CN102121815B - Differential settlement producing device and method for thin-walled cylindrical shell structure test - Google Patents
Differential settlement producing device and method for thin-walled cylindrical shell structure test Download PDFInfo
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- CN102121815B CN102121815B CN201010598695XA CN201010598695A CN102121815B CN 102121815 B CN102121815 B CN 102121815B CN 201010598695X A CN201010598695X A CN 201010598695XA CN 201010598695 A CN201010598695 A CN 201010598695A CN 102121815 B CN102121815 B CN 102121815B
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- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims description 18
- 238000012546 transfer Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
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Abstract
The invention discloses a differential settlement producing device for a thin-walled cylindrical shell structure test. The differential settlement producing device for the thin-walled cylindrical shell structure test can flexibly simulate various harmonic settlements and local settlements and practically transmit differential settlements to a thin-walled cylindrical shell model by adjusting positive and negative screw thread sleeves, thereby obtaining real shell deformation to intuitively understand the instability mode and failure mechanism of a thin-walled cylindrical shell under the differential settlements, provide bases for the economical and rational designing of structures such as vertical steel storage tanks, smooth bottom steel silos and the like, and provide reference for the drawing-up of related designing specifications. The differential settlement producing device has a simple structure and low cost, can suppose that the manufactured thin-walled cylindrical shell is free from initial stress but only has insignificant geometrical initial shortcomings, and is applied to tests and researches on the thin-walled cylindrical shells.
Description
Technical field
The invention belongs to technical field of structural engineering, relate in particular to the non-uniform settling generation device in a kind of Thin-Wall Cylindrical Shells structural test, and use the method that this device produces non-uniform settling.
Background technology
Thin-Wall Cylindrical Shells is widely used in all kinds of shell structures in the civil engineering work, like storage tank, silo, tower mast, chimney and pipeline etc.The large cylindrical shell that is built on the soft soil foundation is easy to generate various distortion, and all non-uniform settlings of its mesochite are the most unfavorable to shell stability.The flexing of Thin-Wall Cylindrical Shells is the current hot research fields of shell structure in the world under the unequal stress state, but mostly to non-homogeneous loading condition, less to the research of non-homogeneous support problem.At present, the research for Thin-Wall Cylindrical Shells under the non-uniform settling mainly still concentrates on theoretical analysis and numerical simulation.But numerical method is difficult to accurately to consider the thin wall cylindrical buckling of shell is had some factors of material impact, like the rigidity of initial defective, unrelieved stress, storage medium and material strain sclerosis etc.The influence of these complicated factors can only be investigated with the theoretical method that combines through experimental study or test, still, the report of the non-uniform settling generation device that carries out the Thin-Wall Cylindrical Shells structural test is not arranged as yet at present.
Summary of the invention
The objective of the invention is deficiency, non-uniform settling generation device and method in a kind of Thin-Wall Cylindrical Shells structural test are provided to prior art.
The objective of the invention is to realize: the non-uniform settling generation device in a kind of Thin-Wall Cylindrical Shells structural test through following technical scheme; It comprises: circular bottom plate, rigid platfor and several (such as 32) sedimentation transfer devices, and the sedimentation transfer device evenly is fixed between circular bottom plate and the rigid platfor along circumference; Wherein, said sedimentation transfer device comprises rectangular parallelepiped steel bar piece, last screw rod, positive left-hand thread adjustable sleeve, following screw rod, Magnetic gauge stand and dial gauge.Rectangular parallelepiped steel bar piece point is welded in the lower surface of circular bottom plate; Last screw rod and following screw rod screw in the two ends of positive left-hand thread adjustable sleeve respectively; The other end of last screw rod is fixed on the rectangular parallelepiped steel bar piece through nut; The other end of following screw rod is through being bolted on the rigid platfor, and Magnetic gauge stand is fixed on the rigid platfor, and Magnetic gauge stand supports dial gauge through bracing frame.
