CN204791772U - Articulated slab beam bridge atress experiment teaching system - Google Patents
Articulated slab beam bridge atress experiment teaching system Download PDFInfo
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- CN204791772U CN204791772U CN201520494689.8U CN201520494689U CN204791772U CN 204791772 U CN204791772 U CN 204791772U CN 201520494689 U CN201520494689 U CN 201520494689U CN 204791772 U CN204791772 U CN 204791772U
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- beam bridge
- articulated slab
- slab beam
- bridge
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Abstract
The utility model discloses an articulated slab beam bridge atress experiment teaching system, personally experience sth. Part of the body and be used for the load system to articulated slab beam bridge emulation body load application including the emulation of articulated slab beam bridge, still include the detecting system who carries out force detection when the load is applyed, detecting system is at least including being used for detecting the amount of deflection detection device who meets an emergency detection device with be used for detecting beam bridge emulation body sag that beam bridge emulation body strain changes, can strengthen the characteristic to articulated slab beam bridge basic configuration, and rib, the board, the perceptual knowledge of articulated structure and articulated slab beam bridge support function and effect, can deepen and understand under the loading, biography among articulated slab beam bridge structural element power process and this bridge type's atress characteristic and internal force distribution situation, this teaching system of accessible calculates the horizontal distribution coefficient under the loading, and draw moment of flexure and amount of deflection influence line according to the experimental data, and then cultivate the analysis ability that the student carries out structural test's hands -on ability and scientific research.
Description
Technical field
The utility model relates to bridge structure teaching field, particularly the stressed experiment teaching system of a kind of articulated slab beam bridge.
Background technology
The construction of articulated slab beam bridge is simple and direct, quick, thus in highway in China and Urban Bridge, is used widely.Articulated slab beam bridge is referred to and is formed a whole by shear hinge by multi-disc plate-girder, and articulated slab beam bridge is when bearing mobile load, and the adjacent plate-girder directly not bearing automobile wheel load participates in co-operation more or less.The internal force that the adjacent two beam joint faces of articulated slab beam bridge transmit mainly contains vertical shear, longitudinal shear and moment of flexure, and above-mentioned data are parameters important during articulated slab beam bridge structure calculates.And in existing articulated slab beam bridge education experiment, lack the independent teaching aid for the study of articulated slab beam bridge, the equipment of testing by means of other bridge structures is often needed to carry out simple analog, not only simulate effect is bad, make student can not get information about articulated slab beam bridge basic structural characteristics, nor the structural property parameter of articulated slab beam bridge can be drawn targetedly, thus under load action can not being understood clearly again, the mechanical characteristic of the power transmission process in articulated slab beam bridge structure component and this bridge type and internal force distribution situation.
Therefore, need to propose the stressed experiment teaching system of a kind of articulated slab beam bridge, the simulated experiment of articulated slab girder construction and mechanical characteristic experiment can be carried out simultaneously, strengthen student to articulated slab beam bridge basic structural characteristics, and rib, plate, hinged structures and articulated slab beam bridge bearing Function and operation perceptual knowledge, can deepen under understanding load action, the mechanical characteristic of the power transmission process in articulated slab beam bridge structure component and this bridge type and internal force distribution situation.
Utility model content
In view of this, the utility model provides a kind of articulated slab beam bridge stressed experiment teaching system, the simulated experiment of articulated slab girder construction and mechanical characteristic experiment can be carried out simultaneously, strengthen student to articulated slab beam bridge basic structural characteristics, and rib, plate, hinged structures and articulated slab beam bridge bearing Function and operation perceptual knowledge, can deepen under understanding load action, the mechanical characteristic of the power transmission process in articulated slab beam bridge structure component and this bridge type and internal force distribution situation.
The stressed experiment teaching system of articulated slab beam bridge of the present utility model, comprise articulated slab beam bridge emulation body and the load resisting systems for emulating body load application to articulated slab beam bridge, also comprise the detection system of carrying out stressed detection when load applies, described detection system at least comprises for detecting the strain-Sensing device of beam bridge emulation body strain change and the deflection detector for detecting beam bridge emulation body sag.
Further, articulated slab beam bridge emulation body comprises beam bridge body and is arranged on described beam bridge body two ends and forms the bearing supported, and described beam bridge body is laterally hinged with by least T-shaped beam of two panels and forms.
Further, the strain acquirement instrument that strain-Sensing device comprises foil gauge and is connected with foil gauge, the T-shaped beam of every sheet is at least provided with the strain measuring point for installing described foil gauge at 1/2nd section lower edges.
Further, deflection detector comprises deflection detector and height adjustable and for forming the bracing frame supported to deflection detector, the T-shaped beam of every sheet is at least provided with the amount of deflection measuring point placed for deflection detector correspondence at 1/2nd section lower edges.
Further, the T-shaped beam of every sheet is also provided with described strain measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections.
Further, the T-shaped beam of every sheet is also provided with described amount of deflection measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections.
Further, load resisting systems comprises pedestal slide rail and the lever loading device for load application, the cross bar that described lever loading device comprises montant, be connected with montant upper end in the mode can rotated in perpendicular and for hang on cross bar provides load force add carrier, described montant is height adjustable structure and can moves to along pedestal slide rail along bridge, described cross bar is provided with longitudinally to move back and forth along cross bar and for emulating with beam bridge the loading head that body contacts.
Further, loading head comprises loading head body and is arranged on the force cell on loading head body, and described force cell is strain-type force sensor.
Further, articulated slab beam bridge emulation body is made up of pmma material.
The beneficial effects of the utility model: the stressed experiment teaching system of articulated slab beam bridge of the present utility model, can strengthen articulated slab beam bridge basic structural characteristics, and rib, plate, the perceptual knowledge of hinged structures and articulated slab beam bridge bearing Function and operation, can deepen under understanding load action, the mechanical characteristic of the power transmission process in articulated slab beam bridge structure component and this bridge type and internal force distribution situation, the lateral distribution coefficient under load action is calculated by this tutoring system, and experimentally Plotting data moment of flexure and deflection line, and then training student carries out the manipulative ability of structural test and the analysis ability of scientific research.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the utility model structural representation;
Fig. 2 is the beam bridge plate top view in the utility model;
Fig. 3 is the beam bridge plate side view in the utility model;
Fig. 4 is the lever loading device structural representation in the utility model;
Fig. 5 is foil gauge in the utility model and dial gauge installation site schematic diagram.
Embodiment
Fig. 1 is the utility model structural representation, Fig. 2 is the beam bridge plate top view in the utility model, Fig. 3 is the beam bridge plate side view in the utility model, Fig. 4 is the lever loading device structural representation in the utility model, Fig. 5 is foil gauge in the utility model and dial gauge installation site schematic diagram, as shown in the figure: the stressed experiment teaching system of articulated slab beam bridge of the present embodiment, comprise articulated slab beam bridge emulation body 1 and the load resisting systems 2 for emulating body 1 load application to articulated slab beam bridge, also comprise the detection system of carrying out stressed detection when load applies, described detection system at least comprises for detecting the strain-Sensing device of beam bridge emulation body strain change and the deflection detector for detecting beam bridge emulation body sag, articulated slab beam bridge emulation body 1 is arranged on basis 7, it refers to the emulation body structure designed after the articulated slab beam bridge structure commonly used according to reality carries out scale down, material can be different from actual beam bridge material, by the setting of articulated slab beam bridge emulation body 1, student is understood the concrete structure of articulated slab beam bridge intuitively, in addition, load resisting systems 2 is for carrying out load applying to articulated slab beam bridge emulation body 1, and the load applying position that adjustable is different.
In the present embodiment, articulated slab beam bridge emulation body 1 comprises beam bridge body 1-1 and is arranged on described beam bridge body 1-1 two ends and forms the bearing 1-2 supported, and described beam bridge body 1-1 is laterally hinged with by least T-shaped beam of two panels and forms; Wherein, beam bridge body 1-1 arranges five T-shaped beam a altogether, hingedly between five T-shaped beams to form, by above-mentioned deflection detector and strain-Sensing device, beam bridge emulation body entirety is strained and amount of deflection detection, also can strain the T-shaped beam of every a slice respectively and amount of deflection detection, in addition, bearing 1-2 arranges twice altogether, the calculating of beam bridge body 1-1 is 1600mm across footpath, and wide is 800mm.
