CN221321348U - TMD installs auxiliary structure at steel truss - Google Patents
TMD installs auxiliary structure at steel truss Download PDFInfo
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- CN221321348U CN221321348U CN202323223048.2U CN202323223048U CN221321348U CN 221321348 U CN221321348 U CN 221321348U CN 202323223048 U CN202323223048 U CN 202323223048U CN 221321348 U CN221321348 U CN 221321348U
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- steel truss
- steel
- tmd
- cross beam
- mass damper
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses an installation auxiliary structure of a TMD (thermal mechanical device) on a steel truss, wherein the bottoms of tuning mass dampers are respectively connected with two hanging frames which are arranged in parallel through springs, the tuning mass dampers are positioned in the middle of a lower cross beam of each hanging frame, auxiliary strips are further arranged between the two hanging frames, the auxiliary strips are fixedly arranged between the two hanging frames, the auxiliary strips are arranged on two sides of each tuning mass damper, and the tops of the auxiliary strips are connected with the side wall of the tuning mass damper which is closest to the top of the auxiliary strips; through the setting that adopts the bottom end rail can effectually guarantee to tune the quality attenuator and exist sufficient mounted position in steel truss system, can effectually guarantee its sufficient service strength through the setting of longeron and entablature to the setting through the entablature can make gallows and the junction surface of steel truss system bigger.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to an auxiliary structure for installing TMD on a steel truss.
Background
When the self-vibration frequency of the structure is close to the walking frequency of people, the movement of dense people on the floor can possibly cause the resonance of the structure, the vertical vibration of the floor can exceed the acceptable degree of the people, and although the strength of the structure meets the requirement, the strength damage cannot occur, the vibration amplitude of the acceleration caused by the resonance of the structure is overlarge and exceeds the tolerance limit of the comfort level of the human body, the structure is extremely easy to cause panic on the psychology of the people, if the structure is increased in cross section and changed in structure type, the structure type is unreasonable and unrealistic from the aspects of technology, economy and space utilization, and the TMD vibration reduction technology is a novel technology capable of effectively reducing the vibration reaction of the structure.
TMD (tuned mass damper) is relatively large in size and weight and is usually mounted on flanges or webs of H-section steel, while box girders of steel trusses are difficult to mount, so that a mounting structure which is safe and reliable on the steel trusses and is simple to construct is required.
Disclosure of utility model
The utility model aims to provide an auxiliary structure for installing TMD on a steel truss, which can assist the installation of TMD.
The technical aim of the utility model is realized by the following technical scheme: the TMD mounting auxiliary structure comprises a tuning mass damper mounted on the bottom surface of a steel truss upper chord steel girder, wherein the tuning mass damper is connected with the steel truss upper chord steel girder through at least two hangers; the hanging bracket comprises a lower cross beam, longitudinal beams are symmetrically arranged at two ends of the top surface of the lower cross beam, the axial direction of each longitudinal beam is perpendicular to the top surface of the corresponding longitudinal beam, an upper cross beam is fixedly arranged at the top end of each longitudinal beam, and the top surface of each upper cross beam is connected with the bottom surface of the steel truss upper chord steel beam; the bottom of tuning mass damper respectively with two parallel arrangement the gallows pass through spring coupling, and tuning mass damper is located the middle part of the bottom beam of gallows, two still be provided with the assistance strip between the gallows, the assistance strip is fixed to be set up between two gallows and both sides of tuning mass damper all are provided with the assistance strip, and the top of assistance strip is rather than the lateral wall connection of the tuning mass damper that is closest.
Through the setting that adopts the bottom end rail can effectually guarantee to tune the quality attenuator and exist sufficient mounted position in steel truss system, can effectually guarantee its sufficient service strength through the setting of longeron and entablature to the setting through the entablature can make gallows and the junction surface of steel truss system bigger.
The utility model is further provided with: the longitudinal beam, the upper cross beam and the lower cross beam are all I-steel.
The convenience of raw materials can be guaranteed to the greatest extent through adopting the I-steel bar, the metal tolerance strength of the I-steel in all aspects is high, the I-steel is a very preferable material, and the connecting surface of the I-steel is more than the welding points of the steel tube and the steel bar, the welding is more convenient, the strength after the welding is more stable, and a stable hanging bracket can be manufactured without special welders.
