain wall structure and the outer curtain wall structure are arranged at intervals, so that the building can obtain a better energy-saving environment-friendly effect, and the sound insulation, ventilation, indoor conditions and the like of the inner use space are improved.
In this kind of structural system of inside and outside curtain wall, the inboard curtain is connected with inside structure entity, and the outside curtain passes through horizontal tie rod and is connected with interior curtain wall. Along with the increase of the distance between two layers of curtain walls, because the outer curtain wall is influenced by environmental wind load, temperature load and dead weight, deformation different from that of the inner curtain wall occurs, if the outer curtain wall has larger deformation under the action of horizontal load, the horizontal tie bar has distortion or bending deformation, and considering that the outer curtain wall is hung on a structural main body essentially, in order to ensure the safety and the stability of the outer curtain wall, the outer curtain wall and the inner curtain wall need to be connected through the horizontal support tie bar or a floor slab, and along with the increase of the differential deformation of the inner curtain wall and the outer curtain wall, the horizontal support tie bar can be distorted or bent. Such distortion or bending deformation can lead to a state of buckling of the strut if under compression of the horizontal brace bars, with catastrophic consequences. At the same time, as the length of the rod increases, the buckling ratio increases, and the risk of instability also increases exponentially.
Disclosure of Invention
The invention aims to provide a steel structure long tie rod sectional connecting device for horizontal support of inner and outer curtain walls.
In order to solve the technical problems, the invention provides the following technical scheme:
a steel structure long tie rod subsection connecting device for horizontal support of an inner curtain wall and an outer curtain wall comprises a first rod, a second rod, a guide rod, a sliding sleeve, a first compression spring, a second compression spring and an annular end cover plate, wherein one end of the guide rod is coaxially connected with one end of the first rod, one end of the sliding sleeve is coaxially connected with one end of the second rod, the other end of the guide rod is provided with an annular outer cylinder ring and a central rod, the outer cylinder ring is coaxially arranged on the outer side of the central rod, an annular groove is formed between the central rod and the outer cylinder ring, the end cover plate is coaxially arranged on the end face, far away from the first rod, of the outer cylinder ring, the inner diameter of the end cover plate is smaller than that of the outer cylinder ring, a circular groove for the central rod to extend into is formed at the end, far away from the second rod, of the sliding sleeve, the end part of the sliding sleeve far away from the second rod extends into the annular groove of the guide rod, a first compression spring is arranged between the central rod and the bottom surface of the circular groove, the first compression spring is arranged close to the central rod, a retaining ring which is radially outward convex is arranged at the end part of the sliding sleeve far away from the second rod, the second compression spring is arranged in a space formed by the outer cylinder ring, the end cover plate, the sliding sleeve and the retaining ring, the second compression spring and the first compression spring are coaxial with the central rod, the outer diameter of the central rod is matched with the inner diameter of the circular groove of the sliding sleeve, the sliding sleeve can axially move relative to the guide rod, when the guide rod and the sliding sleeve are in a pressed state, the first compression spring is pressed, and the second compression spring does not work; when the guide rod and the sliding sleeve are in a pulled state, the second compression spring is pressed, and the first compression spring does not work.