In the present embodiment, the strain acquirement instrument 4 that strain-Sensing device comprises foil gauge 3 and is connected with foil gauge 3, the T-shaped beam of every sheet is at least provided with the strain measuring point for installing described foil gauge 3 at 1/2nd section lower edges; Wherein, strain acquirement instrument 4 is the collection of YE2539 high speed static strainmeter, and equipment is simple, can carry out multiple spot detection, directly obtain the amount of deflection numerical value of each measuring point, measures Stability Analysis of Structures reliable, certainly also can be the strainmeter collection of other models existing; In the present embodiment, the T-shaped beam of every sheet is also provided with described strain measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections; Namely foil gauge 3 is along bridge to the lower edge in 1/2nd, 1/4th and 1/8th cross sections being pasted on each beam, amounts to 15 strain measuring points, and each strain measuring point corresponding arranges a foil gauge 3.
In the present embodiment, deflection detector comprises deflection detector 5 and height adjustable and for forming the bracing frame 6 supported to deflection detector 5, the T-shaped beam of every sheet is at least provided with the amount of deflection measuring point placed for deflection detector 5 correspondence at 1/2nd section lower edges; In the present embodiment, the T-shaped beam of every sheet is also provided with described amount of deflection measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections; Wherein, deflection detector 5 is dial gauge, certainly also can be clock gauge or fleximeter, and dial gauge is arranged in 1/2nd, 1/4th at the bottom of the rib of the T-shaped beam of every sheet and eighth section, amount to 15 amount of deflection measuring points, each amount of deflection measuring point corresponding arranges a dial gauge and bracing frame 6.
In the present embodiment, load resisting systems 2 comprises pedestal slide rail 2-1 and the lever loading device for load application, the cross bar 2-3 that described lever loading device comprises montant 2-2, be connected with montant 2-2 upper end in the mode can rotated in perpendicular and for hang on cross bar 2-3 provides load force add carrier 2-4, described montant 2-2 is height adjustable structure and can moves to along pedestal slide rail 2-1 along bridge, described cross bar 2-3 is provided with longitudinally to move back and forth along cross bar 2-3 and for emulating with beam bridge the loading head 2-5 that body contacts; Pedestal is arranged on multiarch bridge emulation body side, montant can move along pedestal, to change different loading positions, the move mode of montant drives by manpower and realizes, and as by arranging positioning sliding block 2-7, also realizes by automated manner, as tied by screw slider, and drive realization by motor, be prior art, do not repeat them here; In addition, the cross bar of lever loading device, across the setting of multiarch bridge emulation body, when montant moves to appointment loading position, will add carrier and be affiliated to crossbar end realization loading, and wherein, add carrier and place counterweight realization by a hanger.
In the present embodiment, loading head 2-5 comprises loading head 2-5 body and is arranged on the force cell 2-6 on loading head 2-5 body, and described force cell 2-6 is strain-type force sensor 2-6.
In the present embodiment, articulated slab beam bridge emulation body 1 is made up of pmma material.
Implement to load by lever loading device, amount to six loading conditions (according to specific experiment needs, also can be more), the first operating mode is for acting on 1/2nd places along the overall laterally uniform line load of beam bridge emulation body, the second operating mode is that single Concentrated load is in No. five T-shaped beam 1/2nd places, the third operating mode is that single Concentrated load is in No. four T-shaped beam 1/2nd places, 4th kind of operating mode is that single Concentrated load is in No. three T-shaped beam 1/2nd places, 5th kind of operating mode is that single Concentrated load is in No. three T-shaped beam 1/4th places, 6th kind of operating mode is that single Concentrated load is in No. three T-shaped beam 1/8th places, wherein, under the first operating mode, self-poise selected by strainmeter, after scanning sample, strainmeter gathers the initial value of 1/2nd cross section strains automatically, the initial value of manual record amount of deflection, then uniform test wire load is increased again at 1/2nd places, the response of each measuring point is gathered with strainmeter, the measured value of manual record amount of deflection, wherein the load of all operating modes all refers to be applied to structural power or make a concerted effort, the loading method of all the other five kinds of operating modes loads with the first operating mode, when carrying out load applying in each position, by strain-Sensing device and deflection detector, the strain variation of emulation body and amount of deflection change are detected, corresponding to each loading condition, according to the moment of flexure of each section of actual measurement strain calculation, again according to the load lateral distribution coefficient of each section of calculation of Bending Moment, and calculate the load lateral distribution coefficient of each section according to actual measurement amount of deflection.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. the stressed experiment teaching system of articulated slab beam bridge, it is characterized in that: comprise articulated slab beam bridge emulation body and the load resisting systems for emulating body load application to articulated slab beam bridge, also comprise the detection system of carrying out stressed detection when load applies, described detection system at least comprises for detecting the strain-Sensing device of beam bridge emulation body strain change and the deflection detector for detecting beam bridge emulation body sag.
