CN203811399U - Two-layer single-span reinforced concrete framework test model - Google Patents
Two-layer single-span reinforced concrete framework test model Download PDFInfo
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- CN203811399U CN203811399U CN201420122102.6U CN201420122102U CN203811399U CN 203811399 U CN203811399 U CN 203811399U CN 201420122102 U CN201420122102 U CN 201420122102U CN 203811399 U CN203811399 U CN 203811399U
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Abstract
The utility model discloses a two-layer single-span reinforced concrete framework test model. The two-layer single-span reinforced concrete framework test model comprises a framework, a steel bar strain gauge and a vertical strain gauge, the steel bar strain gauge is arranged at a beam end section and crosses the middle section, and the vertical strain gauge is arranged at a steel pipe of the framework. The two-layer single-span reinforced concrete framework test model is applicable to a high-support system under the effect of heavy load, the carrying capacity is high, the value of calculating length coefficient is more reasonable, the influence of high-support height changes on the carrying capacity is fully considered, the influence of the erecting height of the high-support system on the stable carrying capacity is very large and cannot be ignored, and the influence of joint eccentricity is also considered. Besides, the two-layer single-span reinforced concrete framework test model is advantaged by simple structure, convenient operation, and good data application value.
Description
Technical field
The utility model belongs to concrete technology field, relates in particular to a kind of two-layer single span reinforced concrete frame test model.
Background technology
The computation schema that domestic contrast is many is at present that the stability Calculation whole support of using for reference the employing of < < building operation fastener type steel pipe scaffold technical specification of security > > internal scaffolding is reduced to the stable of single vertical rod, on this basis, be aided with certain safety coefficient probabilitic limit state design method, Japan, the computing method that Britain adopts are same probabilitic limit state design method all, they all on classical Euler stable theory basis the computational length value of column make certain limitation, and all can only carry out the calculating to single vertical rod, can not carry out structure analysis to support integral body, by adopting corresponding safety coefficient K to guarantee the reliability of stability bearing capacity, in < < building operation fastener type steel pipe scaffold technical specification of security > > about bracing frame vertical rod stability Calculation problem, for ease of application, first use and replace monolithic stability to calculate to the stable calculating of vertical rod, then the vertical load wobbler action that acts on bracing frame is ignored, last vertical rod computational length is determined by additional coefficient K.
Utility model content
The purpose of this utility model is to provide a kind of two-layer single span reinforced concrete frame test model, be intended to solve the computational length coefficient value that existing concrete technology exists unreasonable, do not consider that high bearing height changes the impact of bearing capacity, ignores the problem of the impact of node bias.
The utility model is achieved in that a kind of two-layer single span reinforced concrete frame test model, and described two-layer single span reinforced concrete frame test model comprises: framework, reinforcing bar foil gauge, longitudinal strain sheet;
Described reinforcing bar foil gauge is arranged on beam-ends cross section, the spaning middle section of described framework, and described longitudinal strain sheet is arranged on the steel pipe of described framework.
What further, described reinforcing bar foil gauge was also arranged on framework closes on capital, post basal cross section place.
Further, described longitudinal strain sheet is arranged on the length direction 1/2 section layout of the steel pipe support of framework.
Two-layer single span reinforced concrete frame test model of the present utility model, be applicable to the high support system under heavy load effect, bearing capacity is high, make computational length coefficient value more reasonable, take into full account high bearing height and changed the impact on bearing capacity, the scaffolding height of high support system is very large on its stability bearing capacity impact, can not be ignored.Also consider the impact of node bias simultaneously.In addition, the utility model is simple in structure, easy to operate, has good market demand to be worth.
Accompanying drawing explanation
Fig. 1 is the two-layer single span reinforced concrete frame test model that the utility model embodiment provides.
In figure: 1, framework; 2, reinforcing bar foil gauge; 3, longitudinal strain sheet.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the two-layer single span reinforced concrete frame test model that the utility model provides.For convenience of explanation, only show the part relevant to the utility model.
Two-layer single span reinforced concrete frame test model of the present utility model, this two-layer single span reinforced concrete frame test model comprises: framework, reinforcing bar foil gauge, longitudinal strain sheet;
Reinforcing bar foil gauge is arranged on beam-ends cross section, the spaning middle section of framework, and longitudinal strain sheet is arranged on the steel pipe of framework.
As a prioritization scheme of the utility model embodiment, what reinforcing bar foil gauge was also arranged on framework closes on capital, post basal cross section place.
