CN107894362A - A kind of longitudinal direction, rotational stiffness constrain certainly and self-balancing experimental rig and test method - Google Patents

A kind of longitudinal direction, rotational stiffness constrain certainly and self-balancing experimental rig and test method Download PDF

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Publication number
CN107894362A
CN107894362A CN201711426415.5A CN201711426415A CN107894362A CN 107894362 A CN107894362 A CN 107894362A CN 201711426415 A CN201711426415 A CN 201711426415A CN 107894362 A CN107894362 A CN 107894362A
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China
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girder steel
front side
rear side
oil cylinder
tie
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CN201711426415.5A
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CN107894362B (en
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杨健彬
郑愚
李春红
李荣泳
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Dongguan University of Technology
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Dongguan University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means

Abstract

The invention discloses a kind of longitudinal direction, rotational stiffness constrains certainly and self-balancing experimental rig and test method, the experimental rig includes a left side, Right side support girder steel, it is left, installing front side girder steel arm-tie component between Right side support girder steel, positioned at the rear side girder steel arm-tie component of front side girder steel arm-tie component rear end side, it is left, front side rotational restraint component is equiped between Right side support girder steel leading section, front side longitudinal restraint component positioned at front side rotational restraint component front, it is left, installing rear side rotational restraint component between Right side support girder steel rearward end, positioned at the rear side longitudinal restraint component of rear side rotational restraint component rear end side;The experimental rig is novel in design, automaticity is high, quick and easy for installation and can realize circulation Reusability, and can be needed according to experiment and carry out big minor adjustment, strong adaptability to longitudinal restraint rigidity, rotational restraint.The test method rapidly and accurately can provide longitudinal direction, rotational restraint for concrete sample and carry out civil engineering structure experiment.

Description

A kind of longitudinal direction, rotational stiffness constrain certainly and self-balancing experimental rig and test method
Technical field
The present invention relates to civil engineering structure experimental rig technical field, more particularly to a kind of longitudinal direction, rotational stiffness are from about Beam and self-balancing experimental rig and test method.
Background technology
With the continuous propulsion of China's urbanization, industrial, civilian and utilities building, the construction demand of structures are more prosperous Contain, incident is substantial amounts of structural test and new building material, the application study of new structure form.In structural test and In structure application study, beam element, strip unit, the pole unit of civil engineering structure are most basic construction unit form;Its In, the boundary condition of said structure unit and longitudinal direction(Laterally)Rigidity, rotational restraint are constrained, to itself and its composition The normal operating condition lower stress of structure, deformation, limit use state limit inferior bearing capacity, failure mode etc. have significant shadow Ring, and support beam(Or post)Form, the key factor such as rigidity size determined in the difference and member planar of its boundary condition Longitudinal restraint rigidity, the size of rotational restraint.
Among actual scientific research or engineering test process, the development test to beam element, strip unit needs to simulate The edge-restraint condition of component and structure;Wherein, for existing structure test method and technique, carry out component test and During structural test, longitudinal restraint rigidity, the rotational restraint of effective and smart quantization can not be provided.In addition, existing structure is tested Method and technique, go to study its experiment to designed model by changing rotational restraint or sidewise restraint rigidity variable Effect and influence, need to design and make different sizes, rigidity, the concrete support beam of constraint type or bracing members beam.Based on existing There are structure testing method and technique, to realize different longitudinal restraint rigidity and rotational restraint, support beam is disposable, different Recycling, its design rigidity precision is more coarse, and the size that can be provided longitudinal restraint rigidity is limited, can not be needed by experiment Seek the longitudinal restraint rigidity and rotational restraint size for reaching smaller or larger high-precision rank.
From the above situation, it can be seen that, there is following defect in existing structure test method and technique, specifically:
1st, traditional civil engineering structure experiment in general support and the way of restraint are freely-supported or are hinged, and can not be realized affixed or approximate Affixed constraint type;
2nd, longitudinal restraint, rotational restraint can not be better achieved;The longitudinal direction for quantifying and having degree of precision to ensure can not be provided about Shu Gangdu, rotational restraint;
3rd, the implementation of traditional constraints rigidity, support member and research object(Beam, plate, post)Mix as an entirety, to research Draw excessive variable and disturbing factor;
4th, manufacturing process is complex, and craft precision can not be guaranteed;
5th, it is disposable test specimen, Reusability can not be circulated.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art and a kind of longitudinal direction of offer, rotational stiffness constrain certainly and certainly flat Weigh experimental rig, and the longitudinal direction, rotational stiffness constrain certainly and self-balancing experimental rig novel in structural design, automaticity height, peace Fill convenient and swift and circulation Reusability can be realized, and can be firm to longitudinal restraint rigidity, rotational restraint according to experiment needs Degree carries out big minor adjustment, strong adaptability.
Another object of the present invention is to provide a kind of longitudinal direction, rotational stiffness from constraint and self-balancing test method, this is vertical To, rotational stiffness from constrain and self-balancing test method can rapidly and accurately for concrete sample provide longitudinally, rotational restraint Rigidity simultaneously carries out civil engineering structure experiment.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions.
A kind of longitudinal direction, rotational stiffness include respectively in being vertically arranged and edge respectively from constraining and self-balancing experimental rig The horizontal-extending Left-side support girder steel of fore-and-aft direction, Right side support girder steel, Left-side support girder steel is located at Right side support girder steel Left end side and Left-side support girder steel and Right side support girder steel face arranged for interval, the upper surface of Left-side support girder steel and Right side support The horizontal flush arrangement in upper surface of girder steel, the lower surface of Left-side support girder steel and the lower surface horizontal parallel cloth of Right side support girder steel Put;
Front side girder steel arm-tie component is equiped between Left-side support girder steel and Right side support girder steel, positioned at front side girder steel arm-tie component Rear end side and with the spaced apart rear side girder steel arm-tie component of front side girder steel arm-tie component;Front side girder steel arm-tie component includes position In Left-side support girder steel, Right side support girder steel lower end side and along the horizontal-extending front side lower end girder steel arm-tie of left and right directions and Positioned at Left-side support girder steel, Right side support girder steel upper end side and along the horizontal-extending front side upper end girder steel arm-tie of left and right directions, Front side upper end girder steel arm-tie is located at the surface of front side lower end girder steel arm-tie, on the left part of front side lower end girder steel arm-tie, front side The left part of end girder steel arm-tie extends respectively to the left end side of Left-side support girder steel, the right part of front side lower end girder steel arm-tie, preceding The right part of side upper end girder steel arm-tie extends respectively to the right-hand member side of Right side support girder steel, and the upper surface of Left-side support girder steel is in preceding The front side left end column being placed with being vertically arranged is taken immediately below the girder steel arm-tie of side upper end, the upper surface of Right side support girder steel is in preceding The front side right-hand member column being placed with being vertically arranged is taken immediately below the girder steel arm-tie of side upper end, front side left end column is stood with front side right-hand member The contour arrangement of post;The left part of front side lower end girder steel arm-tie and the left part of front side upper end girder steel arm-tie are by being vertically arranged Bolt connection, the right part of front side lower end girder steel arm-tie and the right part of front side upper end girder steel arm-tie are also by being vertically arranged Bolt connection, front side left end column are clamped between Left-side support girder steel and front side upper end girder steel arm-tie, front side right-hand member column card Tightly between Right side support girder steel and front side upper end girder steel arm-tie;
Rear side girder steel arm-tie component includes positioned at Left-side support girder steel, Right side support girder steel lower end side and along left and right directions water The rear side lower end girder steel arm-tie of flat extension and positioned at Left-side support girder steel, Right side support girder steel upper end side and along left and right directions Horizontal-extending rear side upper end girder steel arm-tie, rear side upper end girder steel arm-tie are located at the surface of rear side lower end girder steel arm-tie, rear side Left part, the left part of rear side upper end girder steel arm-tie of lower end girder steel arm-tie extend respectively to the left end side of Left-side support girder steel, Right part, the right part of rear side upper end girder steel arm-tie of rear side lower end girder steel arm-tie extend respectively to the right-hand member of Right side support girder steel Side, the upper surface of Left-side support girder steel are taken to be placed with immediately below the girder steel arm-tie of rear side upper end and stood in the rear side left end being vertically arranged Post, the upper surface of Right side support girder steel are taken to be placed with immediately below the girder steel arm-tie of rear side upper end and stood in the rear side right-hand member being vertically arranged Post, rear side left end column and the contour arrangement of rear side right-hand member column;The left part of rear side lower end girder steel arm-tie and rear side upper end girder steel Drawn by right part and the rear side upper end girder steel in the bolt connection being vertically arranged, rear side lower end girder steel arm-tie the left part of arm-tie The right part of plate is clamped in Left-side support girder steel and rear side upper end also by the bolt connection being vertically arranged, rear side left end column Between girder steel arm-tie, rear side right-hand member column is clamped between Right side support girder steel and rear side upper end girder steel arm-tie;