Preferably, the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls further comprises four displacement meters, a base plate and a pressure sensor, wherein the pressure sensor is arranged between the bottom surface of the circular groove and the first compression spring, the base plate is arranged between the first compression spring and the pressure sensor, the four displacement meters are uniformly distributed around the axis of the central rod, two ends of each displacement meter are respectively connected with the guide rod and the sliding sleeve, two ends of each displacement meter are respectively parallel to the connecting line of the connecting parts of the guide rod and the sliding sleeve and the guide rod, and the four displacement meters and the pressure sensor are respectively in communication connection with an external control system.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls, when the first rod and/or the second rod are/is in a pressed state, the first compression spring is pressed to deform, the pressure P1 of the first compression spring is measured through the pressure sensor, the four displacement points respectively measure the displacements D1 to D4, the second compression spring is not stressed, and P2=0; when the first rod and/or the second rod are/is in a tensioned state, the second compression spring is compressed and deformed, the first compression spring is not stressed, P1=0, the four displacement meters respectively measure displacements D1-D4, the average value D of the displacements D1-D4 respectively measured by the four displacement meters is calculated, and the pressure P2 of the second compression spring is calculated through a formula P2= k x D, wherein k is the rigidity of the second compression spring.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls, a tension threshold value P2max and a pressure threshold value P1max are set in a control system, and when the first rod and/or the second rod are in a tension state, if P2> P2max, an alarm is given; when the first rod and/or the second rod are/is in a pressed state, if P1 is greater than P1max, an alarm is given, so that a method is provided for effectively evaluating the stressed states of the first rod and the second rod, an effective distinguishing and monitoring means is provided for solving the problem of pressure instability of the first rod and the second rod, powerful support is provided for controlling deformation change between the inner curtain wall and the outer curtain wall, and reliability and safety of connection between the inner curtain wall and the outer curtain wall are guaranteed.
Preferably, in the steel structure long tie bar segmental connection device for horizontal support of the inner and outer curtain walls, a curvature index threshold value theta is set in a control system max When the first rod and/or the second rod are/is in a compressed state, calculating an axial displacement value D5 of the sliding sleeve relative to the guide rod based on the pressure P1 of the first compression spring and the rigidity k of the first compression spring, wherein D5= P1/k; calculating differences D1 'to D4', D1'= D1-D5, D2' = D2-D5, D3'= D3-D5, D4' = D4-D5 of the displacements D1 to D4 and D5 obtained by the four displacement meters respectively as relative deformation values of the annular different positions relative to the central axial displacement D5; dividing the difference value of the relative deformation values on the symmetrical surfaces by the axial displacement value D5 of the sliding sleeve relative to the guide rod to obtain an absolute value as a bending index theta on the two symmetrical surfaces 13 、θ 24 ：
Taking the larger curvature index on the two symmetrical surfaces as an integral curvature index theta; if theta > theta max And then an alarm is given. The data measurement of 4 displacement meters is combined with the pressure measurement of the first compression spring 10, so that the quantitative evaluation and judgment can be carried out on the stable conditions of the first rod and the second rod under different pressure states, and the support is provided for the maintenance of the first rod and the second rod between the inner curtain wall and the outer curtain wall.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, the central rod is provided with a circumferential constraint key for limiting the guide rod and the sliding sleeve to rotate relative to each other, and the sliding sleeve is correspondingly provided with a key groove matched with the circumferential constraint key, so that the guide rod and the sliding sleeve can only coaxially move in the opposite direction or in the opposite direction relative to each other, and cannot rotate relative to each other.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, the circular groove is a stepped hole and comprises a first circular groove hole and a second circular groove hole which are sequentially arranged, the second circular groove hole is arranged close to the second rod hole, the inner diameter of the first circular groove hole is larger than that of the second circular groove hole, and the outer diameter of the central rod and the outer diameter of the first compression spring are both smaller than that of the second circular groove hole. Through setting circular recess for the ladder type hole to structure as above, weaken the cross-section of the second slotted hole that first compression spring is located, can feed back out the unstability state more easily.