As a prioritization scheme of the utility model embodiment, longitudinal strain sheet is arranged on length direction 1/2 section of the steel pipe support of framework and arranges.
Below in conjunction with drawings and the specific embodiments, application principle of the present utility model is further described.
As shown in Figure 1, the two-layer single span reinforced concrete frame test model of the utility model embodiment is mainly comprised of framework 1, reinforcing bar foil gauge 2, longitudinal strain sheet 3; The utility model is based on testing laboratory's site condition restriction, the form bracing system frame model that selection is 1:2 to the xoncrete structure reduced scale of conventional girder span 6m, floor height 3m, mechanical characteristic according to concrete frame 1 model, in test model Vierendeel girder, reinforcing bar foil gauge 2 is affixed on to beam-ends cross section, spaning middle section place; In test model frame column, reinforcing bar foil gauge 2 is affixed on and closes on capital, post basal cross section place; Length direction 1/2 section at each root steel pipe support is furnished with 3 longitudinal strain sheets 3, be mutually 120 °, for checking the reading of reinforcing bar foil gauge, in beam-ends cross section, spaning middle section place respectively arranges 1 reinforcing rib meter, for reducing the impact of external environment on strain measurement, be provided with reinforcing bar, steel pipe and concrete compensating plate in addition.Should carry out the measurement of the Mechanics Performance Testing of reinforcing bar and steel pipe support and strain, amount of deflection simultaneously.
Principle of work of the present utility model is:
The utility model is by vertical rod, the huge high carriage that forms to horizon bar and multiple tracks bridging in length and breadth, and wherein the stability of single vertical rod and around rod member and whole system exist following 3 rules qualitatively:
1. single pole effect of contraction and distance dependent, larger to single pole effect of contraction at a distance of nearer rod member with calculating single pole, otherwise less.
2. the line rigidity l/EI of internal force character and rod member has determined the size of rod member effect of contraction around.From internal force properties, analyze, when internal force character is identical, line rigidity is directly proportional to effect of contraction, and the larger effect of contraction of line rigidity is larger, otherwise little, and when rod member bears pressure, bending stiffness reduces; During bearing tension, bending stiffness increases.
3. when bracing frame is stressed, calculates vertical rod and will deform and displacement, just there is effect of contraction to the vertical rod of unstability in rod member around, and this power will pass to adjacent rod member by horizon bar with distortion.
From above-mentioned law of regularity, analyzing a certain vertical rod is separately unsafe in the stability of single step pitch, simultaneously, the lateral support effect of ignoring horizon bar and bridging is also irrational, but, accurately show that adjacent rod member is also difficult to accomplish to calculating the effect of contraction size of depression bar around, this just need to find a kind of mechanical model of simplification, the stability bearing capacity of calculating vertical rod can be simply reflected, interactional impact between rod member can be considered again.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a two-layer single span reinforced concrete frame test model, is characterized in that, described two-layer single span reinforced concrete frame test model comprises: framework, reinforcing bar foil gauge, longitudinal strain sheet;
Described reinforcing bar foil gauge is arranged on beam-ends cross section, the spaning middle section of described framework, and described longitudinal strain sheet is arranged on the steel pipe of described framework.
2. two-layer single span reinforced concrete frame test model as claimed in claim 1, is characterized in that, what described reinforcing bar foil gauge was also arranged on framework closes on capital, post basal cross section place.
3. two-layer single span reinforced concrete frame test model as claimed in claim 1, is characterized in that, described longitudinal strain sheet is arranged on length direction 1/2 section of the steel pipe support of framework and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122102.6U CN203811399U (en) | 2014-03-18 | 2014-03-18 | Two-layer single-span reinforced concrete framework test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122102.6U CN203811399U (en) | 2014-03-18 | 2014-03-18 | Two-layer single-span reinforced concrete framework test model |
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| CN203811399U true CN203811399U (en) | 2014-09-03 |
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| CN201420122102.6U Expired - Fee Related CN203811399U (en) | 2014-03-18 | 2014-03-18 | Two-layer single-span reinforced concrete framework test model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305161A (en) * | 2016-04-21 | 2017-10-31 | 崔文 | A kind of beam-post Mixed Architecture test model |
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2014
- 2014-03-18 CN CN201420122102.6U patent/CN203811399U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305161A (en) * | 2016-04-21 | 2017-10-31 | 崔文 | A kind of beam-post Mixed Architecture test model |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |