CN114108946B - Spring damping energy dissipation vibration attenuation beam, roof system and construction method - Google Patents

Abstract

The invention discloses a spring damping energy-dissipation vibration-reduction beam string, a roof system and a construction method, belonging to the field of building engineering and comprising an upper beam string, damping stay bar assemblies and a stay cable, wherein two ends of the stay cable are respectively and correspondingly connected with two ends of the upper beam string, a tension area is formed between the stay cable and the upper beam string, and a plurality of damping stay bar assemblies are distributed in the tension area at intervals; wherein, damping vaulting pole subassembly is including connecting vaulting pole and the spring damper as an organic whole, and the upper chord roof beam is connected to vaulting pole one end, and the cable is connected to spring damper one end. The damping stay bar assembly can be lengthened through the stay bar in the mounting stage of the beam string structure, so that the tension of the stay rope is realized, and in the normal use stage, the spring damping energy dissipation and vibration reduction stay bar can dissipate vibration energy, reduce the amplitude of the stay rope, prevent the fatigue damage of the structure and improve the comfort of the beam string structure.

Description

Spring damping energy dissipation vibration attenuation beam, roof system and construction method

Technical Field

The invention relates to the field of constructional engineering, in particular to a spring damping energy-dissipation vibration-reduction beam string structure, a roof system and a construction method.

Background

The beam structure mainly comprises an upper beam, a stay bar and a lower stay cable, wherein the lower stay cable is made of high-strength steel strands. The tensioned lower chord stay cable supports the upper chord beam through the stay bar, so that the span and deformation of the upper chord beam are reduced, the bearing capacity of the upper chord beam is improved, and the material consumption is reduced. The structure is light and beautiful, and is mainly applied to large-span gymnasiums, exhibition halls, airport terminal buildings, waiting halls of railway stations, platform rainsheds and the like.

When the beam string structure is constructed and installed, the lower string stay cable is usually tensioned by a large tensioning jack, the requirement on equipment is high, the tensioning precision is difficult to control, and particularly for a large-span beam string structure, the stroke of the tensioning jack is large, and the equipment is more complicated. Meanwhile, the lower chord stay cable is of a flexible structure, and has large vibration amplitude under the action of wind and vibration load, so that the use performance and fatigue failure of the structure are influenced.

Disclosure of Invention

In order to overcome the technical problems, the invention provides a spring damping energy-consumption vibration-reduction beam string structure, a roof system and a construction method.

The technical scheme adopted for solving the technical problems is as follows:

a spring damping energy dissipation vibration attenuation beam comprises an upper beam, damping stay bar assemblies and stay ropes, wherein two ends of each stay rope are correspondingly connected with two ends of the upper beam respectively;

wherein, damping vaulting pole subassembly is including connecting vaulting pole and the spring damper as an organic whole, and the upper chord roof beam is connected to vaulting pole one end, and the cable is connected to spring damper one end.

Furthermore, the spring damper comprises a hydraulic oil cylinder, an oil inlet and an oil outlet are arranged on one side of the hydraulic oil cylinder at intervals, and a damping pipe is connected between the oil inlet and the oil outlet.

Furthermore, the damping pipe is installed and is blocked the valve, and the oil inlet installation oil inlet switch, oil-out installation oil-out switch are gone into to the oil inlet.

Furthermore, a first flange plate is arranged at the end part of the cylinder body of the hydraulic oil cylinder, the end part of a piston rod of the hydraulic oil cylinder is connected with an end plate, and a second flange plate is sleeved outside the piston rod; and a spring is connected between the second flange plate and the first flange plate.

Furthermore, the spring is sleeved on the rod section of the piston rod between the second flange plate and the end plate, and one or more springs are arranged.

Further, the spring is arranged in a plurality at intervals along the circumferential direction of the piston rod.

Furthermore, the first flange plate and the second flange plate can be connected through a tensioning bolt.

Furthermore, the stay bar is hinged with the upper chord beam, and the spring damper clamps the inhaul cable through a clamping plate node.

A spring damping energy dissipation vibration attenuation beam string roof system comprises a plurality of beam string beams, wherein adjacent beam string beams are connected through purlines.