Preferably, in the steel structure long tie bar segment connecting device for horizontal support of inner and outer curtain walls, the other end of the first rod is connected with the inner curtain wall or the outer curtain wall, and the other end of the second rod is connected with the outer curtain wall or the inner curtain wall.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, an end portion of the guide rod connected with the rod is designed to be reduced to form a first radially reduced section, that is, an outer diameter of the first radially reduced section is smaller than an outer diameter of the outer ring cylinder, an end portion of the rod connected with the guide rod is designed to be reduced radially to form a second radially reduced section, the first radially reduced section is provided with a through hole for the second radially reduced section to extend into, and the first radially reduced section and the second radially reduced section are fixedly connected. Through the end part reduction design of the connection of the guide rod and the first rod, a first radial reduction section is formed, namely, the cross section area of the connection part of the guide rod and the first rod is reduced, so that the instability state can be fed back more easily.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls, an antifriction sleeve is arranged on the circumferential wall of the circular groove of the sliding sleeve, the outer diameter of the central rod is matched with the inner diameter of the antifriction sleeve, and the resistance of the sliding sleeve and the guide rod to slide relatively can be reduced by arranging the antifriction sleeve.
According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:
the invention discloses a steel structure long tie bar segmented connecting device for horizontal support of an inner curtain wall and an outer curtain wall, which is arranged between the inner curtain wall and the outer curtain wall and comprises a first rod, a second rod, a guide rod, a sliding sleeve, a first compression spring, a second compression spring and an annular end cover plate, wherein one end of the guide rod is coaxially connected with one end of the first rod, one end of the sliding sleeve is coaxially connected with one end of the second rod, the other end of the guide rod is provided with an annular outer cylinder ring and a central rod, the outer cylinder ring is coaxially arranged at the outer side of the central rod, an annular groove is formed between the central rod and the outer cylinder ring, the end surface of the outer cylinder ring far away from the first rod is coaxially provided with the end cover plate, the inner diameter of the end cover plate is smaller than that of the outer cylinder ring, and the end part of the sliding sleeve far away from the second rod is provided with a circular groove for the central rod to extend into, the end part of the sliding sleeve far away from the second rod extends into the annular groove of the guide rod, a first compression spring is arranged between the central rod and the bottom surface of the circular groove, the first compression spring is arranged close to the central rod, a retaining ring which is radially outward convex is arranged at the end part of the sliding sleeve far away from the second rod, the second compression spring is arranged in a space formed by the outer cylinder ring, the end cover plate, the sliding sleeve and the retaining ring, the second compression spring and the first compression spring are coaxial with the central rod, the outer diameter of the central rod is matched with the inner diameter of the circular groove of the sliding sleeve, the sliding sleeve can axially move relative to the guide rod, when the guide rod and the sliding sleeve are in a pressed state, the first compression spring is pressed, and the second compression spring does not work; when the guide rod and the sliding sleeve are in a pulled state, the second compression spring is pressed, and the first compression spring does not work, so that the steel structure long tie rod subsection connecting device for the horizontal support of the inner curtain wall and the outer curtain wall can simultaneously limit the pulling deformation and the pressing deformation of the first rod and the second rod, the requirement of difference deformation can be met, meanwhile, the pulling deformation and the pressing deformation of the first rod and the second rod are effectively limited, and the unrecoverable large deformation is avoided.
Drawings
Fig. 1 is a structural schematic view of a steel structure long tie bar segment connecting device for horizontal support of an inner curtain wall and an outer curtain wall.
Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
In the figure: 1-rod I, 2-guide rod, 2.1-outer cylinder ring, 2.2-center rod, 3-cover ring, 4-second screw, 5-annular restraint key, 6-second compression spring, 7-end cover plate, 8-first screw, 9-antifriction sleeve, 10-first compression spring, 11-sliding sleeve, 11.1-first circular groove hole, 11.2 second circular groove hole, 11.3 retainer ring, 12-backing plate, pressure sensor 13, 14-rod II, 15-displacement meter.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Referring to fig. 1 to 2, the present embodiment discloses a steel structure long tie bar segment connecting device for horizontal support of an inner curtain wall and an outer curtain wall, which is disposed between the inner curtain wall and the outer curtain wall (not shown), wherein the inner curtain wall is connected with a structural entity inside a building, and the outer curtain wall is connected with the inner curtain wall through the steel structure long tie bar segment connecting device for horizontal support of the inner curtain wall and the outer curtain wall. The steel structure long tie rod subsection connecting device for the horizontal support of the inner curtain wall and the outer curtain wall comprises a first rod 1, a second rod 14, a guide rod 2, a sliding sleeve 11, a first compression spring 10, a second compression spring 6 and an annular end cover plate 7, wherein one end of the guide rod 2 is coaxially connected with one end of the first rod 1, one end of the sliding sleeve 11 is coaxially connected with one end of the second rod 14, the other end of the guide rod 2 is provided with an annular outer cylinder ring 2.1 and a central rod 2.2, the outer cylinder ring 2.1 is coaxially arranged at the outer side of the central rod 2.2, an annular groove is formed between the central rod 2.2 and the outer cylinder ring 2.1, the end cover plate 7 is coaxially arranged on the end surface of the outer cylinder ring 2.1, which is far away from the first rod 1, the end cover plate 7 is fixed on the end surface of the outer cylinder ring 2.1, which is far away from the first rod 1, and the inner diameter of the end cover plate 7 is smaller than the inner diameter of the outer cylinder ring 2.1, the end part of the sliding sleeve 11 far away from the second rod 14 is provided with a circular groove for the central rod 2.2 to extend into, the end part of the sliding sleeve 11 far away from the second rod 14 extends into the annular groove of the guide rod 2, a first compression spring 10 is arranged between the bottom surfaces of the central rod 2.2 and the circular groove, the first compression spring 10 is close to the central rod 2.2, the end part of the sliding sleeve 11 far away from the second rod 14 is provided with a retaining ring 11.3 protruding outwards along the radial direction, the second compression spring 6 is arranged in the space formed by the outer cylinder ring 2.1, the end cover plate 7, the sliding sleeve 11 and the retaining ring 11.3, the second compression spring 6 and the first compression spring 10 are coaxial with the central rod 2.2, the outer diameter of the central rod 2.2 is matched with the inner diameter of the circular groove of the sliding sleeve 11, the sliding sleeve 11 can axially move relative to the guide rod 2, when the guide rod 2 and the sliding sleeve 11 are in a compression state, the first compression spring 10 is compressed and the second compression spring 6 is inactive; when the guide rod 2 and the sliding sleeve 11 are in a pulled state, the second compression spring 6 is compressed, and the first compression spring 10 does not work, so that the steel structure long tie rod subsection connecting device for horizontally supporting the inner curtain wall and the outer curtain wall can simultaneously limit the pulling deformation and the pressing deformation of the first rod 1 and the second rod 14, the requirement of differential deformation can be met, meanwhile, the pulling deformation and the pressing deformation of the first rod 1 and the second rod 14 are effectively limited, and the unrecoverable large deformation is avoided.
Preferably, the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls further comprises four displacement meters 15, a backing plate 12 and a pressure sensor 13, the pressure sensor 13 is arranged between the bottom surface of the circular groove and the first compression spring 10, the backing plate 12 is arranged between the first compression spring 10 and the pressure sensor 13, the four displacement meters 15 are uniformly distributed around the axial lead of the central rod 2.2, that is, the four displacement meters 15 are arranged at 90 degrees, two ends of each displacement meter 15 are respectively connected with the guide rod 2 and the sliding sleeve 11, connecting lines at the connecting positions of the two ends of each displacement meter 15 and the guide rod 2 and the sliding sleeve 11 are parallel to the guide rod 2, and the four displacement meters 15 and the pressure sensor 13 are respectively in communication connection with an external control system. Can measure first compression spring 10's pressure P1 through pressure sensor 13, thereby can measure the pressurized degree between pole one 1 and pole two 14, can acquire first compression spring 10's pressure P2 through four displacement meters 15, thereby can measure the degree of pulling between pole one 1 and pole two 14, thereby be favorable to the control to connection status between pole one 1 and the pole two 14, improve in, the reliability of connecting between the outer curtain wall, in the realization, the connection risk early warning between the outer curtain wall, prevent to take place outer curtain wall and appear the high altitude risk of falling.