It is equiped between the leading section of Left-side support girder steel and the leading section of Right side support girder steel positioned at front side girder steel arm-tie component The front side rotational restraint component of front, the front side longitudinal restraint component positioned at front side rotational restraint component front, left side branch Support and be equiped between the rearward end of girder steel and the rearward end of Right side support girder steel after rear side girder steel arm-tie component rear end side Side rotational restraint component, the rear side longitudinal restraint component positioned at rear side rotational restraint component rear end side;Front side rotational restraint component Include front side test specimen support plate and positioned at Left-side support girder steel, girder steel upper end side and horizontal along left and right directions on the left of right side The front side oil cylinder installing plate of extension, front side oil cylinder installing plate are located at the surface of front side test specimen support plate, front side oil cylinder installing plate Left part extend to the left end side of Left-side support girder steel and the right part of front side oil cylinder installing plate extends to Right side support girder steel Right-hand member side, front side test specimen support plate includes the front side support plate main body in " n " shape, and front side support plate main body, which includes, is in Horizontal cross is arranged and the front side test specimen support between Left-side support girder steel and Right side support girder steel, front side support plate master The left part of body, which is welded, extends horizontally to the front side support plate left end connecting portion of Left-side support girder steel left end side, front side towards left side The right part of support plate main body, which is welded, extends horizontally to the front side support plate right-hand member company of Right side support girder steel right-hand member side towards right side Socket part, the front side support plate left end connecting portion of front side test specimen support plate pass through in vertical cloth with the left part of front side oil cylinder installing plate The bolt connection put, the right part of the front side support plate right-hand member connecting portion and front side oil cylinder installing plate of front side test specimen support plate also lead to Cross in the bolt connection being vertically arranged;The front side that the centre position of front side oil cylinder installing plate upper surface is screwed with up and down action rotates Oil cylinder is constrained, the piston rod of front side rotational restraint oil cylinder through front side oil cylinder installing plate and is extended under the oil cylinder installing plate of front side Side;
Rear side rotational restraint component includes rear side test specimen support plate and the girder steel upper end on the left of Left-side support girder steel, right side Side and it is being located at rear side test specimen support plate just along the horizontal-extending rear side oil cylinder installing plate of left and right directions, rear side oil cylinder installing plate Top, the left part of rear side oil cylinder installing plate extend to the left end side of Left-side support girder steel and the right part of rear side oil cylinder installing plate The right-hand member side of Right side support girder steel is extended to, rear side test specimen support plate includes the rear side support plate main body in " n " shape, rear side Support plate main body includes the rear side test specimen arranged in horizontal cross and between Left-side support girder steel and Right side support girder steel Support, the bearing-surface of rear side test specimen support and horizontal concordant, the rear side support plate main body of the bearing-surface of front side test specimen support Left part be welded the rear side support plate left end connecting portion of Left-side support girder steel left end side, rear side branch extended horizontally to towards left side The right part of plate body, which is welded, extends horizontally to the rear side support plate right-hand member connection of Right side support girder steel right-hand member side towards right side Portion, the rear side support plate left end connecting portion of rear side test specimen support plate and the left part of rear side oil cylinder installing plate are by being vertically arranged Bolt connection, the rear side support plate right-hand member connecting portion of rear side test specimen support plate and the right part of rear side oil cylinder installing plate also by In the bolt connection being vertically arranged;The rear side that the centre position of rear side oil cylinder installing plate upper surface is screwed with up and down action rotates about Beam oil cylinder, the piston rod of rear side rotational restraint oil cylinder pass through rear side oil cylinder installing plate and extend to the lower end of rear side oil cylinder installing plate Side;
Front side longitudinal restraint component includes the front side component plate support plate positioned at front side test specimen support plate front, positioned at front side The front side restained beam support plate of component plate support plate front, front side component plate support plate, front side restained beam support plate difference position Between the leading section of Left-side support girder steel and the leading section of Right side support girder steel, front side component plate support plate, front side restained beam The left part of support plate loads the bottom for being fixed in Left-side support girder steel, the supporting of front side component plate by lock screw spiral shell respectively Plate, the right part of front side restained beam support plate load the bottom for being fixed in Right side support girder steel by lock screw spiral shell respectively;Before Take the front side activity component plate being placed with being vertically arranged, the upper table of front side restained beam support plate in the upper surface of side component plate support plate The front side longitudinal restraint beam being placed with being vertically arranged is taken in face, and the centre position on the front side preceding surface of longitudinal restraint beam is screwed with front and rear water The front side longitudinal restraint oil cylinder that translation is made, the piston rod extension end of front side longitudinal restraint oil cylinder pass through front side longitudinal restraint beam simultaneously The rear end side of front side longitudinal restraint beam is extended to, the rear end side of front side longitudinal restraint beam is equiped with and front side longitudinal restraint oil cylinder The front side force transmitting board of piston rod extension end connection, the rearward end of front side force transmitting board are contacted with front side activity component plate, and front side is lived Dynamic component plate, which is screwed with, to be distributed in uniform intervals and is passed respectively along the horizontal-extending front side power transmission bolt of fore-and-aft direction, each front side The rearward end of power bolt extends respectively to the rear end side of the movable component plate in front side;The right flank spiral shell dress of Left-side support girder steel leading section There is front side left end bearing, the left surface of Right side support girder steel leading section is screwed with front side right-hand member bearing, front side left end bearing, front side Right-hand member bearing is located at the front of front side longitudinal restraint beam respectively, when front side longitudinal restraint cylinder action and forces in concrete examination During part front end face, front side left end bearing, front side right-hand member bearing abut with front side longitudinal restraint beam respectively;
Rear side longitudinal restraint component includes the rear side component plate support plate positioned at rear side test specimen support plate rear end side, positioned at rear side The rear side restained beam support plate of component plate support plate rear end side, rear side component plate support plate, rear side restained beam support plate difference position Between the rearward end of Left-side support girder steel and the rearward end of Right side support girder steel, rear side component plate support plate, rear side restained beam The left part of support plate loads the bottom for being fixed in Left-side support girder steel, the supporting of rear side component plate by lock screw spiral shell respectively Plate, the right part of rear side restained beam support plate load the bottom for being fixed in Right side support girder steel by lock screw spiral shell respectively;Afterwards Take the rear side activity component plate being placed with being vertically arranged, the upper table of rear side restained beam support plate in the upper surface of side component plate support plate Face, which is taken, to be placed with the rear side longitudinal restraint beam that is vertically arranged, and the centre position on surface is screwed with front and rear water after rear side longitudinal restraint beam The rear side longitudinal restraint oil cylinder that translation is made, the piston rod extension end of rear side longitudinal restraint oil cylinder pass through rear side longitudinal restraint beam simultaneously The front of rear side longitudinal restraint beam is extended to, the front of rear side longitudinal restraint beam is equiped with and rear side longitudinal restraint oil cylinder The rear side force transmitting board of piston rod extension end connection, the leading section of rear side force transmitting board are contacted with rear side activity component plate, and rear side is lived Dynamic component plate, which is screwed with, to be distributed in uniform intervals and is passed respectively along the horizontal-extending rear side power transmission bolt of fore-and-aft direction, each rear side The leading section of power bolt extends respectively to the front of the movable component plate of rear side;The right flank spiral shell dress of Left-side support girder steel rearward end There is rear side left end bearing, the left surface of Right side support girder steel rearward end is screwed with rear side right-hand member bearing, rear side left end bearing, rear side Right-hand member bearing is located at the rear end side of rear side longitudinal restraint beam respectively, when rear side longitudinal restraint cylinder action and forces in concrete examination During part rear end face, rear side left end bearing, rear side right-hand member bearing abut with rear side longitudinal restraint beam respectively.