A construction method of a spring damping energy dissipation vibration attenuation beam string comprises the following steps:

assembling an upper chord beam on the temporary support frame;

the damping brace rod components are connected at intervals along the length direction of the upper chord beam;

one end of a stay cable is connected with one end of the upper chord beam, the stay cable is sequentially connected with each damping stay rod assembly, and then the other end of the stay cable is connected with the other end of the upper chord beam;

firstly, adjusting the length of the middle damping stay bar component: the piston rod is extended by pressing hydraulic oil into the hydraulic oil cylinder, and the first flange plate and the second flange plate are connected through a tensioning bolt after the length requirement is met;

sequentially adjusting the lengths of the rest damping stay bar components, and fixing the rest damping stay bar components through tensioning bolts;

and (5) removing the temporary support frame.

The beneficial effects of the invention are:

(1) According to the invention, the damping stay bar assembly is arranged between the upper chord beam and the stay rope, so that the extension of the stay rope can be controlled in the construction stage, and the pretightening force is applied to the stay rope; in the using stage, the inhaul cable vibrates due to energy consumption and wind dissipation, earthquakes and other dynamic loads, the comfort of the beam string structure is improved, the amplitude of the inhaul cable is reduced, and the inhaul cable is prevented from being damaged due to fatigue; meanwhile, the structure damage caused by the loosening of the inhaul cable and the reduction of the cable force can be adjusted; when the temperature of the inhaul cable rises and expands to cause the cable force to be reduced, the spring of the spring damper extends to apply additional pretightening force to the inhaul cable to make up the reduction of the cable force.

(2) The extension of the piston rod is controlled through the hydraulic oil cylinder and the damping pipe, and switches are arranged on the damping pipe and oil inlet and outlet ports of the hydraulic oil cylinder, so that the damping size can be adjusted; and the end part of the piston rod is provided with a spring, so that the damping and energy consumption effects are realized; when the elongation meets the set requirement, the flange at the bottom of the cylinder body is fixed with the flange on the piston rod through the tensioning bolt, and the use requirement is met.

(3) During construction, damping stay bar assemblies are connected at intervals along the length direction of the upper chord beam, then one end of a stay cable is connected with one end of the upper chord beam, the stay cable is sequentially connected with the damping stay bar assemblies, and the other end of the stay cable is connected with the other end of the upper chord beam; and the length of the middle damping stay bar component is adjusted firstly, and then the lengths of the other damping stay bar components are adjusted, so that the installation stability of the upper chord beam structure is ensured through the construction sequence.

Drawings

FIG. 1 is a schematic view of a beam string according to the present invention before installation;

FIG. 2 is a schematic view of the beam string structure of the present invention after installation;

FIG. 3 (a) is a schematic view of the damping brace assembly of the present invention in a pre-extension state;

FIG. 3 (b) is a schematic diagram of the damping strut assembly according to the present invention in an extended state;

FIG. 4 (a) is a plan view of the spring disposed about the piston rod in accordance with the present invention;

FIG. 4 (b) is a plan view of the springs of the present invention disposed circumferentially about the flange;

FIG. 5 (a) is a front view of a single spring disposed about a piston rod in accordance with the present invention;

FIG. 5 (b) is a front view of the dual spring arrangement of the present invention around the piston rod;

FIG. 5 (c) is a front view of the springs of the present invention circumferentially disposed about the flange;

FIG. 6 is a schematic structural view of a beam string roof system according to the present invention;

FIG. 7 is a schematic view of a beam string according to the fifth embodiment;

8 (a) -8 (h) are diagrams of the tension cable stress state in the construction process of symmetrically extending the stay bar from left to right to the middle;

FIGS. 9 (a) -9 (h) are views showing the states of tension of the stay cables during construction of symmetrically extending the stay rods from the middle to both ends;

FIGS. 10 (a) -10 (h) are views showing states of tension cable stress during sequential stay rod extension from one end to the other;

FIG. 11 is a drawing of the tension cable stress variation for different tension sequences according to the present invention;

FIG. 12 is a schematic diagram of an ElCentro seismic wave of the present invention;

FIG. 13 is a deformation and stress diagram of the beam string of the present invention under the action of an earthquake;

FIG. 14 is a graph comparing the tension cable stress under the earthquake action of the invention and the traditional beam string;

FIG. 15 is a diagram comparing the vertical displacement of the guy cable span under the earthquake action of the traditional beam string.

