CN104332086A - Structural mechanics experiment platform - Google Patents
Structural mechanics experiment platform Download PDFInfo
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- CN104332086A CN104332086A CN201410482981.8A CN201410482981A CN104332086A CN 104332086 A CN104332086 A CN 104332086A CN 201410482981 A CN201410482981 A CN 201410482981A CN 104332086 A CN104332086 A CN 104332086A
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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Abstract
The invention provides a structural mechanics experiment platform and belongs to the field of structural mechanics experiment teaching of the major of civil engineering. An upper cross beam, a lower cross beam, upright columns and tie beams form a space reflexive force loading frame through an assembling mode; an H-shaped steel beam in the upper cross beam, the lower cross beam and the web plates of the upright columns are each provided with a linear guide rail; the linear guide rails are provided with sliding dolly platforms, the sliding dolly platforms can be fixed at any positions of the linear guide rails; and an experiment model and a loading device are installed on the sliding dolly platforms. According to the invention, auxiliary devices such as a mobile short upright column, a constraint cross beam, an intermediate cross beam providing a horizontal counterforce and the like are configured, multiple constraints and multi-point multi-directional tensile compression loading on the experiment model are realized, and the quantity, the positions and the directions of constraint points and loading points and the dimensions of the experiment model are not restricted in an effective experiment space. The platform is of a space structure, the experiment space is open, the loading means are abundant, multiple groups of contrast experiments and autonomous design comprehensive experiments are carried out at the same time, and open experiment teaching is facilitated.
Description
Technical field
The invention belongs to civil engineering structural mechanics experimental teaching field, relate to a kind of structural mechanics experiment porch.
Background technology
Structural mechanics is required subject, the proper form of main research structure and the internal force of structure under stress, distortion, dynamic response and the elastic stability of institution of higher learning's civil engineering.The basic task of structural mechanics comprises following two aspects specifically:
(1) according to the functional requirement of structure, law of internal force distribution and geometry component law, the proper form of research structure is carried out.
(2) structural internal force, distortion, the theory of computation of dynamic response and stability aspect and method is researched and analysed.
All the time, the teaching method of institution of higher learning's structural mechanics mainly theory teaching.Due to the research object mainly member structure of structural mechanics, node and rod member are all simplified by ideal model, so the structure in engineering reality seems often to greatly differ from each other with the simplified mathematical model in structural mechanics.Have students' union unavoidably not understand and even suspect some basic assumptions in structural mechanics and concept, Students ' Engineering also can be caused to be familiar with and the disconnection of theory cognition.Along with higher education is to the attention of experimental teaching, carrying out structural mechanics experiment is a kind of imperative trend, but be limited by present and lack the teaching equipment that energy system completes structural mechanics related experiment, make most colleges and universities all not carry out the experimental teaching of structural mechanics course.For a change this present situation, the invention provides a kind of Teaching of Structural Mechanics platform, various structures mechanical model all can be tested on the platform, and energy system completes the associated verification experiment of structural mechanics basic theories, and can carry out some synthesis and designing.
Summary of the invention
Can only carry out the shortcoming of testing for a kind of model to overcome existing structural mechanics experiment porch, the present invention aims to provide a kind of structural mechanics experiment porch, and various structures mechanical model all can be tested on the platform.
The invention provides a kind of structural mechanics experiment porch, this structural mechanics experiment porch comprises crossbeam, column, mobile short column, constraint crossbeam and linking beam; Crossbeam comprises entablature, sill, auxiliary entablature, auxiliary sill and intermediate transverse girder; Sill adopts H profile steel beam, entablature adopts the unitized construction of H profile steel beam-ball node steel pipe truss composition, entablature is connected with four linking beams by four root posts with sill, between two columns, intermediate transverse girder is installed, sill is furnished with mobile short column, constraint crossbeam is housed between entablature and sill; Linking beam comprises linking beam and lower linking beam, upper linking beam and lower linking beam distinguishes the adjustable auxiliary entablature in installation site and auxiliary sill, forms the loading experiment platform of a Space Reflexive power.