Wherein, the piston rod extension end of the front side rotational restraint oil cylinder is equiped with pressure sensor, and the rear side turns The piston rod extension end of moving constraint oil cylinder is also equiped with pressure sensor.
Wherein, it is equiped with pressure between the piston rod extension end of the front side longitudinal restraint oil cylinder and the front side force transmitting board Force snesor, pressure is also equiped between the piston rod extension end of the rear side longitudinal restraint oil cylinder and the rear side force transmitting board Sensor.
Wherein, the front end face of the front side activity component plate offer up and down completely through and cross section semicircular in shape shape Front side component plate groove, the rear end face of the front side force transmitting board is arc surface, and the rearward end of front side force transmitting board is intercalated in front side and lived In the front side component plate groove of dynamic component plate.
Wherein, the rear end face of the rear side activity component plate offer up and down completely through and cross section semicircular in shape shape Rear side component plate groove, the front end face of the rear side force transmitting board is arc surface, and the leading section of rear side force transmitting board is intercalated in rear side and lived In the rear side component plate groove of dynamic component plate.
A kind of longitudinal direction, rotational stiffness include following steps, specifically from constraint and self-balancing test method:
A, the experimental rig described in claim 1-5 any one is installed on the workbench of forcing press, and by concrete Test specimen is positioned between Left-side support girder steel and Right side support girder steel, and the leading section of concrete sample, which is taken, is put in front side test specimen supporting The front side test specimen support upper surface of plate, the rearward end of concrete sample take the rear side test specimen supporting for being put in rear side test specimen support plate Portion upper surface;Wherein, concrete sample surface mount or interior resistance strain plate, sinusoid strain gauge, fiber grating are embedded with Strain gauge, the surface of concrete sample are provided with LVDT displacement transducers, and front end face, the rear end face of concrete sample are installed respectively There are piezoelectric ceramic piece, the piezoelectric ceramic piece of concrete sample front end face and the piezoelectric ceramic piece of rear end face to arrangement;
B, by front side rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder point It is not connected with servo pump station, and by servo pump station, each pressure sensor, resistance strain plate, sinusoid strain gauge, fiber grating Strain gauge, LVDT displacement transducers and piezoelectric ceramic piece are connected with acquisition system and computer respectively;
C, longitudinal restraint power, the rotational restraint power of concrete sample are set according to test requirements document, then starts front side rotational restraint Oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder, and pass through front side rotational restraint oil Cylinder, rear side rotational restraint oil cylinder apply rotational restraint power, and indulged by front side respectively to the leading section of concrete sample, rearward end Longitudinal restraint power is applied respectively to front end face, the rear end face of concrete sample to constraint oil cylinder, rear side longitudinal restraint oil cylinder;Front side Rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder are to concrete sample Pressure is consistent with experiment setup parameter;
D, treat that front side rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder are applied Power starts forcing press and concrete sample is preloaded after concrete sample;
E, after the completion for the treatment of preloading action, off-load is carried out;
F, after treating pre-add loading and unloading, concrete sample is formally loaded by forcing press, and is divided according to tester Level progressively load and accordingly hold lotus, in the process, by resistance strain plate, sinusoid strain gauge, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece collection concrete sample strain accordingly, displacement, crack and deformation data, it is above-mentioned Data transfer is into acquisition system and computer;
G, until concrete sample destroys, experiment loading is completed, and last acquisition system and computer are handled test data Analysis.
Beneficial effects of the present invention are:A kind of longitudinal, rotational stiffness of the present invention tests dress from constraint and self-balancing Put, it is in be vertically arranged and respectively along the horizontal-extending Left-side support girder steel of fore-and-aft direction, Right side support steel respectively that it, which includes, Beam, Left-side support girder steel is located at the left end side of Right side support girder steel and Left-side support girder steel and Right side support girder steel face interval cloth Put, front side girder steel arm-tie component is equiped between Left-side support girder steel and Right side support girder steel, positioned at front side girder steel arm-tie component Rear end side and with the spaced apart rear side girder steel arm-tie component of front side girder steel arm-tie component;The leading section of Left-side support girder steel and the right side The front side rotational restraint component positioned at front side girder steel arm-tie component front is equiped between the leading section of side support steel beam, is located at The front side longitudinal restraint component of front side rotational restraint component front, rearward end and the Right side support girder steel of Left-side support girder steel The rear side rotational restraint component positioned at rear side girder steel arm-tie component rear end side is equiped between rearward end, positioned at rear side rotational restraint The rear side longitudinal restraint component of component rear end side.By said structure design, the present invention has novel in structural design, automation journey Spend high, quick and easy for installation and the advantages of circulating Reusability can be realized, and can be firm to longitudinal restraint according to experiment needs Degree, rotational restraint carry out big minor adjustment, strong adaptability.
The another of the present invention has the beneficial effect that:A kind of longitudinal, rotational stiffness of the present invention is tried from constraint and self-balancing Proved recipe method, it includes following steps, specifically:A, the experimental rig described in claim 1-5 any one is installed on pressure On the workbench of power machine, and concrete sample is positioned between Left-side support girder steel and Right side support girder steel, concrete examination The front side test specimen support upper surface for being put in front side test specimen support plate is taken in the leading section of part, and the rearward end of concrete sample, which is taken, to be put in The rear side test specimen support upper surface of rear side test specimen support plate;Wherein, concrete sample surface mount or interior it is embedded with resistance-type Foil gauge, sinusoid strain gauge, fiber grating strain meter, the surface of concrete sample are provided with LVDT displacement transducers, coagulation Front end face, the rear end face of native test specimen are separately installed with piezoelectric ceramic piece, the piezoelectric ceramic piece of concrete sample front end face and rear end The piezoelectric ceramic piece in face is to arrangement;B, by front side rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil Cylinder, rear side longitudinal restraint oil cylinder are connected with servo pump station respectively, and by servo pump station, each pressure sensor, resistance strain plate, Sinusoid strain gauge, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece respectively with acquisition system and calculating Machine connects;C, longitudinal restraint power, the rotational restraint power of concrete sample are set according to test requirements document, then starts front side and rotates about Beam oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder, and pass through front side rotational restraint Oil cylinder, rear side rotational restraint oil cylinder apply rotational restraint power respectively to the leading section of concrete sample, rearward end, and pass through front side Longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder apply longitudinal restraint power respectively to front end face, the rear end face of concrete sample;Before Side rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil cylinder, rear side longitudinal restraint oil cylinder are to concrete sample Pressure with experiment setup parameter it is consistent;D, front side rotational restraint oil cylinder, rear side rotational restraint oil cylinder, front side longitudinal restraint oil are treated After cylinder, rear side longitudinal restraint oil cylinder force in concrete sample, start forcing press and concrete sample is preloaded;E, treat pre- After the completion of loading action, off-load is carried out;F, after treating pre-add loading and unloading, concrete sample is carried out by forcing press formally to add Carry, and progressively loaded according to test plan classification and accordingly hold lotus, in the process, answered by resistance strain plate, sinusoid Change meter, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece collection concrete sample strain accordingly, position Move, crack and deformation data, in above-mentioned data transfer to acquisition system and computer;G, until concrete sample destruction, experiment Loading is completed, and last acquisition system and computer carry out Treatment Analysis to test data.The test method can be rapidly and accurately Longitudinal direction, rotational restraint are provided for concrete sample and carry out civil engineering structure experiment.
Brief description of the drawings
The present invention is further detailed below with accompanying drawing, but the embodiment in accompanying drawing is not formed to this hair Bright any restrictions.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the decomposing schematic representation of the present invention.