The hydraulic support comprises an upper chord beam 1, an upper chord beam 2, a support rod 21, a connecting plate 22, a steel pipe body 23, a first end plate 3, a stay cable 4, a spring damper 41, a hydraulic oil cylinder 411, a second end plate 412, a first flange 42, a piston rod 421, a third end plate 422, a fourth end plate 43, a tensioning bolt 44, a spring 441, a second flange 442, a piston rod hole 45, a damping pipe 451, a blocking valve 46, an oil inlet 461, an oil inlet switch 47, an oil outlet 471, an oil outlet switch 48, a clamping plate node 481, a clamping plate 482, a pulley 49, a nut 5 and a purlin.

Detailed Description

The first embodiment is as follows:

the embodiment provides a string beam structure is opened in spring damping power consumption damping, as shown in fig. 1 and 2, including last string beam 1, damping vaulting pole subassembly and cable 3, connect cable 3 between the both ends of last string beam 1, set up a plurality of damping vaulting pole subassemblies along 3 length direction intervals of cable, damping vaulting pole subassembly is connected in the stretch-draw region that last string beam 1 and cable 3 formed.

Specifically, the damping stay bar assembly comprises a stay bar 2 and a spring damper 4, the stay bar 2 is a standard stay bar, one end of the stay bar 2 is hinged to the upper chord beam 1, and the other end of the stay bar 2 is connected with the spring damper 4. As shown in fig. 3 (a) and 3 (b), the stay 2 includes a steel pipe main body 22, a connecting plate 21 connected to one end of the steel pipe main body 22, and a first end plate 23 connected to the other end of the steel pipe main body 22, and the stay 2 is hinged to the upper chord 1 via the connecting plate 21 and connected to the spring damper 4 via the first end plate 23.

Further, the spring damper 4 includes a hydraulic oil cylinder 41, a piston rod 42, a tension bolt 43, and a spring 44, one end of the hydraulic oil cylinder 41 is connected to the second end plate 411, and the second end plate 411 is fixed (for example, welded and fixed) to the first end plate 23, so as to connect the spring damper 4 to the strut 2.

A first flange plate 412 is installed at one end, far away from a second end plate 411, of a cylinder body of the hydraulic oil cylinder 41, a piston rod 42 is arranged in the hydraulic oil cylinder 41, one end of the piston rod 42 is in contact with the inner wall of the cylinder body through a third end plate 421, and the third end plate 421 can move along the inner wall of the cylinder body. One end of the piston rod 42 extending out of the cylinder body is connected with a fourth end plate 422, and is connected with a clamping plate node through the fourth end plate 422, and the clamping plate node 48 is used for clamping the pull cable 3.

In the present embodiment, the cleat node 48 includes a cleat 481 and a pulley 482, the bottom of the fourth end plate 422 is connected to two spaced cleats 481, two pulleys 482 arranged up and down are installed between the two cleats 481, and a contact space for the cable 3 is formed between the two pulleys 482.

The extending end of the piston rod 42 passes through the second flange 441; after the requirement of extension of the piston rod 42 is met, the first flange plate 412 and the second flange plate 441 are connected through the tension bolts 43, and a plurality of tension bolts 43 are distributed at intervals along the circumferential direction of the first flange plate 412 and the second flange plate 441.

In the present embodiment, the tension bolt 43 can be fixed to the first flange 412 and the second flange 441 by the nut 49.

Further, a spring 44 is sleeved on the outer side of the rod end of the piston rod 42 between the second flange 441 and the fourth end plate 422. In this embodiment, the spring 44 may be wound on the outside of the piston rod 42 as a single piece as shown in fig. 5 (a); or may be wound around the outside of the piston rod 42 in two windings as shown in fig. 5 (b).

It is understood that in other embodiments, three or more springs 44 may be sleeved on the piston rod 42, specifically according to the connection requirement between the upper chord beam 1 and the cable 3.

As shown in fig. 4 (a), the second flange 441 is rectangular, but in other embodiments, the second flange 441 may be circular or have other shapes.

Further, the side wall of the hydraulic oil cylinder 41 is provided with an oil inlet 46 and an oil outlet 47, and the position of the oil inlet 46 is higher than that of the oil outlet 47. The oil inlet 46 and the oil outlet 47 of the present embodiment are both three-way pipes, the oil inlet 46 is used for connecting with an oil inlet pipe or an oil return pipe of the hydraulic oil pump, and is provided with an oil inlet switch 461; the oil outlet 47 is provided with an oil outlet switch 471.

A damping pipe 45 is connected between the oil inlet 46 and the oil outlet 47, and the length direction of the damping pipe 45 is consistent with the axial direction of the hydraulic oil cylinder 41; the damper tube 45 is fitted with a shutoff valve 451.

As shown in fig. 3 (a) and 3 (b), the extension process of the spring damper 4 is:

the spring damper 4 is in an initial state that the oil inlet 46 and the oil outlet 47 are both closed, the blocking valve 451 of the damping tube 45 is opened, the oil pressure in the hydraulic oil cylinder 41 is balanced, the piston rod 42 can freely extend and retract in the hydraulic oil cylinder 41, the first flange plate 412 and the second flange plate 441 are not connected through the tensioning bolt 43, and the spring damper 4 is in a freely-extending and retracting state.

When the spring damper 4 begins to stretch, the blocking valve 451 is closed, the oil inlet 46 and the oil outlet 47 are opened, the hydraulic oil pump feeds oil from the oil inlet 46, the piston rod 42 extends out of the oil cylinder 41, the inhaul cable 3 is pushed downwards to achieve stretching, after the stretching reaches the designed pre-tightening force, the hydraulic oil pump stops feeding oil, the hydraulic oil cylinder 41 is connected with the spring 44 through the tensioning bolt 43, the length of the tensioning bolt 43 is adjusted, the spring 44 is pressed until the hydraulic oil pressure in the hydraulic oil cylinder 41 is completely reduced to zero, and at the moment, the pressure borne by the spring damper 4 is completely borne by the hydraulic oil cylinder 41, the tensioning bolt 43 and the spring 44.

Then the oil inlet 46 and the oil outlet 47 are closed, the block valve 451 is opened, the hydraulic oil pump is removed, at the moment, the hydraulic oil in the hydraulic oil cylinder 41 flows from the hydraulic oil cylinder 41 at the upper end of the piston rod 42 to the hydraulic oil cylinder 41 at the lower end of the piston rod 42 through the damping pipe 45, and the oil pressure in the hydraulic oil cylinder 41 automatically reaches balance.

The second embodiment:

the present embodiment provides a spring damping dissipative vibration damping beam string structure, which is different from the first embodiment in the arrangement of the springs 44, as shown in fig. 4 (b) and fig. 5 (c), a plurality of springs 44 are connected between the second flange 441 and the fourth end plate 422, and four or more springs 44 are circumferentially distributed along the second flange 441.

Other structures are the same as those of the first embodiment, and are not described herein again.

Example three:

the embodiment provides a construction method of a spring damping energy dissipation vibration attenuation beam string, which adopts the beam string structure of the first embodiment or the second embodiment, and comprises the following steps:

A. and assembling the upper chord beam 1 on the temporary support frame.

B. The damping support rod assemblies are sequentially connected to corresponding positions of the upper chord beam 1, and the lengths and the bearing capacities of the damping support rod assemblies at different positions of the upper chord beam 1 are different.

C. One end of the inhaul cable 3 is connected with an inhaul cable node at one end of the upper chord beam 1, then the inhaul cable is sequentially connected with a clamping plate node 48 at the lower end of the spring damper 4, and finally the other end of the inhaul cable 3 is connected with an inhaul cable node at the other end of the upper chord beam 1.

D. And firstly constructing a damping support rod assembly at the middle position. The oil outlet pipe of the hydraulic oil pump is connected with the oil inlet 46, the oil inlet switch 461 is opened, and the switch connected with the damping pipe, namely the block valve 451 is in a closed state; the hydraulic oil pump return pipe is connected with the oil outlet 47, and the oil outlet switch 471 is opened, and the blocking valve 451 is in a closed state. The tension bolt 43 between the second flange 441 and the first flange 412 is loose, and cannot affect the extension and contraction of the piston rod 42.

E. The oil pump applies pressure, hydraulic oil is pressed into the oil cylinder 41, the piston rod 42 is pushed out, and the support rod extends; and synchronously monitoring the extension amount of the piston rod 42 and the output pressure of the hydraulic oil pump, stopping filling oil into the inner pressure of the oil cylinder 41 when the total length of the spring damper 4 reaches the designed length, and keeping the output pressure of the oil pump unchanged.

F. The tension bolt 43 between the second flange 441 and the first flange 412 is synchronously rotated, so that the spring 44 is compressed, the pressure borne by the piston rod 42 is gradually borne by the spring 44, and the output pressure of the hydraulic oil pump is gradually reduced. During the tightening of the tensioning screw 43, the extension of the piston rod 42 is synchronously monitored, and the overall length of the spring damper 4 is not changed. When the output pressure of the hydraulic oil pump is zero, it indicates that the pressure of the piston rod 42 is completely borne by the spring 44, the hydraulic cylinder 41, and the tension bolt 43 between the spring and the hydraulic cylinder 41. A nut 49 is installed on the back side of the first flange 412 and tightened to lock the length of the tension bolt 43.

G. The oil inlet switch 461 and the oil outlet 471 are closed, and the hydraulic oil pump 41 is removed. The block valve 451 is opened, hydraulic oil in the hydraulic oil cylinder 41 can flow through the damping pipe 45, and the damping amount is adjusted by adjusting the closing degree of the block valve 451.

H. And sequentially and symmetrically constructing other damping stay bar assemblies.

I. And (5) dismantling the temporary support frame to finish the installation of the beam string.

Example four:

the embodiment provides a spring damping energy-dissipation vibration-reduction beam string structure of a roof, as shown in fig. 6, the spring damping energy-dissipation vibration-reduction beam string structure of the roof comprises a plurality of beam strings according to the first embodiment or the second embodiment, and adjacent beam strings are connected through purlins 5.

Specifically, the construction process of the beam string roof system is as follows:

A. and (3) calculating the displacement of the support rod: according to the specific design requirements of the beam string drawing size, the design load and the like, finite element analysis is carried out on the beam string structure of the roof to calculate the tension of the stay cable, and the displacement of each stay rod is solved.

B. Prefabricated part: the upper chord beam 1, the stay bar, the spring damper 4 and the inhaul cable 3 are processed in advance.

C. Welding a support rod: and welding the connecting ends of the stay bar and the spring damper 4 on the ground, and paving the stay bar and the spring damper on the ground in sequence.

D. Pre-burying a connecting piece: and embedding a connecting piece at the design position of the roof upright post connected with the beam string structure.

E. Building a temporary jig frame: assembling the temporary support frame on site, and erecting the temporary support frame at the position where the beam string structure of the roof is determined.

F. Hoisting the upper chord beam 1: hoisting the upper chord beam 1 to a designated position in batches by adopting a tower crane, fixing the end of the upper chord beam with a connecting piece pre-embedded in a roof upright post, and installing a purline 5;

G. installing a support rod: after the construction of the upper chord beam 1 and the purline 5 is completed, a support rod is installed below the upper chord beam 1, and a connecting node of the upper chord beam 1 and the support rod is connected.

H. Installing a pull rope 3: after all the stay bars are installed, one of the stay ropes is fixed at the stay rope connection node at one end of the upper chord beam, the stay rope 3 sequentially penetrates through the clamp plate node 48 at the lower end of the spring damper 4, finally, the other stay rope is fixed at the stay rope connection node at the other end of the upper chord beam, and all the stay ropes 3 are installed on the roof beam structure in sequence.

I. The damping stay bar component extends: and a spring damper 4 of the damping stay bar assembly is communicated with an external hydraulic oil pump, the spring damper 4 is extended to a specified position, the stay cable 3 is tensioned, and the spring damper 4 is extended for three times, namely, the lower chord stay cable is tensioned for 3 times.