The utility model is further provided with: the length of the lower cross beam is 1500mm.
The TMD is adopted to be MD, 2.0 and 1500, the length-width-height dimension is 1200mmx900mmx450mm, and the weight is 1.5t, so that the lower cross beam is required to be adaptively lengthened under the condition of meeting practical requirements.
The utility model is further provided with: the length of the longitudinal beam is 1000mm.
The stringers were chosen to be 1000mm in order to accommodate the TMD chosen in the installation scheme.
The utility model is further provided with: the distance between two adjacent upper cross beams on the same bracket is the width of the steel truss upper chord steel beam.
Because the steel girder model of each steel truss system is not unified, the width of the steel truss upper chord steel girder is measured and is adapted to the installation position of the upper cross beam.
The utility model is further provided with: the length of the auxiliary strip is 150mm, the width is 25mm, and the height is 10mm.
The unbalanced pressure of the spring at the bottom of the tuned mass damper caused by excessive shaking during hoisting can be effectively solved by adopting the auxiliary strip, and the permanent metal fatigue of the spring is prevented.
The utility model is further provided with: the distance between two sides of the tuning mass damper and the nearest longitudinal beam is not smaller than 50mm.
In order to prevent the tuned mass damper from being damaged by colliding with the cross beam when the tuned mass damper shakes during hoisting.
In summary, the utility model has the following beneficial effects: through the setting that adopts the bottom end rail can effectually guarantee to tune the quality attenuator and exist sufficient mounted position in steel truss system, can effectually guarantee its sufficient service strength through the setting of longeron and entablature to the setting through the entablature can make gallows and the junction surface of steel truss system bigger.
Drawings
FIG. 1 is an elevation view of a tuned mass damper mounted within a truss in an embodiment of the utility model;
figure 2 is a side view of a tuned mass damper mounted within a truss in an embodiment of the utility model.
In the figure:
1. Tuning a mass damper;
2. a hanging bracket; 21. a lower cross beam; 22. a longitudinal beam; 23. an upper cross beam;
3. And (5) winding the steel girder on the steel truss.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
Examples
TMD (tuned mass damper 1) is large in size and weight and is usually mounted on flanges or webs of H-section steel, while box girders of steel trusses are difficult to mount, so that a mounting structure which is safe and reliable on steel trusses and is simple to construct is required.
As shown in fig. 1 and 2, the TMD mounting auxiliary structure comprises a tuning mass damper 1 mounted on the bottom surface of a steel truss upper chord steel beam 3, wherein the tuning mass damper 1 is connected with the steel truss upper chord steel beam 3 through at least two hangers 2; the hanger 2 comprises a lower cross beam 21, longitudinal beams 22 are symmetrically arranged at two ends of the top surface of the lower cross beam 21, the axial direction of each longitudinal beam 22 is perpendicular to the top surface of each longitudinal beam 22, an upper cross beam 23 is fixedly arranged at the top end of each longitudinal beam 22, and the top surface of each upper cross beam 23 is connected with the bottom surface of the steel truss upper chord steel girder 3; the bottoms of the tuning mass dampers 1 are respectively connected with two parallel hanging frames 2 through springs, the tuning mass dampers 1 are positioned in the middle of a lower cross beam 21 of each hanging frame 2, an auxiliary strip is further arranged between the two hanging frames 2, the auxiliary strip is fixedly arranged between the two hanging frames 2, auxiliary strips are arranged on two sides of the tuning mass dampers 1, and the tops of the auxiliary strips are connected with the side wall of the tuning mass damper 1 closest to the top of the auxiliary strips.
The setting of bottom end rail 21 can effectually guarantee that tuning mass damper 1 exists sufficient mounted position in the steel truss system, can effectually guarantee its sufficient service strength through longeron 22 and the setting of entablature 23 to the setting through entablature 23 can make gallows 2 and the junction surface of steel truss system bigger.