Include in fig. 1 and 2:
11 --- Left-side support girder steel 12 --- Right side support girder steels
21 --- front side girder steel arm-tie component 211 --- front side lower end girder steel arm-ties
212 --- front side upper end girder steel arm-tie 213 --- front side left end columns
214 --- front side right-hand member column 22 --- rear side girder steel arm-tie components
221 --- rear side lower end girder steel arm-tie 222 --- rear side upper end girder steel arm-ties
223 --- rear side left end column 224 --- rear side right-hand member columns
31 --- front side rotational restraint component 311 --- front side test specimen support plates
3111 --- front side support plate main body 31111 --- front side test specimen supports
3112 --- front side support plate left end connecting portion
3113 --- front side support plate right-hand member connecting portion
312 --- front side oil cylinder installing plate 313 --- front side rotational restraint oil cylinders
32 --- rear side rotational restraint component 321 --- rear side test specimen support plates
3211 --- rear side support plate main body 32111 --- rear side test specimen supports
3212 --- rear side support plate left end connecting portion
3213 --- rear side support plate right-hand member connecting portion
322 --- rear side oil cylinder installing plate 323 --- rear side rotational restraint oil cylinders
41 --- front side longitudinal restraint component 411 --- front side component plate support plates
412 --- front side restained beam support plate 413 --- front side activity component plates
4131 --- front side component plate groove 414 --- front side longitudinal restraint beams
415 --- front side longitudinal restraint oil cylinder 416 --- front side force transmitting boards
417 --- front side power transmission bolt 418 --- front side left end bearings
419 --- front side right-hand member bearing 42 --- rear side longitudinal restraint components
421 --- rear side component plate support plate 422 --- rear side restained beam support plates
423 --- rear side activity component plate 4231 --- rear side component plate grooves
424 --- rear side longitudinal restraint beam 425 --- rear side longitudinal restraint oil cylinders
426 --- rear side force transmitting board 427 --- rear side power transmission bolts
428 --- rear side left end bearing 429 --- rear side right-hand member bearings
5 --- concrete sample.
Embodiment
With reference to specific embodiment, the present invention will be described.
As depicted in figs. 1 and 2, a kind of longitudinal direction, rotational stiffness include respectively in perpendicular from constraint and self-balancing experimental rig To arrangement and respectively along the horizontal-extending Left-side support girder steel 11 of fore-and-aft direction, Right side support girder steel 12, Left-side support girder steel 11 positioned at Right side support girder steel 12 left end side and Left-side support girder steel 11 and the face arranged for interval of Right side support girder steel 12, left side The upper surface of support steel beam 11 and the horizontal flush arrangement in upper surface of Right side support girder steel 12, the lower surface of Left-side support girder steel 11 Arranged with the lower surface horizontal parallel of Right side support girder steel 12.
Wherein, front side girder steel arm-tie component 21 is equiped between Left-side support girder steel 11 and Right side support girder steel 12, is located at The rear end side of front side girder steel arm-tie component 21 and with 21 spaced apart rear side girder steel arm-tie component 22 of front side girder steel arm-tie component;Before Side girder steel arm-tie component 21 includes positioned at Left-side support girder steel 11, the lower end side of Right side support girder steel 12 and along left and right directions water The front side lower end girder steel arm-tie 211 of flat extension and positioned at Left-side support girder steel 11, the upper end side of Right side support girder steel 12 and along The horizontal-extending front side upper end girder steel arm-tie 212 of left and right directions, front side upper end girder steel arm-tie 212 are located at front side lower end girder steel arm-tie 211 surface, left part, the left part of front side upper end girder steel arm-tie 212 of front side lower end girder steel arm-tie 211 extend respectively to The left end side of Left-side support girder steel 11, the right part of front side lower end girder steel arm-tie 211, the right-hand member of front side upper end girder steel arm-tie 212 Portion extends respectively to the right-hand member side of Right side support girder steel 12, and the upper surface of Left-side support girder steel 11 is in front side upper end girder steel arm-tie The front side left end column 213 being placed with being vertically arranged is taken in 212 underface, and the upper surface of Right side support girder steel 12 is in front side upper end The front side right-hand member column 214 being placed with being vertically arranged is taken in the underface of girder steel arm-tie 212, and front side left end column 213 is right with front side Hold 214 contour arrangement of column;The left part of front side lower end girder steel arm-tie 211 and the left part of front side upper end girder steel arm-tie 212 lead to Cross in the bolt connection being vertically arranged, the right part of front side lower end girder steel arm-tie 211 and the right-hand member of front side upper end girder steel arm-tie 212 Portion is clamped in Left-side support girder steel 11 and front side upper end steel also by the bolt connection being vertically arranged, front side left end column 213 Between beam arm-tie 212, front side right-hand member column 214 is clamped between Right side support girder steel 12 and front side upper end girder steel arm-tie 212.
Likewise, rear side girder steel arm-tie component 22 includes positioned at Left-side support girder steel 11, the lower end of Right side support girder steel 12 Side and along the horizontal-extending rear side lower end girder steel arm-tie 221 of left and right directions and positioned at Left-side support girder steel 11, Right side support The upper end side of girder steel 12 and along the horizontal-extending rear side upper end girder steel arm-tie 222 of left and right directions, rear side upper end girder steel arm-tie 222 In the surface of rear side lower end girder steel arm-tie 221, the left part of rear side lower end girder steel arm-tie 221, rear side upper end girder steel arm-tie 222 Left part extend respectively to the left end side of Left-side support girder steel 11, right part, the rear side upper end of rear side lower end girder steel arm-tie 221 The right part of girder steel arm-tie 222 extends respectively to the right-hand member side of Right side support girder steel 12, the upper surface of Left-side support girder steel 11 in The rear side left end column 223 being placed with being vertically arranged is taken in the underface of rear side upper end girder steel arm-tie 222, Right side support girder steel 12 The rear side right-hand member column 224 being placed with being vertically arranged, rear side left end are taken in the underface of rear side upper end girder steel arm-tie 222 in upper surface Column 223 and 224 contour arrangement of rear side right-hand member column;Drawn with rear side upper end girder steel the left part of rear side lower end girder steel arm-tie 221 The left part of plate 222 passes through in the bolt connection being vertically arranged, right part and the rear side upper end steel of rear side lower end girder steel arm-tie 221 The right part of beam arm-tie 222 is clamped in Left-side support girder steel also by the bolt connection being vertically arranged, rear side left end column 223 Between 11 and rear side upper end girder steel arm-tie 222, rear side right-hand member column 224 is clamped in Right side support girder steel 12 and rear side upper end girder steel Between arm-tie 222.
Further, it is equiped with and is located between the leading section of Left-side support girder steel 11 and the leading section of Right side support girder steel 12 The front side rotational restraint component 31 of the front of front side girder steel arm-tie component 21, before the front of front side rotational restraint component 31 Side longitudinal restraint component 41, it is equiped with and is located between the rearward end of Left-side support girder steel 11 and the rearward end of Right side support girder steel 12 The rear side rotational restraint component 32 of the rear end side of rear side girder steel arm-tie component 22, after the rear end side of rear side rotational restraint component 32 Side longitudinal restraint component 42;Front side rotational restraint component 31 includes front side test specimen support plate 311 and positioned at Left-side support steel Beam 11, girder steel upper end side and along the horizontal-extending front side oil cylinder installing plate 312 of left and right directions, the installation of front side oil cylinder on the left of right side Plate 312 is located at the surface of front side test specimen support plate 311, and the left part of front side oil cylinder installing plate 312 extends to Left-side support steel The left end side of beam 11 and the right part of front side oil cylinder installing plate 312 extend to the right-hand member side of Right side support girder steel 12, front side test specimen Support plate 311 includes the front side support plate main body 3111 in " n " shape, and front side support plate main body 3111 includes in horizontal horizontal Front side test specimen support 31111 to arrangement and between Left-side support girder steel 11 and Right side support girder steel 12, front side supporting The left part of plate main body 3111, which is welded, extends horizontally to the front side support plate left end of the left end side of Left-side support girder steel 11 towards left side Connecting portion 3112, the right part of front side support plate main body 3111 is welded extends horizontally to the right-hand member of Right side support girder steel 12 towards right side The front side support plate right-hand member connecting portion 3113 of side, the front side support plate left end connecting portion 3112 of front side test specimen support plate 311 is with before The left part of side cylinder installing plate 312 passes through in the bolt connection being vertically arranged, the front side support plate of front side test specimen support plate 311 The right part of right-hand member connecting portion 3113 and front side oil cylinder installing plate 312 is also by the bolt connection being vertically arranged;Front side oil cylinder The centre position of the upper surface of installing plate 312 is screwed with the front side rotational restraint oil cylinder 313 of up and down action, front side rotational restraint oil cylinder 313 piston rod passes through front side oil cylinder installing plate 312 and extends to the lower end side of front side oil cylinder installing plate 312.