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls, when the first rod 1 and/or the second rod 14 are/is in a compressed state, the first compression spring 10 is compressed and deformed, the pressure P1 of the first compression spring 10 is measured by the pressure sensor 13, the displacements D1 to D4 are respectively measured by the four displacement meters 15, the second compression spring 6 is not stressed, and P2=0; when the first rod 1 and/or the second rod 14 are/is in a tensioned state, the second compression spring 6 is compressed and deformed, the first compression spring 10 is not stressed, P1=0, the four displacement meters 15 respectively measure displacements D1 to D4, an average value D of the displacements D1 to D4 respectively measured by the four displacement meters 15 is calculated, and a pressure P2 of the second compression spring 6 is calculated by a formula P2= k × D, wherein k is the stiffness of the second compression spring 6.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of the inner and outer curtain walls, a tension threshold value P2max and a pressure threshold value P1max are set in a control system, and when the first rod 1 and/or the second rod 14 are in a tension state, if P2> P2max, an alarm is given; when the first rod 1 and/or the second rod 14 are/is in a pressed state, if P1 is greater than P1max, an alarm is given, so that the connection risk between the first rod 1 and the second rod 14 is found in time, the reliability and stability of connection between the inner curtain wall and the outer curtain wall are ensured, and the outer curtain wall is prevented from high-altitude falling risk.
Preferably, in the steel structure long tie bar segment connecting device for horizontal support of inner and outer curtain walls, a curvature index threshold θ is set in a control system max When the first rod 1 and/or the second rod 14 are/is in a pressed state, calculating an axial displacement value D5 of the sliding sleeve 11 relative to the guide rod 2 based on the pressure P1 of the first compression spring 10 and the stiffness k of the first compression spring 10, wherein D5= P1/k; calculating the difference values D1 '~ D4', D1'= D1-D5, D2' = D2-D5, D3'= D3-D5, D4' = D4-D5 of the displacements D1-D4 and D5 measured by the four displacement meters 15 respectively, and taking the difference values as relative deformation values of the annular different positions relative to the central axial displacement D5; dividing the difference of the relative deformation values on the symmetry plane by the axial displacement value D5 of the sliding sleeve 11 relative to the guide rod 2 to obtain an absolute value as a curvature index theta on the two symmetry planes 13 、θ 24 ：
Taking the larger curvature index on the two symmetrical surfaces as an integral curvature index theta; if theta > theta max And then, alarming is carried out, so that the distortion risk between the first rod 1 and the second rod 14 is found in time, the reliability and the stability of connection between the inner curtain wall and the outer curtain wall are ensured, and further, the risk of falling from the outer curtain wall at high altitude is prevented.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, the central rod 2.2 is provided with a circumferential constraint key 5 for limiting the guide rod 2 and the sliding sleeve 11 to rotate relative to each other, and the sliding sleeve 11 is correspondingly provided with a key groove matched with the circumferential constraint key 5, so that the guide rod 2 and the sliding sleeve 11 can only move back to back or towards each other along the axial direction of the sliding sleeve 11.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of internal and external curtain walls, the circular groove is a stepped hole, and includes a first circular groove hole 11.1 and a second circular groove hole 11.2 which are sequentially arranged, the second circular groove hole 11.2 is arranged near the second rod 14, the inner diameter of the first circular groove hole 11.1 is larger than the inner diameter of the second circular groove hole 11.2, and both the outer diameter of the central rod 2.2 and the outer diameter of the first compression spring 10 are smaller than the inner diameter of the second circular groove hole 11.2. By reducing the inner diameter of the second circular slot 11.2 in which the first compression spring 10 is located, the unstable state can be fed back more easily.