As preferable: the longitudinal beam 22, the upper cross beam 23 and the lower cross beam 21 are all I-shaped steel, convenience in raw material acquisition can be guaranteed to the greatest extent through adopting I-shaped steel bars, the metal tolerance strength of the I-shaped steel in all aspects is high, the I-shaped steel is a very preferable material, and the connecting surface of the I-shaped steel is more in welding points compared with steel pipes and steel bars, more convenient and rapid to weld, more stable in strength after welding, and stable in hanger 2 can be manufactured without special welders.
As preferable: the TMD is MD, 2.0 and 1500, and the length-width-height dimension is 1200mmx900mmx450mm, and the weight is 1.5t, so that the length of the adaptively lengthened lower beam 21 of the lower beam 21 is 1500mm when the practical requirement is met.
As preferable: the stringers 22 are selected to be 1000mm in order to accommodate the TMD selected in the installation scheme.
The distance between two adjacent upper cross beams 23 on the same bracket is the width of the steel truss upper chord steel beam 3, and the width of the steel truss upper chord steel beam 3 is measured and then the installation position of the upper cross beams 23 is adaptively adjusted because the steel beam model of each steel truss system is not uniform.
The length of the auxiliary strip is 150mm, the width is 25mm, and the height is 10mm.
The unbalanced pressure of the spring at the bottom of the tuned mass damper 1 caused by excessive shaking during hoisting can be effectively solved through the arrangement of the auxiliary strips, permanent metal fatigue of the spring is prevented, and the auxiliary strips are required to be disassembled after hoisting is completed.
In order to prevent the tuned mass damper 1 from damaging the tuned mass damper 1 by colliding with the cross beam when the tuned mass damper 1 shakes during hoisting, the distance between two sides of the tuned mass damper 1 and the nearest longitudinal beam 22 is not less than 50mm, the arrangement of the lower cross beam 21 can effectively ensure that the tuned mass damper 1 has enough installation positions in a steel truss system, the arrangement of the longitudinal beam 22 and the upper cross beam 23 can effectively ensure enough use strength of the tuned mass damper, and the arrangement of the upper cross beam 23 can enable the connection surface of the hanger 2 and the steel truss system to be larger.
As preferable: in order to adapt to the partial truss system, a supporting rod is further arranged between the two hanging brackets 2 which are arranged in parallel, two ends of the supporting rod are respectively connected with the lower cross beams 21 of the two hanging brackets 2, and two ends of each lower cross beam 21 are respectively provided with the supporting rod.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (7)
1. An installation auxiliary structure of TMD at steel truss, characterized by: the tuning mass damper (1) is arranged on the bottom surface of the steel truss upper chord steel beam (3), and the tuning mass damper (1) is connected with the steel truss upper chord steel beam (3) through at least two hangers (2);
The hanger (2) comprises a lower cross beam (21), longitudinal beams (22) are symmetrically arranged at two ends of the top surface of the lower cross beam (21), the axial direction of each longitudinal beam (22) is perpendicular to the top surface of each longitudinal beam (22), an upper cross beam (23) is fixedly arranged at the top end of each longitudinal beam (22), and the top surface of each upper cross beam (23) is connected with the bottom surface of the steel truss upper chord steel beam (3);
The bottom of tuning quality attenuator (1) respectively with two parallel arrangement gallows (2) pass through spring coupling, and tuning quality attenuator (1) is located the middle part of the lower crossbeam (21) of gallows (2), two still be provided with between gallows (2) and assist the strip, assist the strip fixed setting between two gallows (2) and in both sides of tuning quality attenuator (1) all are provided with and assist the strip, and the top of assisting the strip is rather than the lateral wall connection of the tuning quality attenuator (1) that recently approaches.
2. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the longitudinal beam (22), the upper cross beam (23) and the lower cross beam (21) are all I-shaped steel.
3. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the length of the lower cross beam (21) is 1500mm.
4. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the longitudinal beam (22) has a length of 1000mm.
5. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the distance between two adjacent upper cross beams (23) on the same support is the width of the steel truss upper chord steel girder (3).
6. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the length of the auxiliary strip is 150mm, the width is 25mm, and the height is 10mm.
7. The TMD installation assisting structure in a steel truss according to claim 1, characterized in that: the distance between two sides of the tuning mass damper (1) and the nearest longitudinal beam (22) is not less than 50mm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221321348U true CN221321348U (en) | 2024-07-12 |
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