Likewise, rear side rotational restraint component 32 includes rear side test specimen support plate 321 and positioned at Left-side support girder steel 11st, girder steel upper end side and along the horizontal-extending rear side oil cylinder installing plate 322 of left and right directions, rear side oil cylinder installing plate on the left of right side 322 are located at the surface of rear side test specimen support plate 321, and the left part of rear side oil cylinder installing plate 322 extends to Left-side support girder steel 11 left end side and the right part of rear side oil cylinder installing plate 322 extend to the right-hand member side of Right side support girder steel 12, rear side test specimen branch Board 321 includes the rear side support plate main body 3211 in " n " shape, and rear side support plate main body 3211 includes in horizontal cross Arrangement and the rear side test specimen support 32111 between Left-side support girder steel 11 and Right side support girder steel 12, rear side test specimen branch The bearing-surface of bearing portion 32111 and horizontal concordant, the left side for rear side support plate main body 3211 of the bearing-surface of front side test specimen support 31111 End, which is welded, extends horizontally to the rear side support plate left end connecting portion 3212 of the left end side of Left-side support girder steel 11, rear side towards left side The right part of support plate main body 3211, which is welded, extends horizontally to the rear side support plate of the right-hand member side of Right side support girder steel 12 towards right side Right-hand member connecting portion 3213, rear side support plate left end connecting portion 3212 and the rear side oil cylinder installing plate 322 of rear side test specimen support plate 321 Left part pass through in the bolt connection being vertically arranged, the rear side support plate right-hand member connecting portion 3213 of rear side test specimen support plate 321 Right part with rear side oil cylinder installing plate 322 is also by the bolt connection being vertically arranged;The upper surface of rear side oil cylinder installing plate 322 Centre position be screwed with the rear side rotational restraint oil cylinder 323 of up and down action, the piston rod of rear side rotational restraint oil cylinder 323 passes through Rear side oil cylinder installing plate 322 and the lower end side for extending to rear side oil cylinder installing plate 322.
Further, front side longitudinal restraint component 41 includes positioned at the front side of the front of front side test specimen support plate 311 Component plate support plate 411, the front side restained beam support plate 412 positioned at the front of front side component plate support plate 411, front side component plate Support plate 411, front side restained beam support plate 412 are respectively positioned at the leading section of Left-side support girder steel 11 and Right side support girder steel 12 Between leading section, front side component plate support plate 411, the left part of front side restained beam support plate 412 pass through lock screw spiral shell respectively Load the bottom for being fixed in Left-side support girder steel 11, front side component plate support plate 411, the right-hand member of front side restained beam support plate 412 Portion loads the bottom for being fixed in Right side support girder steel 12 by lock screw spiral shell respectively;The upper table of front side component plate support plate 411 The front side activity component plate 413 being placed with being vertically arranged is taken in face, and the upper surface of front side restained beam support plate 412, which is taken, to be placed with vertical The front side longitudinal restraint beam 414 of arrangement, the centre position on 414 preceding surface of front side longitudinal restraint beam are screwed with anterior-posterior horizontal action Front side longitudinal restraint oil cylinder 415, the piston rod extension end of front side longitudinal restraint oil cylinder 415 pass through front side longitudinal restraint beam 414 And the rear end side of front side longitudinal restraint beam 414 is extended to, the rear end side of front side longitudinal restraint beam 414 is equiped with front side longitudinal direction about The front side force transmitting board 416 of the piston rod extension end connection of beam oil cylinder 415, rearward end and the front side activity of front side force transmitting board 416 Component plate 413 contacts, front side activity component plate 413 be screwed with uniform intervals distribution and it is horizontal-extending respectively along fore-and-aft direction Front side power transmission bolt 417, the rearward end of each front side power transmission bolt 417 extends respectively to the rear end of the movable component plate 413 in front side Side;The right flank of the leading section of Left-side support girder steel 11 is screwed with front side left end bearing 418, a left side for the leading section of Right side support girder steel 12 Side is screwed with front side right-hand member bearing 419, and front side left end bearing 418, front side right-hand member bearing 419 are located at front side longitudinal restraint respectively The front of beam 414, when front side longitudinal restraint oil cylinder 415 acts and forces in 5 front end face of concrete sample, front side left end branch Seat 418, front side right-hand member bearing 419 abut with front side longitudinal restraint beam 414 respectively.
Likewise, rear side longitudinal restraint component 42 includes the rear side component positioned at the rear end side of rear side test specimen support plate 321 Plate support plate 421, the rear side restained beam support plate 422 positioned at the rear end side of rear side component plate support plate 421, the supporting of rear side component plate Plate 421, rear side restained beam support plate 422 are respectively positioned at the rearward end of Left-side support girder steel 11 and the rear end of Right side support girder steel 12 Between portion, rear side component plate support plate 421, the left part of rear side restained beam support plate 422 are loaded by lock screw spiral shell respectively It is fixed in the bottom of Left-side support girder steel 11, rear side component plate support plate 421, the right end portion of rear side restained beam support plate 422 The bottom for being fixed in Right side support girder steel 12 is not loaded by lock screw spiral shell;Take the upper surface of rear side component plate support plate 421 It is placed with the rear side activity component plate 423 being vertically arranged, it is in be vertically arranged that the upper surface of rear side restained beam support plate 422, which is taken and is placed with, Rear side longitudinal restraint beam 424, the centre position on surface is screwed with the rear side of anterior-posterior horizontal action after rear side longitudinal restraint beam 424 Longitudinal restraint oil cylinder 425, the piston rod extension end of rear side longitudinal restraint oil cylinder 425 through rear side longitudinal restraint beam 424 and are prolonged The front of rear side longitudinal restraint beam 424 is extended, the front of rear side longitudinal restraint beam 424 is equiped with and rear side longitudinal restraint oil The rear side force transmitting board 426 of the piston rod extension end connection of cylinder 425, leading section and the rear side activity component of rear side force transmitting board 426 Plate 423 contacts, rear side activity component plate 423 be screwed with uniform intervals be distributed and respectively along fore-and-aft direction it is horizontal-extending after Side power transmission bolt 427, the leading section of each rear side power transmission bolt 427 extend respectively to the front of the movable component plate 423 of rear side;It is left The right flank of the rearward end of side support steel beam 11 is screwed with rear side left end bearing 428, the left surface of the rearward end of Right side support girder steel 12 Rear side right-hand member bearing 429 is screwed with, rear side left end bearing 428, rear side right-hand member bearing 429 are located at rear side longitudinal restraint beam respectively 424 rear end side, when rear side longitudinal restraint oil cylinder 425 acts and forces in 5 rear end face of concrete sample, rear side left end bearing 428th, rear side right-hand member bearing 429 abuts with rear side longitudinal restraint beam 424 respectively.
It is emphasized that the piston rod extension end of front side rotational restraint oil cylinder 313 is equiped with pressure sensor, rear side turns The piston rod extension end of moving constraint oil cylinder 323 is also equiped with pressure sensor;Outside the piston rod of front side longitudinal restraint oil cylinder 415 Prolong and pressure sensor is equiped between end and front side force transmitting board 416, the piston rod extension end of rear side longitudinal restraint oil cylinder 425 Pressure sensor is also equiped between rear side force transmitting board 426.
During use of the present invention, concrete sample 5 be positioned over Left-side support girder steel 11 and Right side support girder steel 12 it Between, and the upper surface of front side test specimen support 31111 for being put in front side test specimen support plate 311 is taken in the leading section of concrete sample 5, mixes The rearward end for coagulating native test specimen 5 takes the upper surface of rear side test specimen support plate 321 for being put in rear side test specimen support plate 321.For coagulation During the leading section of native test specimen 5 carries out rotational restraint, the piston rod extension end of front side rotational fuel tank forces in mixed down The upper surface of the native leading section of test specimen 5 is coagulated, to cause the leading section of concrete sample 5 to be clamped in the work of front side rotational restraint oil cylinder 313 Between stopper rod and front side test specimen support plate 311;Likewise, carry out the mistake of rotational restraint in the rearward end for concrete sample 5 Cheng Zhong, the piston rod extension end of rear side rotational fuel tank force in the upper surface of the rearward end of concrete sample 5 down, to mix The native rearward end of test specimen 5 is coagulated to be clamped between the piston rod and rear side test specimen support plate 321 of rear side rotational restraint oil cylinder 323.In addition, During longitudinal restraint is carried out to the leading section of concrete sample 5, the piston rod epitaxial end of front side longitudinal restraint oil cylinder 415 Active force is transferred to the movable component plate 413 in front side, front side activity by force transmitting board 416 on front side of pushing tow, front side force transmitting board 416 backwards in portion Distribution of forces in each front side power transmission bolt 417 and is caused each front side power transmission bolt 417 to force in concrete by component plate 413 again The front end face of test specimen 5;Likewise, during longitudinal restraint is carried out to the rearward end of concrete sample 5, rear side longitudinal restraint Active force is transferred to rear side by force transmitting board 426 on rear side of the piston rod extension end pushing tow facing forward of oil cylinder 425, rear side force transmitting board 426 Distribution of forces in each rear side power transmission bolt 427 and is caused each rear side by movable component plate 423, rear side activity component plate 423 again Power transmission bolt 427 forces in the rear end face of concrete sample 5.