Line slideway is equipped with at the H profile steel beam of described entablature and auxiliary entablature, sill, auxiliary sill, column, mobile short column, line slideway is arranged on the inside of H profile steel, line slideway is installed sliding machine platform, sliding machine platform may be locked in the optional position of line slideway.
Described auxiliary entablature and entablature all adopt H profile steel beam-ball node steel pipe truss unitized construction form, and described auxiliary sill and sill all adopt H profile steel beam.
The short column of described movement is free to slide along the line slideway on sill and locates.
The intermediate transverse girder of horizontal reacting force fixing according to modulus continuously adjustabe on column is provided.
The invention has the beneficial effects as follows: various structures mechanical model all can be tested on the platform, achieves diversification utilization; This platform is space structure, can carry out the experiment of various structures mechanical model simultaneously, be conducive to carrying out control experiment; This platform accessible site model of structural mechanics, charger, measurement mechanism, realize integration, simple and practical; Sliding machine platform can carry out moving and fixing as required, and experimental subjects does not limit by size in effective lab space of loading frame, applied widely; This platform also can be used for the experiment of space-filling model, can realize multiple spot simultaneously, multi-direction pressure loads, and the position of load(ing) point, quantity and direction is unrestricted, are convenient to carry out some synthesis and designing.
Accompanying drawing explanation
Fig. 1 is platform front elevation of the present invention.
Fig. 2 is platform side view of the present invention.
Fig. 3 is platform vertical view of the present invention.
Fig. 4 is triangular truss Experimental equipment of the present invention.
In figure: 1 ball node steel pipe truss; 2 entablatures; 3 sills; 4 columns; 5 bases; Linking beam on 6; 7 times linking beams; 8 line slideways; 9 sliding machine platforms; 10 beam-to-column joint plates; 11 web joints; 12 auxiliary entablatures; 13 auxiliary sills; 14 brake shoes; 15 intermediate transverse girders; 16 move short column; 17 constraint crossbeams; 18 triangular truss models; 19 model bearings; 20 helical turbine load maintainers; 21 load bars; 22 load transducers.
Embodiment
Below in conjunction with accompanying drawing and embodiment, embodiments of the present invention are described further.
The invention provides a kind of structural mechanics experiment porch, comprise crossbeam, column, mobile short column, constraint crossbeam, linking beam, base and sliding machine platform; Wherein,
Crossbeam comprises entablature, sill, auxiliary entablature, auxiliary sill and intermediate transverse girder.Entablature and auxiliary entablature are as load crossbeam, for improving its rigidity, adopt H profile steel beam-ball node steel pipe truss unitized construction, this H profile steel beam-ball node steel pipe truss unitized construction is also as the empirical model of research unitized construction internal force distribution, distortion under load effect simultaneously.Ball node steel pipe truss adopts metal circular tube and ball pivot node to be formed by connecting, and comprises four top booms, six roots of sensation lower boom, five montants and six roots of sensation brace.Ball node steel pipe truss is isosceles trapezoid, is connected to each other in " W " shape between brace.Be welded with web joint between two edges of a wing of H profile steel beam, be connected with the ball pivot node on ball node steel pipe truss lower boom by bolt, form entablature.The structure of auxiliary entablature is identical with entablature.Sill is identical with auxiliary Lower Crossbeam Structure, all adopts H profile steel beam.On the web of the H profile steel beam of entablature and auxiliary entablature, sill, auxiliary sill, the H profile steel beam of entablature and the side of sill be equipped with line slideway, and sliding machine platform can linearly move and can lock at an arbitrary position by guide rail.In addition, be equipped with floor bottom the H profile steel beam in entablature and auxiliary entablature, sill, auxiliary sill, ensure its resistance to overturning.Intermediate transverse girder structure is identical with sill, and its two ends are connected with uprights vertical by bolt, and is vertical relation with entablature, sill.In addition, intermediate transverse girder can be fixed along column at diverse location.The Main Function of crossbeam is supporting construction mechanical model and loading equipemtn, and provides constraint reaction.
Column: column is vertically connected with the H profile steel beam in entablature and sill two ends respectively.Be provided with line slideway inside column, offside arranges floor; Inside column, the edge of a wing has screw, for fixing intermediate transverse girder.According to the needs of different structure mechanical model, column also has the effect of supporting construction mechanical model and loading equipemtn.