Taking the example that the upper chord beam 1 is sequentially connected with 5 damping brace rod assemblies, namely a first damping brace rod assembly, a second damping brace rod assembly, a third damping brace rod assembly, a fourth damping brace rod assembly and a fifth damping brace rod assembly, the first case is that the first damping brace rod assembly and the fifth damping brace rod assembly are firstly extended, then the second damping brace rod assembly and the fourth damping brace rod assembly are extended, and finally the third damping brace rod assembly is extended; in the second case, the third damping brace rod component is extended, then the second damping brace rod component and the fourth damping brace rod component are extended, and finally the first damping brace rod component and the fifth damping brace rod component are extended; and the third condition is that the first damping stay bar component, the second damping stay bar component, the third damping stay bar component, the fourth damping stay bar component and the fifth damping stay bar component are sequentially extended.

J. The upper beam 1 of the third beam structure was installed, the spring damper 4 of the first beam structure was extended, and the first beam structure was detached from the temporary support frame, and the installation of all the beam structures was completed in accordance with the above procedure.

K. And after tensioning all the inhaul cables 3 is completed, removing the tower crane, and dismantling the temporary support frame to complete construction.

Example five:

this embodiment is through contrasting different stretch-draw order cable stress variation to 7 damping vaulting pole subassemblies are the example, promptly, damping vaulting pole subassembly I, damping vaulting pole subassembly II, damping vaulting pole subassembly III, damping vaulting pole subassembly IV, damping vaulting pole subassembly V, damping vaulting pole subassembly VI, damping vaulting pole subassembly VII.

The tensioning method of the inhaul cable 3 can be divided into the following steps: A. symmetrically extending the damping stay bar components from left to right to the middle; B. symmetrically extending the damping stay bar components from the middle to two ends; C. the damper strut assemblies are extended sequentially from one end to the other.

The structure schematic diagram of the beam string of this embodiment is shown in fig. 7, the span of the beam string is 66990mm, the upper beam string is box-shaped, the size is 1100mm × 350 mm × 30 mm × 30 mm, the brace is circular tube, the diameter is 600mm, the wall thickness is 20mm, the diameter of the stay cable is 100mm, the tensile strength is 1860MPa, and the tension control stress is 470 MPa.

Fig. 8 (a) -8 (h), 9 (a) -9 (h), and 10 (a) -10 (h) show stress states generated by different stretching sequences of the stay respectively, and it can be seen from the cable stress variation graphs in different stretching sequences shown in fig. 11 that the cable stress generated by the stretching sequence of the symmetrically stretching stay from the middle to the two ends is relatively high, but the cable stress limit value generated by the symmetrically stretching stay from the two ends to the middle is maximum, and the cable stress variation in three different stretching sequences can finally achieve the goal of controlling the stretching stress.

Further, in the embodiment, the performances of the spring damping energy dissipation and vibration reduction brace beam string beam are compared with those of the spring damping energy dissipation vibration reduction brace beam string beam in the prior art, as shown in fig. 7, elCentro seismic waves are introduced, as shown in fig. 12, the stiffness of the brace rod line is 1.0e +05N/mm, and the damping coefficient is 0.02. Fig. 13 shows the deformation and stress of the spring damping energy-dissipating vibration-damping brace beam string under the action of an earthquake. As shown in fig. 14, compared with the guy cable stress of the guy beam of the conventional technology, the guy cable stress of the guy beam adopting the embodiment has the advantages of small stress fluctuation range, stable stress change, cable loss reduction and service life prolongation. As shown in fig. 15, the span-middle vertical displacement of the beam string cable in the embodiment is compared with the span-middle vertical displacement of the beam string cable in the conventional technology, the displacement deformation is small, the spring damper has an obvious effect on controlling the seismic acceleration of the beam string structure, the deformation caused by seismic vibration can be reduced, and the cable string structure has good energy consumption and shock absorption functions.

Further, the present embodiment calculates the adjustment amount of the tension bolt when the cable force is relaxed by finite element analysis as shown in the following table.