It should further be noted that during each constraint oil cylinder forces in concrete sample 5, corresponding pressure sensor is real When obtain constraint oil cylinder pressure and pressure signal is sent to acquisition system and computer in real time, when pressure sensor is obtained When pressure value reaches the confining pressure value of experiment setting, the corresponding oil cylinder that constrains stops pressurization.In addition, respectively constrain the pressure of oil cylinder Power can be adjusted according to test requirements document.
Need to be explained further, the front end face of front side activity component plate 413 offer up and down completely through and cross section in half The front side component plate groove 4131 of toroidal, the rear end face of front side force transmitting board 416 are arc surface, the rear end of front side force transmitting board 416 Portion is intercalated in the front side component plate groove 4131 of the movable component plate 413 in front side;Likewise, after rear side activity component plate 423 End face offer up and down completely through and cross section semicircular in shape shape rear side component plate groove 4231, rear side force transmitting board 426 Front end face is arc surface, and the leading section of rear side force transmitting board 426 is intercalated in the rear side component plate groove of the movable component plate 423 of rear side In 4231.By setting front side component plate groove 4131, rear side component plate groove 4231, the present invention can ensure front side force transmitting board 416th, rear side force transmitting board 426 can be reliablely and stablely by pressure conduction to corresponding front side activity component plate 413, rear side activity point Power plate 423.
By said structure design, longitudinal direction of the invention, rotational stiffness have following from constraint and self-balancing experimental rig Advantage, specifically:
The 1st, longitudinal restraint rigidity can be provided, while rotational restraint can be provided;
2nd, the adjustable change of longitudinal restraint rigidity, rotational restraint size;
3rd, longitudinal restraint rigidity, the size of rotational restraint are adjusted by corresponding oil cylinder, easy to adjust;
4th, by the accurate control constraints counter-force size of pressure sensor, the situation of different size of constraint rigidity can provided Under, it can also realize high accuracy, stiffness variation can be quantified;
5th, rigidity adjuster is simple, and power transmission is clear and definite;
6th, plain concrete, armored concrete, steel member, steel reinforced concrete component, compound section component inhomogeneity can be effectively adapted to The beam element of type, strip unit, pole unit etc.;
7th, installation method is simple, and different component only need to can realize live quick assembling by bolt or lock screw connection;
8th, design is split as different parts, is easy to load and unload and transports;
9th, site installation test process only needs manually complete using spanner, is easy to carry out fast velocity modulation according to experiment different demands Section;
10th, whole experimental rig recoverable, after the completion of use, detachably, need to be used for other scene progress according to follow-up Assembling and experiment.
11st, Reusability can be circulated for a long time, and durability durability is higher.
In addition, according to said structure design, the present invention can use tests below method vertical to be provided for concrete sample 5 To, rotational restraint and civil engineering structure experiment is carried out, a kind of longitudinal direction, rotational stiffness are from constraining and self-balancing experiment side Method, include following steps, specifically:
A, above-mentioned experimental rig is installed on the workbench of forcing press, and concrete sample 5 is positioned over Left-side support steel Between beam 11 and Right side support girder steel 12, the front side test specimen for being put in front side test specimen support plate 311 is taken in the leading section of concrete sample 5 The upper surface of support 31111, the rearward end of concrete sample 5 take the rear side test specimen support for being put in rear side test specimen support plate 321 32111 upper surfaces;Wherein, the surface mount of concrete sample 5 or interior resistance strain plate, sinusoid strain gauge, optical fiber are embedded with Grating strain meter, the surface of concrete sample 5 are provided with LVDT displacement transducers, front end face, the rear end face point of concrete sample 5 Piezoelectric ceramic piece, the piezoelectric ceramic piece of the front end face of concrete sample 5 and the piezoelectric ceramic piece of rear end face are not installed to arrangement;
B, by front side rotational restraint oil cylinder 313, rear side rotational restraint oil cylinder 323, front side longitudinal restraint oil cylinder 415, rear side longitudinal direction Constraint oil cylinder 425 is connected with servo pump station respectively, and servo pump station, each pressure sensor, resistance strain plate, sinusoid are answered Become meter, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece to be connected with acquisition system and computer respectively;
C, longitudinal restraint power, the rotational restraint power of concrete sample 5 are set according to test requirements document, then starts front side rotational restraint Oil cylinder 313, rear side rotational restraint oil cylinder 323, front side longitudinal restraint oil cylinder 415, rear side longitudinal restraint oil cylinder 425, and by preceding Side rotational restraint oil cylinder 313, rear side rotational restraint oil cylinder 323 apply rotation respectively to the leading section of concrete sample 5, rearward end Restraining force, and by front side longitudinal restraint oil cylinder 415, rear side longitudinal restraint oil cylinder 425 to the front end face of concrete sample 5, after End face applies longitudinal restraint power respectively;Front side rotational restraint oil cylinder 313, rear side rotational restraint oil cylinder 323, front side longitudinal restraint oil Cylinder 415, rear side longitudinal restraint oil cylinder 425 are consistent with experiment setup parameter to the pressure of concrete sample 5;
D, front side rotational restraint oil cylinder 313, rear side rotational restraint oil cylinder 323, front side longitudinal restraint oil cylinder 415, rear side longitudinal direction are treated After constraint oil cylinder 425 forces in concrete sample 5, start forcing press and concrete sample 5 is preloaded;
E, after the completion for the treatment of preloading action, off-load is carried out;
F, after treating pre-add loading and unloading, concrete sample 5 is formally loaded by forcing press, and is divided according to tester Level progressively load and accordingly hold lotus, in the process, by resistance strain plate, sinusoid strain gauge, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece collection concrete sample 5 corresponding strain, displacement, crack and deformation data, on Data transfer is stated into acquisition system and computer;
G, until concrete sample 5 destroys, experiment loading is completed, and last acquisition system and computer are handled test data Analysis.
It is emphasized that rapidly and accurately can to provide longitudinal direction, rotational restraint for concrete sample 5 firm for above-mentioned test method Spend and carry out civil engineering structure experiment.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's Thought, there will be changes, this specification content should not be construed as to the present invention in specific embodiments and applications Limitation.