Mobile short column: mobile short pillar construction is identical with column, is connected, and is placed on the line slideway of sill by bolt with sliding machine platform.Mobile short column can move, for supporting small-scale structure and loading equipemtn on sill.
Constraint crossbeam: constraint crossbeam is identical with the structure of sill, constraint crossbeam two ends are bolted on sliding machine platform, sliding machine platform is connected on the line slideway of H profile steel beam in entablature and sill side, can move horizontally along line slideway.Retraining horizontal beam action is place measuring equipment, and can provide sidewise restraint to structural model, prevents the outer unstability of plane.
Linking beam: linking beam is i shaped cross section beam, comprises linking beam and lower linking beam, all arranges floor in web both sides.Upper linking beam is connected with column two ends respectively with lower linking beam, is mainly used in the loading frame of two Pin planes to connect into space loading frame, and linking beam height can be pressed modulus along column and regulate.The flank listrium of upper linking beam and lower linking beam there is bolt hole, in order to loading test can be carried out to empirical model in space, upper linking beam installs auxiliary entablature by bolt, lower linking beam installs auxiliary sill, to form the abundanter space weighted platform of value-added tax function by bolt.
Base: base is formed by connecting by base plate and rectangular steel plates.Sill two ends are overlapped on base, make weighted platform leave ground certain altitude, the observation of the assembling of model during convenient experiment, load operation and experimental phenomena.
Sliding machine platform: sliding machine platform comprises landing slab, four bearing sliders and brake shoes, its major function is the optional position bearing of structural model and load(ing) point being fixed on line slideway, and quantity, position are unrestricted.Bearing slider is arranged on line slideway, still can linearly slide under high pressure effect, and landing slab is bolted on bearing slider, in addition landing slab is processed with bolt hole, for syndeton mechanical model and charger.Sliding machine platform is provided with brake shoes, after adjusting sliding machine position of platform, just can fix sliding machine platform by locking sliding machine platform brake shoes.
Loading frame installation diagram as shown in Figure 1, Figure 2 and Figure 3, first by beam-to-column joint plate 10, two root posts 4 and entablature 2, sill 3 are connected into the plane framework of two Pin rectangles, then by two upper linking beams 6 and two lower linking beams 7, two Pin plane frameworks are connected into a space frame.This space frame is arranged on base 5 by sill 3.For meeting installation and the loading demand of different size experimental subjects, lower linking beam 7 installs two auxiliary sills 13, upper linking beam 6 installs two auxiliary entablatures 12, they all can be fixed in the optional position of upper linking beam 6 and lower linking beam 7, have mainly coordinated the loading experiment of space structure (as bridge model, space grid structure etc.).Two auxiliary sill 13 spacing can adjust accordingly according to test specimen size, can install differing heights, different types of bearing, to meet the carrying out of various experiment on auxiliary sill 13.H profile steel beam in entablature 2, sill 3, column 4, auxiliary entablature 12, auxiliary sill 13, intermediate transverse girder 15, constraint crossbeam 17 and mobile short column 16 all install line slideway 8, guide rail is hidden in shaped steel inside, guide rail is installed moveable sliding machine platform 9, sliding machine platform 9 can install model bearing, load cylinder etc., and can be locked on line slideway by brake shoes 14, and then realize multiple spot, the loading of multi-direction pressure.Sill 3 is equipped with a short column 16 of movement, and version is identical with column 4.Mobile short column 16 is arranged on sliding machine platform 9 by bolt, can move, and can be fixed on the optional position of sill 3, for supporting small-scale structure and loading equipemtn along sill 3.Horizontal load is applied for convenience of to spatial model, the intermediate transverse girder 15 that one provides horizontal reacting force is installed between two columns 4 that two Pin frameworks are adjacent, the level altitude of intermediate transverse girder 15 between two columns is according to modulus continuously adjustabe, and in its side, line slideway 8 is housed, in its optional position, model bearing and charger can be installed, to facilitate, Space Experiments model be applied to horizontal load, provides horizontal restraint.For convenience of the installation of measuring equipment, avoiding the outer unstability of the structural mechanics empirical model of plane generating plane when loading, ensureing that experimental subjects keeps plane internal deformation state when loading, constraint crossbeam 17 is installed in the side of entablature 2, sill 3.Its implementation is: install horizontal linear guide rail 8 in the side of entablature 2, sill 3, constraint crossbeam 17 is arranged on the side horizontal line slideway 8 of entablature 2, sill 3 by sliding machine platform 9, and can move horizontally along horizontal linear guide rail 8.