TABLE 1 bolt adjustment for different cable slack ratios

The above description is only an embodiment of the present invention, and variations that can be easily conceived by those skilled in the art within the scope of the present invention are also included in the scope of the present invention.

Claims (6)

1. A spring damping energy dissipation vibration attenuation beam is characterized by comprising an upper beam, a damping stay bar assembly, a stay cable and a stay cable

The two ends of the stay cable are respectively and correspondingly connected with the two ends of the upper chord beam, a tensioning area is formed between the stay cable and the upper chord beam, and the stay cable and the upper chord beam are distributed at intervals in the tensioning area

A plurality of damping brace rod components; the damping strut component can be increased through the strut in the mounting stage of the beam string, and the bracing cable is stretched

In a normal use stage, the spring damping energy dissipation and vibration reduction stay bar can dissipate vibration energy and reduce the amplitude of the stay cable;

wherein, the damping strut component comprises a strut and a spring damper which are connected into a whole, one end of the strut is connected with the upper chord beam, and the spring damper

One end of the device is connected with a pull rope; the stay bar comprises a steel pipe main body, a connecting plate connected to one end of the steel pipe main body and a first end plate connected to the other end of the steel pipe main body, and is hinged to the upper chord beam through the connecting plate and connected with the spring damper through the first end plate;

the spring damper comprises a hydraulic oil cylinder, one end of the hydraulic oil cylinder is connected with a second end plate, and the second end plate is fixed with the first end plate to realize the connection of the spring damper and the supporting rod; a first flange plate is arranged at one end, far away from the second end plate, of the cylinder body of the hydraulic oil cylinder, a piston rod is arranged in the hydraulic oil cylinder, one end of the piston rod is in contact with the inner wall of the cylinder body through a third end plate, and the third end plate can move along the inner wall of the cylinder body; one end of the piston rod, which extends out of the cylinder body, is connected with a fourth end plate, and is connected with a clamping plate node through the fourth end plate, and the clamping plate node is used for clamping the inhaul cable; an oil inlet and an oil outlet are arranged at one side of the hydraulic oil cylinder at intervals, and a damping pipe is connected between the oil inlet and the oil outlet;

the extending end of the piston rod penetrates through the second flange plate; after the requirement of extending the piston rod is met, the first flange plate and the second flange plate are connected through a tensioning bolt; a spring is sleeved on the outer side of the rod end of the piston rod between the second flange plate and the fourth end plate;

the splint node includes splint, pulley, and the splint that two intervals set up are connected to the end plate bottom, installs the pulley that sets up about two between two splint, forms the contact space of cable between two pulleys.

2. The spring damping energy-consumption vibration-damping beam string as claimed in claim 1, wherein the damping tube is provided with a blocking valve, the oil inlet is provided with an oil inlet switch, and the oil outlet is provided with an oil outlet switch.

3. The spring damping energy-dissipating vibration damping beam string as claimed in claim 1, wherein one or more springs are provided.

4. The spring damping energy-dissipating vibration damping beam string as claimed in claim 1, wherein the springs are arranged in plurality at intervals along the circumferential direction of the piston rod.

5. A spring damping energy-dissipating vibration-damping beam string roof system is characterized by comprising a plurality of beam string structures as claimed in any one of claims 1 to 4, and adjacent beam string structures are connected through purlins.

6. The construction method of the spring damping energy-dissipating vibration-damping beam string as claimed in any one of claims 1 to 4, comprising:

assembling an upper chord beam on the temporary support frame;

the damping brace rod assemblies are connected at intervals along the length direction of the upper chord beam;

one end of a guy cable is connected with one end of the upper chord beam, the guy cable is sequentially connected with each damping stay bar component, and then the other end of the guy cable is connected with the other end of the upper chord beam;

firstly, adjusting the length of the middle damping brace rod component: the piston rod is extended by pressing hydraulic oil into the hydraulic oil cylinder, and the first flange plate and the second flange plate are connected through a tensioning bolt after the length requirement is met;

sequentially adjusting the lengths of the rest damping stay bar components, and fixing the rest damping stay bar components through tensioning bolts;

and (5) removing the temporary support frame.

Images