Claims (6)

1. a kind of longitudinal direction, rotational stiffness constrain certainly and self-balancing experimental rig, it is characterised in that:Include is in be vertically arranged respectively And respectively along the horizontal-extending Left-side support girder steel of fore-and-aft direction(11), Right side support girder steel(12), Left-side support girder steel (11)Positioned at Right side support girder steel(12)Left end side and Left-side support girder steel(11)With Right side support girder steel(12)Face interval Arrangement, Left-side support girder steel(11)Upper surface and Right side support girder steel(12)The horizontal flush arrangement in upper surface, Left-side support Girder steel(11)Lower surface and Right side support girder steel(12)Lower surface horizontal parallel arrangement;
Left-side support girder steel(11)With Right side support girder steel(12)Between be equiped with front side girder steel arm-tie component(21), positioned at front side Girder steel arm-tie component(21)Rear end side and with front side girder steel arm-tie component(21)Spaced apart rear side girder steel arm-tie component(22); Front side girder steel arm-tie component(21)Include and be located at Left-side support girder steel(11), Right side support girder steel(12)Lower end side and along a left side The horizontal-extending front side lower end girder steel arm-tie of right direction(211)And positioned at Left-side support girder steel(11), Right side support girder steel (12)Upper end side and along the horizontal-extending front side upper end girder steel arm-tie of left and right directions(212), front side upper end girder steel arm-tie(212) Positioned at front side lower end girder steel arm-tie(211)Surface, front side lower end girder steel arm-tie(211)Left part, front side upper end girder steel Arm-tie(212)Left part extend respectively to Left-side support girder steel(11)Left end side, front side lower end girder steel arm-tie(211)The right side End, front side upper end girder steel arm-tie(212)Right part extend respectively to Right side support girder steel(12)Right-hand member side, Left-side support Girder steel(11)Upper surface in front side upper end girder steel arm-tie(212)Underface take and be placed with the front side left end column that is vertically arranged (213), Right side support girder steel(12)Upper surface in front side upper end girder steel arm-tie(212)Underface take and be placed with being vertically arranged Front side right-hand member column(214), front side left end column(213)With front side right-hand member column(214)Contour arrangement;Front side lower end girder steel Arm-tie(211)Left part and front side upper end girder steel arm-tie(212)Left part pass through in the bolt connection being vertically arranged, front side Lower end girder steel arm-tie(211)Right part and front side upper end girder steel arm-tie(212)Right part also by the spiral shell being vertically arranged Tether and connect, front side left end column(213)It is clamped in Left-side support girder steel(11)With front side upper end girder steel arm-tie(212)Between, it is preceding Side right-hand member column(214)It is clamped in Right side support girder steel(12)With front side upper end girder steel arm-tie(212)Between;
Rear side girder steel arm-tie component(22)Include and be located at Left-side support girder steel(11), Right side support girder steel(12)Lower end side and edge The horizontal-extending rear side lower end girder steel arm-tie of left and right directions(221)And positioned at Left-side support girder steel(11), Right side support steel Beam(12)Upper end side and along the horizontal-extending rear side upper end girder steel arm-tie of left and right directions(222), rear side upper end girder steel arm-tie (222)Positioned at rear side lower end girder steel arm-tie(221)Surface, rear side lower end girder steel arm-tie(221)Left part, rear side upper end Girder steel arm-tie(222)Left part extend respectively to Left-side support girder steel(11)Left end side, rear side lower end girder steel arm-tie(221) Right part, rear side upper end girder steel arm-tie(222)Right part extend respectively to Right side support girder steel(12)Right-hand member side, left side Support steel beam(11)Upper surface in rear side upper end girder steel arm-tie(222)Underface take and be placed with the rear side left end that is vertically arranged Column(223), Right side support girder steel(12)Upper surface in rear side upper end girder steel arm-tie(222)Underface take and be placed with vertical The rear side right-hand member column of arrangement(224), rear side left end column(223)With rear side right-hand member column(224)Contour arrangement;Rear side lower end Girder steel arm-tie(221)Left part and rear side upper end girder steel arm-tie(222)Left part by the bolt connection being vertically arranged, Rear side lower end girder steel arm-tie(221)Right part and rear side upper end girder steel arm-tie(222)Right part also by being vertically arranged Bolt connection, rear side left end column(223)It is clamped in Left-side support girder steel(11)With rear side upper end girder steel arm-tie(222)It Between, rear side right-hand member column(224)It is clamped in Right side support girder steel(12)With rear side upper end girder steel arm-tie(222)Between;
Left-side support girder steel(11)Leading section and Right side support girder steel(12)Leading section between be equiped with positioned at front side girder steel Arm-tie component(21)The front side rotational restraint component of front(31), positioned at front side rotational restraint component(31)The front side of front Longitudinal restraint component(41), Left-side support girder steel(11)Rearward end and Right side support girder steel(12)Rearward end between be equiped with Positioned at rear side girder steel arm-tie component(22)The rear side rotational restraint component of rear end side(32), positioned at rear side rotational restraint component(32) The rear side longitudinal restraint component of rear end side(42);Front side rotational restraint component(31)Include front side test specimen support plate(311)With And positioned at Left-side support girder steel(11), girder steel upper end side and along the horizontal-extending front side oil cylinder installation of left and right directions on the left of right side Plate(312), front side oil cylinder installing plate(312)Positioned at front side test specimen support plate(311)Surface, front side oil cylinder installing plate (312)Left part extend to Left-side support girder steel(11)Left end side and front side oil cylinder installing plate(312)Right part extension To Right side support girder steel(12)Right-hand member side, front side test specimen support plate(311)Include the front side support plate main body in " n " shape (3111), front side support plate main body(3111)Include and Left-side support girder steel is arranged and be located in horizontal cross(11)With right side branch Support girder steel(12)Between front side test specimen support(31111), front side support plate main body(3111)Left part be welded and have towards a left side Side extends horizontally to Left-side support girder steel(11)The front side support plate left end connecting portion of left end side(3112), front side support plate main body (3111)Right part be welded and extend horizontally to Right side support girder steel towards right side(12)The front side support plate right-hand member of right-hand member side connects Socket part(3113), front side test specimen support plate(311)Front side support plate left end connecting portion(3112)With front side oil cylinder installing plate (312)Left part pass through in the bolt connection being vertically arranged, front side test specimen support plate(311)The connection of front side support plate right-hand member Portion(3113)With front side oil cylinder installing plate(312)Right part also by the bolt connection being vertically arranged;Front side oil cylinder installation Plate(312)The centre position of upper surface is screwed with the front side rotational restraint oil cylinder of up and down action(313), front side rotational restraint oil cylinder (313)Piston rod pass through front side oil cylinder installing plate(312)And extend to front side oil cylinder installing plate(312)Lower end side;
Rear side rotational restraint component(32)Include rear side test specimen support plate(321)And positioned at Left-side support girder steel(11), it is right Girder steel upper end side and along the horizontal-extending rear side oil cylinder installing plate of left and right directions on the left of side(322), rear side oil cylinder installing plate (322)Positioned at rear side test specimen support plate(321)Surface, rear side oil cylinder installing plate(322)Left part extend to left side prop up Support girder steel(11)Left end side and rear side oil cylinder installing plate(322)Right part extend to Right side support girder steel(12)Right-hand member Side, rear side test specimen support plate(321)Include the rear side support plate main body in " n " shape(3211), rear side support plate main body (3211)Include and Left-side support girder steel is arranged and be located in horizontal cross(11)With Right side support girder steel(12)Between rear side Test specimen support(32111), rear side test specimen support(32111)Bearing-surface and front side test specimen support(31111)Supporting Face is horizontal concordant, rear side support plate main body(3211)Left part be welded and extend horizontally to Left-side support girder steel towards left side(11) The rear side support plate left end connecting portion of left end side(3212), rear side support plate main body(3211)Right part be welded and have towards right side water It is flat to extend to Right side support girder steel(12)The rear side support plate right-hand member connecting portion of right-hand member side(3213), rear side test specimen support plate (321)Rear side support plate left end connecting portion(3212)With rear side oil cylinder installing plate(322)Left part by being vertically arranged Bolt connection, rear side test specimen support plate(321)Rear side support plate right-hand member connecting portion(3213)With rear side oil cylinder installing plate (322)Right part also by the bolt connection being vertically arranged;Rear side oil cylinder installing plate(322)The centre position spiral shell of upper surface Rear side rotational restraint oil cylinder equipped with up and down action(323), rear side rotational restraint oil cylinder(323)Piston rod pass through rear side oil cylinder Installing plate(322)And extend to rear side oil cylinder installing plate(322)Lower end side;