Preferably, in the steel structure long tie bar segment connecting device for horizontal support of inner and outer curtain walls, the other end of the first rod 1 is connected with the inner curtain wall or the outer curtain wall, and the other end of the second rod 14 is connected with the outer curtain wall or the inner curtain wall.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, an end portion of the guide rod 2 connected with the rod one 1 is radially reduced to form a first radially reduced section, an end portion of the rod one 1 connected with the guide rod 2 is radially reduced to form a second radially reduced section, the first radially reduced section is provided with a through hole for the second radially reduced section to extend into, and the first radially reduced section and the second radially reduced section are fixedly connected. Through the radial reduction design of the end part of the guide rod 2 connected with the rod I1, the cross-sectional area of the part of the guide rod 2 connected with the rod I1 is reduced, and the instability state can be fed back more easily.
Preferably, in the steel structure long tie rod segment connecting device for horizontal support of inner and outer curtain walls, an antifriction sleeve 9 is arranged on the circumferential wall of the circular groove of the sliding sleeve 11, the outer diameter of the central rod 2.2 is matched with the inner diameter of the antifriction sleeve 9, the antifriction sleeve 9 is fixed on the circumferential wall of the circular groove of the sliding sleeve 11 through the cover ring 3 and the second screw 4, and the sliding resistance between the sliding sleeve 11 and the guide rod 2 can be reduced by arranging the antifriction sleeve 9.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (8)
1. A steel structure long tie bar segmented connecting device for horizontal support of inner and outer curtain walls is arranged between the inner curtain wall and the outer curtain wall and is characterized by comprising a first rod, a second rod, a guide rod, a sliding sleeve, a first compression spring, a second compression spring and an annular end cover plate, wherein one end of the guide rod is coaxially connected with one end of the first rod, one end of the sliding sleeve is coaxially connected with one end of the second rod, the other end of the guide rod is provided with an annular outer cylinder ring and a central rod, the outer cylinder ring is coaxially arranged on the outer side of the central rod, an annular groove is formed between the central rod and the outer cylinder ring, the end surface, far away from the first rod, of the outer cylinder ring is coaxially provided with the end cover plate, the inner diameter of the end cover plate is smaller than that of the outer cylinder ring, and the end, far away from the second rod, of the sliding sleeve is provided with a circular groove for the central rod to extend into, the end part of the sliding sleeve far away from the second rod extends into the annular groove of the guide rod, a first compression spring is arranged between the central rod and the bottom surface of the circular groove, the first compression spring is arranged close to the central rod, a retaining ring which is radially outward convex is arranged at the end part of the sliding sleeve far away from the second rod, the second compression spring is arranged in a space formed by the outer cylinder ring, the end cover plate, the sliding sleeve and the retaining ring, the second compression spring and the first compression spring are coaxial with the central rod, the outer diameter of the central rod is matched with the inner diameter of the circular groove of the sliding sleeve, the sliding sleeve can axially move relative to the guide rod, when the guide rod and the sliding sleeve are in a pressed state, the first compression spring is pressed, and the second compression spring does not work; when the guide rod and the sliding sleeve are in a pulled state, the second compression spring is pressed, and the first compression spring does not work; the four displacement meters are uniformly distributed around the axis of the central rod, two ends of each displacement meter are respectively connected with the guide rod and the sliding sleeve, two ends of each displacement meter are respectively parallel to the guide rod with the connecting line of the connecting part of the guide rod and the sliding sleeve, and the four displacement meters and the pressure sensors are respectively in communication connection with an external control system; the central rod is provided with an annular restraining key for limiting the guide rod and the sliding sleeve to rotate mutually, and the sliding sleeve is correspondingly provided with a key groove matched with the annular restraining key.