In ins and outs, for ensureing rigidity and the component partial bearing capacity of experimental provision, the unitized construction that entablature 2 adopts H profile steel beam and ball node steel pipe truss 1 to form, to improve its rigidity, ensure that the distortion of component is no more than 1/1000 of span, meet the principle of charger needs according to rigidity Design on the one hand, ensure that the distortion that line slideway 8 produces can not affect sliding machine platform 9 being free to slide on line slideway 8 on the other hand.Adopt web joint 11 to be connected for upper linking beam 6, lower linking beam 7 and column 4 connecting portion, to increase the reliability of connection, ensure the integral rigidity of structure.H profile steel beam in column 4, entablature 2, sill 3, on the component such as linking beam 6, lower linking beam 7 web with all weld some square floors of putting more energy between the edge of a wing, to ensure that the bearing capacity of component meets design requirement.
Fig. 4 is triangular truss Experimental equipment, triangular truss model 18 is fixed on sliding machine platform 9 by model bearing 19, load(ing) point is connected with helical turbine load maintainer 20 by load bar 21, helical turbine load maintainer 20 is fixed on by sliding machine platform 9 on the H profile steel beam in entablature 2, and load transducer 22 is arranged between helical turbine load maintainer 20 and load bar 21.Constraint crossbeam 17 is used for ensureing that plane triangle truss keeps plane deformation when loading, and installation position displacement sensor is used for measuring the local deformation of structural model simultaneously.During experiment, loaded by helical turbine load maintainer 20, utilize load transducer 22 to read added load, measure strain size by the foil gauge on model rod member, thus realize the Experimental Research of triangular truss model.
Claims (8)
1. a structural mechanics experiment porch, is characterized in that, this structural mechanics experiment porch comprises crossbeam, column, mobile short column, constraint crossbeam and linking beam; Crossbeam comprises entablature, sill, auxiliary entablature, auxiliary sill and intermediate transverse girder; Sill adopts H profile steel beam, entablature adopts the unitized construction of H profile steel beam-ball node steel pipe truss composition, entablature is connected with four linking beams by four root posts with sill, between two columns, intermediate transverse girder is installed, sill is furnished with mobile short column, constraint crossbeam is housed between entablature and sill; Linking beam comprises linking beam and lower linking beam, upper linking beam and lower linking beam distinguishes the adjustable auxiliary entablature in installation site and auxiliary sill, forms the loading experiment platform of a Space Reflexive power.
2. structural mechanics experiment porch according to claim 1, it is characterized in that, the H profile steel beam of entablature and auxiliary entablature, sill, auxiliary sill, column, mobile short column are equipped with line slideway, line slideway is arranged on the inside of H profile steel, line slideway is installed sliding machine platform, sliding machine platform may be locked in the optional position of line slideway.
3. structural mechanics experiment porch according to claim 1 and 2, is characterized in that, described auxiliary entablature and entablature all adopt H profile steel beam-ball node steel pipe truss unitized construction form, and described auxiliary sill and sill all adopt H profile steel beam.
4. structural mechanics experiment porch according to claim 1 and 2, is characterized in that, mobile short column is free to slide along the line slideway on sill and locates.
5. structural mechanics experiment porch according to claim 3, is characterized in that, mobile short column is free to slide along the line slideway on sill and locates.
6. the structural mechanics experiment porch according to claim 1,2 or 5, is characterized in that, provides the intermediate transverse girder of horizontal reacting force fixing according to modulus continuously adjustabe on column.
7. structural mechanics experiment porch according to claim 3, is characterized in that, provides the intermediate transverse girder of horizontal reacting force fixing according to modulus continuously adjustabe on column.