Front side longitudinal restraint component(41)Include and be located at front side test specimen support plate(311)The front side component plate support plate of front (411), positioned at front side component plate support plate(411)The front side restained beam support plate of front(412), front side component plate support plate (411), front side restained beam support plate(412)It is located at Left-side support girder steel respectively(11)Leading section and Right side support girder steel(12) Leading section between, front side component plate support plate(411), front side restained beam support plate(412)Left part pass through locking respectively Screw spiral shell, which loads, is fixed in Left-side support girder steel(11)Bottom, front side component plate support plate(411), front side restained beam support plate (412)Right part loaded by lock screw spiral shell be fixed in Right side support girder steel respectively(12)Bottom;Front side component plate branch Board(411)Upper surface take and be placed with the front side activity component plate that is vertically arranged(413), front side restained beam support plate(412) Upper surface take and be placed with the front side longitudinal restraint beam that is vertically arranged(414), front side longitudinal restraint beam(414)The centre on preceding surface Position is screwed with the front side longitudinal restraint oil cylinder of anterior-posterior horizontal action(415), front side longitudinal restraint oil cylinder(415)Piston rod outside Prolong end and pass through front side longitudinal restraint beam(414)And extend to front side longitudinal restraint beam(414)Rear end side, front side longitudinal restraint Beam(414)Rear end side be equiped with and front side longitudinal restraint oil cylinder(415)Piston rod extension end connection front side force transmitting board (416), front side force transmitting board(416)Rearward end and front side activity component plate(413)Contact, front side activity component plate(413)Spiral shell Equipped with uniform intervals distribution and respectively along the horizontal-extending front side power transmission bolt of fore-and-aft direction(417), each front side power transmission spiral shell Bolt(417)Rearward end extend respectively to the movable component plate in front side(413)Rear end side;Left-side support girder steel(11)Leading section Right flank is screwed with front side left end bearing(418), Right side support girder steel(12)The left surface of leading section is screwed with front side right-hand member branch Seat(419), front side left end bearing(418), front side right-hand member bearing(419)It is located at front side longitudinal restraint beam respectively(414)Front end Side, when front side longitudinal restraint oil cylinder(415)Act and force in concrete sample(5)During front end face, front side left end bearing (418), front side right-hand member bearing(419)Respectively with front side longitudinal restraint beam(414)Abut;
Rear side longitudinal restraint component(42)Include and be located at rear side test specimen support plate(321)The rear side component plate support plate of rear end side (421), positioned at rear side component plate support plate(421)The rear side restained beam support plate of rear end side(422), rear side component plate support plate (421), rear side restained beam support plate(422)It is located at Left-side support girder steel respectively(11)Rearward end and Right side support girder steel(12) Rearward end between, rear side component plate support plate(421), rear side restained beam support plate(422)Left part pass through locking respectively Screw spiral shell, which loads, is fixed in Left-side support girder steel(11)Bottom, rear side component plate support plate(421), rear side restained beam support plate (422)Right part loaded by lock screw spiral shell be fixed in Right side support girder steel respectively(12)Bottom;Rear side component plate branch Board(421)Upper surface take and be placed with the rear side activity component plate that is vertically arranged(423), rear side restained beam support plate(422) Upper surface take and be placed with the rear side longitudinal restraint beam that is vertically arranged(424), rear side longitudinal restraint beam(424)The centre on surface afterwards Position is screwed with the rear side longitudinal restraint oil cylinder of anterior-posterior horizontal action(425), rear side longitudinal restraint oil cylinder(425)Piston rod outside Prolong end and pass through rear side longitudinal restraint beam(424)And extend to rear side longitudinal restraint beam(424)Front, rear side longitudinal restraint Beam(424)Front be equiped with and rear side longitudinal restraint oil cylinder(425)Piston rod extension end connection rear side force transmitting board (426), rear side force transmitting board(426)Leading section and rear side activity component plate(423)Contact, rear side activity component plate(423)Spiral shell Equipped with uniform intervals distribution and respectively along the horizontal-extending rear side power transmission bolt of fore-and-aft direction(427), each rear side power transmission spiral shell Bolt(427)Leading section extend respectively to the movable component plate of rear side(423)Front;Left-side support girder steel(11)Rearward end Right flank is screwed with rear side left end bearing(428), Right side support girder steel(12)The left surface of rearward end is screwed with rear side right-hand member branch Seat(429), rear side left end bearing(428), rear side right-hand member bearing(429)It is located at rear side longitudinal restraint beam respectively(424)Rear end Side, when rear side longitudinal restraint oil cylinder(425)Act and force in concrete sample(5)During rear end face, rear side left end bearing (428), rear side right-hand member bearing(429)Respectively with rear side longitudinal restraint beam(424)Abut.
2. a kind of longitudinal direction according to claim 1, rotational stiffness constrains certainly and self-balancing experimental rig, it is characterised in that: The front side rotational restraint oil cylinder(313)Piston rod extension end be equiped with pressure sensor, the rear side rotational restraint oil Cylinder(323)Piston rod extension end be also equiped with pressure sensor.
3. a kind of longitudinal direction according to claim 1, rotational stiffness constrains certainly and self-balancing experimental rig, it is characterised in that: The front side longitudinal restraint oil cylinder(415)Piston rod extension end and the front side force transmitting board(416)Between be equiped with pressure Sensor, the rear side longitudinal restraint oil cylinder(425)Piston rod extension end and the rear side force transmitting board(426)Between also fill Provided with pressure sensor.
4. a kind of longitudinal direction according to claim 1, rotational stiffness constrains certainly and self-balancing experimental rig, it is characterised in that: The front side activity component plate(413)Front end face offer up and down completely through and cross section semicircular in shape shape front side component Plate groove(4131), the front side force transmitting board(416)Rear end face be arc surface, front side force transmitting board(416)Rearward end intercalation In front side activity component plate(413)Front side component plate groove(4131)It is interior.
5. a kind of longitudinal direction according to claim 4, rotational stiffness constrains certainly and self-balancing experimental rig, it is characterised in that: The rear side activity component plate(423)Rear end face offer up and down completely through and cross section semicircular in shape shape rear side component Plate groove(4231), the rear side force transmitting board(426)Front end face be arc surface, rear side force transmitting board(426)Leading section intercalation In rear side activity component plate(423)Rear side component plate groove(4231)It is interior.
6. a kind of longitudinal direction, rotational stiffness constrain certainly and self-balancing test method, it is characterised in that includes following steps, specifically 's:
A, the experimental rig described in claim 1-5 any one is installed on the workbench of forcing press, and by concrete Test specimen(5)It is positioned over Left-side support girder steel(11)With Right side support girder steel(12)Between, concrete sample(5)Leading section take and put In front side test specimen support plate(311)Front side test specimen support(31111)Upper surface, concrete sample(5)Rearward end take and put In rear side test specimen support plate(321)Rear side test specimen support(32111)Upper surface;Wherein, concrete sample(5)Surface mount Or interior it is embedded with resistance strain plate, sinusoid strain gauge, fiber grating strain meter, concrete sample(5)Surface be provided with LVDT displacement transducers, concrete sample(5)Front end face, rear end face be separately installed with piezoelectric ceramic piece, concrete sample(5) The piezoelectric ceramic piece of front end face and the piezoelectric ceramic piece of rear end face are to arrangement;
B, by front side rotational restraint oil cylinder(313), rear side rotational restraint oil cylinder(323), front side longitudinal restraint oil cylinder(415), after Side longitudinal restraint oil cylinder(425)Be connected respectively with servo pump station, and by servo pump station, each pressure sensor, resistance strain plate, Sinusoid strain gauge, fiber grating strain meter, LVDT displacement transducers and piezoelectric ceramic piece respectively with acquisition system and calculating Machine connects;
C, concrete sample is set according to test requirements document(5)Longitudinal restraint power, rotational restraint power, then start front side rotate about Beam oil cylinder(313), rear side rotational restraint oil cylinder(323), front side longitudinal restraint oil cylinder(415), rear side longitudinal restraint oil cylinder (425), and pass through front side rotational restraint oil cylinder(313), rear side rotational restraint oil cylinder(323)To concrete sample(5)Front end Portion, rearward end apply rotational restraint power respectively, and pass through front side longitudinal restraint oil cylinder(415), rear side longitudinal restraint oil cylinder(425) To concrete sample(5)Front end face, rear end face apply longitudinal restraint power respectively;Front side rotational restraint oil cylinder(313), rear side turn Moving constraint oil cylinder(323), front side longitudinal restraint oil cylinder(415), rear side longitudinal restraint oil cylinder(425)To concrete sample(5)'s Pressure is consistent with experiment setup parameter;
D, front side rotational restraint oil cylinder is treated(313), rear side rotational restraint oil cylinder(323), front side longitudinal restraint oil cylinder(415), after Side longitudinal restraint oil cylinder(425)Force in concrete sample(5)Afterwards, forcing press is started to concrete sample(5)Preloaded;
E, after the completion for the treatment of preloading action, off-load is carried out;
F, after treating pre-add loading and unloading, by forcing press to concrete sample(5)Formally loaded, and according to test plan Classification progressively loads and accordingly holds lotus, in the process, passes through resistance strain plate, sinusoid strain gauge, fiber grating strain Meter, LVDT displacement transducers and piezoelectric ceramic piece collection concrete sample(5)Corresponding strain, displacement, crack and change figurate number According in above-mentioned data transfer to acquisition system and computer;
G, until concrete sample(5)Destroy, experiment loading is completed, last acquisition system and computer to test data at Reason analysis.
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