2. The steel structure long tie bar segmental connection device for the horizontal support of the inner and outer curtain walls as claimed in claim 1, wherein when the first rod and/or the second rod are/is in a compressed state, the first compression spring is compressed and deformed, the pressure P1 of the first compression spring is measured by a pressure sensor, the displacements D1-D4 are measured by four displacement meters, the second compression spring is not stressed, and P2=0; when the first rod and/or the second rod are/is in a tensioned state, the second compression spring is compressed and deformed, the first compression spring is not stressed, P1=0, the four displacement meters respectively measure displacements D1-D4, the average value D of the displacements D1-D4 measured by the four displacement meters is calculated, and the pressure P2 of the second compression spring is calculated through a formula P2= k x D, wherein k is the rigidity of the second compression spring.
3. The steel structure long tie bar segment connecting device for the horizontal support of the inner curtain wall and the outer curtain wall as claimed in claim 2, wherein a tension threshold value P2max and a pressure threshold value P1max are set in a control system, and when the first rod and/or the second rod are in a tension state, if P2> P2max, an alarm is given; when the first rod and/or the second rod are in a pressed state, if P1> P1max, an alarm is given.
4. The steel structure long tie bar segmental connection device for horizontal support of inner and outer curtain walls as claimed in claim 2, wherein a curvature index threshold θ is set in a control system max When the first rod and/or the second rod are/is in a pressed state, calculating an axial displacement value D5 of the sliding sleeve relative to the guide rod based on the pressure P1 of the first compression spring and the rigidity k of the first compression spring, wherein D5= P1/k; calculating differences D1 'to D4', D1'= D1-D5, D2' = D2-D5, D3'= D3-D5, D4' = D4-D5 of the displacements D1 to D4 and D5 obtained by the four displacement meters respectively as relative deformation values of the annular different positions relative to the central axial displacement D5; dividing the difference value of the relative deformation values on the symmetrical surfaces by the central axial displacement value D5 of the sliding sleeve relative to the guide rod to obtain an absolute value as a curvature index theta on the two symmetrical surfaces 13 、θ 24 ：
Taking the larger curvature index on the two symmetrical surfaces as an integral curvature index theta; if theta > theta max And then an alarm is given.
5. The steel structure long tie bar segmental connection device for horizontal support of inner and outer curtain walls as claimed in claim 1, wherein the circular groove is a stepped hole comprising a first circular groove hole and a second circular groove hole arranged in sequence, the second circular groove hole is arranged close to the second rod hole, the inner diameter of the first circular groove hole is larger than that of the second circular groove hole, and the outer diameter of the central rod and the outer diameter of the first compression spring are both smaller than that of the second circular groove hole.
6. The steel structure long tie bar segmental connection device for horizontal support of inner and outer curtain walls as claimed in claim 1, wherein the other end of the first rod is connected with the inner curtain wall or the outer curtain wall, and the other end of the second rod is connected with the outer curtain wall or the inner curtain wall.
7. The steel structure long tie bar segmental connection device for horizontal support of inner and outer curtain walls as claimed in claim 1, wherein the end part of the guide rod connected with the first rod is designed to be radially reduced to form a first radially reduced section, the end part of the first rod connected with the guide rod is designed to be radially reduced to form a second radially reduced section, the first radially reduced section is provided with a through hole for the second radially reduced section to extend into, and the first radially reduced section and the second radially reduced section are fixedly connected.
8. The steel structure long tie bar sectional connecting device for the horizontal support of the inner and outer curtain walls as claimed in claim 1, wherein a friction reducing sleeve is arranged on the circumferential wall of the circular groove of the sliding sleeve, and the outer diameter of the central rod is matched with the inner diameter of the friction reducing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646272.9A CN113338497B (en) | 2021-06-10 | 2021-06-10 | Steel structure long tie bar segmented connecting device for horizontal support of inner and outer curtain walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646272.9A CN113338497B (en) | 2021-06-10 | 2021-06-10 | Steel structure long tie bar segmented connecting device for horizontal support of inner and outer curtain walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113338497A CN113338497A (en) | 2021-09-03 |
| CN113338497B true CN113338497B (en) | 2022-10-14 |
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