8. structural mechanics experiment porch according to claim 4, is characterized in that, provides the intermediate transverse girder of horizontal reacting force fixing according to modulus continuously adjustabe on column.
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| CN105243934A (en) * | 2015-10-27 | 2016-01-13 | 大连理工大学 | Teaching experiment device making force method visualized |
| CN105931524A (en) * | 2016-07-06 | 2016-09-07 | 江苏建筑职业技术学院 | Space frame engineering hazard source identification experience area and construction method thereof |
| CN105957428A (en) * | 2016-07-07 | 2016-09-21 | 哈尔滨工业大学（威海） | Structural mechanic experiment device for drawing multi-span beam influence line through kinematic method and structural mechanic experiment method thereof |
| CN105989765A (en) * | 2015-02-11 | 2016-10-05 | 福建农林大学 | Rod piece deformation teaching instrument and usage method thereof |
| CN106205354A (en) * | 2016-09-23 | 2016-12-07 | 大连理工大学 | The experiment device for teaching of a kind of checking zero bar effect in truss Instability and experimental technique |
| CN108287113A (en) * | 2018-02-09 | 2018-07-17 | 西南交通大学 | A kind of testing equipment for ring component in slope protection structure |
| CN109920310A (en) * | 2019-03-28 | 2019-06-21 | 南宁职业技术学院 | A kind of the simple teaching experimental provision and its measurement method of measurement structure internal force |
| CN110031247A (en) * | 2019-05-09 | 2019-07-19 | 华东交通大学 | Bridge incremental launching imitative experimental appliance |
| CN110827655A (en) * | 2018-11-27 | 2020-02-21 | 合肥工业大学 | Test loading device of assembled structure model |
| CN111554158A (en) * | 2020-05-27 | 2020-08-18 | 大连理工大学 | Portable truss structure experimental device |
| CN111678802A (en) * | 2020-06-28 | 2020-09-18 | 烟台大学 | Double-arm bending and twisting combined experimental method and device |
| CN111932998A (en) * | 2020-08-11 | 2020-11-13 | 南京航空航天大学 | Plane truss comprehensive experiment device |
| CN108287113B (en) * | 2018-02-09 | 2024-06-04 | 西南交通大学 | Test equipment for ring member in slope protection structure |
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| CN105989765A (en) * | 2015-02-11 | 2016-10-05 | 福建农林大学 | Rod piece deformation teaching instrument and usage method thereof |
| CN105989765B (en) * | 2015-02-11 | 2019-03-12 | 福建农林大学 | Rod piece deformation Teaching instrument and its application method |
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| CN105243934B (en) * | 2015-10-27 | 2017-11-10 | 大连理工大学 | A kind of experiment device for teaching for intuitively changing force method |
| CN105931524A (en) * | 2016-07-06 | 2016-09-07 | 江苏建筑职业技术学院 | Space frame engineering hazard source identification experience area and construction method thereof |
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| CN110827655A (en) * | 2018-11-27 | 2020-02-21 | 合肥工业大学 | Test loading device of assembled structure model |
| CN109920310A (en) * | 2019-03-28 | 2019-06-21 | 南宁职业技术学院 | A kind of the simple teaching experimental provision and its measurement method of measurement structure internal force |
| CN109920310B (en) * | 2019-03-28 | 2024-01-26 | 南宁职业技术学院 | Simple teaching experiment device for measuring internal force of structure and measuring method thereof |
| CN110031247A (en) * | 2019-05-09 | 2019-07-19 | 华东交通大学 | Bridge incremental launching imitative experimental appliance |
| CN111554158A (en) * | 2020-05-27 | 2020-08-18 | 大连理工大学 | Portable truss structure experimental device |
| WO2021237999A1 (en) * | 2020-05-27 | 2021-12-02 | 大连理工大学 | Portable truss structure experimental apparatus |
| CN111678802A (en) * | 2020-06-28 | 2020-09-18 | 烟台大学 | Double-arm bending and twisting combined experimental method and device |
| CN111932998A (en) * | 2020-08-11 | 2020-11-13 | 南京航空航天大学 | Plane truss comprehensive experiment device |
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