2. the stressed experiment teaching system of articulated slab beam bridge according to claim 1, it is characterized in that: described articulated slab beam bridge emulation body comprises beam bridge body and is arranged on described beam bridge body two ends and forms the bearing supported, described beam bridge body is laterally hinged with by least T-shaped beam of two panels and forms.
3. the stressed experiment teaching system of articulated slab beam bridge according to claim 2, it is characterized in that: the strain acquirement instrument that described strain-Sensing device comprises foil gauge and is connected with foil gauge, the T-shaped beam of every sheet is at least provided with the strain measuring point for installing described foil gauge at 1/2nd section lower edges.
4. the stressed experiment teaching system of articulated slab beam bridge according to claim 3, it is characterized in that: described deflection detector comprises deflection detector and height adjustable and for forming the bracing frame supported to deflection detector, the T-shaped beam of every sheet is at least provided with the amount of deflection measuring point placed for deflection detector correspondence at 1/2nd section lower edges.
5. the stressed experiment teaching system of articulated slab beam bridge according to claim 4, is characterized in that: every T-shaped beam of sheet is also provided with described strain measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections.
6. the stressed experiment teaching system of articulated slab beam bridge according to claim 5, is characterized in that: every T-shaped beam of sheet is also provided with described amount of deflection measuring point along bridge to the lower edge in 1/4th and 1/8th cross sections.
7. the stressed experiment teaching system of articulated slab beam bridge according to the arbitrary claim of claim 1-6, it is characterized in that: described load resisting systems comprises pedestal slide rail and the lever loading device for load application, described lever loading device comprises montant, the cross bar be connected with montant upper end in the mode can rotated in perpendicular and for hang on cross bar provides load force add carrier, described montant is height adjustable structure and can moves to along pedestal slide rail along bridge, described cross bar is provided with and longitudinally can moves back and forth along cross bar and for emulating with beam bridge the loading head that body contacts.
8. the stressed experiment teaching system of articulated slab beam bridge according to claim 7, is characterized in that: described loading head comprises loading head body and is arranged on the force cell on loading head body, and described force cell is strain-type force sensor.
9. the stressed experiment teaching system of articulated slab beam bridge according to claim 8, is characterized in that: articulated slab beam bridge emulation body is made up of pmma material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494689.8U CN204791772U (en) | 2015-07-09 | 2015-07-09 | Articulated slab beam bridge atress experiment teaching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494689.8U CN204791772U (en) | 2015-07-09 | 2015-07-09 | Articulated slab beam bridge atress experiment teaching system |
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| CN204791772U true CN204791772U (en) | 2015-11-18 |
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| CN201520494689.8U Expired - Fee Related CN204791772U (en) | 2015-07-09 | 2015-07-09 | Articulated slab beam bridge atress experiment teaching system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952556A (en) * | 2017-04-17 | 2017-07-14 | 华南理工大学 | A kind of composite roof truss intelligence test experimental provision |
| CN107059606A (en) * | 2017-06-14 | 2017-08-18 | 中国铁路设计集团有限公司 | A kind of bridge health monitoring bearing and its monitoring method |
| CN109813194A (en) * | 2019-01-24 | 2019-05-28 | 苏州雅泛迪铝业有限公司 | Steel plate deflection detecting jig |
-
2015
- 2015-07-09 CN CN201520494689.8U patent/CN204791772U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952556A (en) * | 2017-04-17 | 2017-07-14 | 华南理工大学 | A kind of composite roof truss intelligence test experimental provision |
| CN107059606A (en) * | 2017-06-14 | 2017-08-18 | 中国铁路设计集团有限公司 | A kind of bridge health monitoring bearing and its monitoring method |
| CN109813194A (en) * | 2019-01-24 | 2019-05-28 | 苏州雅泛迪铝业有限公司 | Steel plate deflection detecting jig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20170709 |