Said apparatus produces the method for non-uniform settling, and it may further comprise the steps:
(1) the thin wall cylindrical shell model with test is bonded on the circular bottom plate through glass cement;
(2) adjustable support frame makes all dial gauges aim at the circumference bottom of thin wall cylindrical shell model;
(3) regulate positive left-hand thread adjustable sleeve, produce sedimentation deformation, this displacement can pass to circular bottom plate through rectangular parallelepiped steel bar piece, passes to the thin wall cylindrical shell model at last;
(4) dial gauge is measured the size of thin wall cylindrical shell model periphery sedimentation deformation.
The beneficial effect that the present invention has is: through the non-uniform settling generation device in this Thin-Wall Cylindrical Shells structural test; Regulate positive and negative screw shell and can simulate various harmonic wave sedimentations and local sedimentation flexibly; Can actual non-uniform settling be passed to the thin wall cylindrical shell model; Thereby obtain real housing distortion; Can intuitively understand unstability mode and the failure mechanism of Thin-Wall Cylindrical Shells under non-uniform settling,, and reference is provided for the formulation of relevant design standard for the isostructural economical rationality design of Vertical Steel storage tank, flat steel silo provides foundation.The present invention is simple in structure, and cost is low, and can suppose that the Thin-Wall Cylindrical Shells of making does not have primary stress, has only how much very little initial imperfections, is applicable to the experimental study of Thin-Wall Cylindrical Shells.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention;
Fig. 2 is the fragmentary detail view of Fig. 1;
Fig. 3 is the planimetric map of Fig. 1;
Among the figure: 1, circular bottom plate, 2, the thin wall cylindrical shell model, 3, rectangular parallelepiped steel bar piece, 4, nut, 5, go up screw rod, 6, positive left-hand thread adjustable sleeve, 7, screw rod down, 8, bolt, 9, rigid platfor, 10, Magnetic gauge stand, 11, dial gauge.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, the non-uniform settling generation device in the Thin-Wall Cylindrical Shells structural test of the present invention comprises: circular bottom plate 1, rigid platfor 9 and several sedimentation transfer devices, the sedimentation transfer device evenly is fixed between circular bottom plate 1 and the rigid platfor 9 along circumference.The sedimentation transfer device comprises rectangular parallelepiped steel bar piece 3, last screw rod 5, positive left-hand thread adjustable sleeve 6, following screw rod 7, Magnetic gauge stand 10, dial gauge 11.3 lower surfaces that are welded in circular bottom plate 1 of rectangular parallelepiped steel bar piece; One end of last screw rod 5 and following screw rod 7 screws in positive left-hand thread adjustable sleeve 6 respectively; The other end of last screw rod 5 is fixed on the rectangular parallelepiped steel bar piece 3 through nut; The other end of following screw rod 7 is fixed on the rigid platfor 9 through bolt 8, and Magnetic gauge stand 10 is fixed on the rigid platfor 9, and Magnetic gauge stand 10 supports dial gauge 11 through bracing frame.
Use the method that said apparatus produces non-uniform settling, may further comprise the steps:
1, thin wall cylindrical shell model 2 is bonded on the circular bottom plate 1 through glass cement.
2, adjustable support frame makes all dial gauges 11 aim at the circumference bottom of thin wall cylindrical shell model 2.
3, regulate positive left-hand thread adjustable sleeve 6, produce sedimentation deformation, this displacement can pass to circular bottom plate 1 through rectangular parallelepiped steel bar piece 3, passes to thin wall cylindrical shell model 2 at last.
4, dial gauge 11 is measured the size of thin wall cylindrical shell model 2 peripheral sedimentation deformations.
Circular bottom plate adopts thinner thickness (like 2mm) but intensity is high, ductility is good steel plate, assurance circular bottom plate easy deformation and cracky not; Rigid platfor need have enough rigidity (can adopt the thick steel plate of 25mm).
Because rigid platfor 9 rigidity are very big; Can produce any distortion hardly; Guaranteed the feasibility that non-uniform settling transmits, guaranteed that also dial gauge 11 records the accuracy of displacement, so dial gauge 11 resulting displacement datas are exactly the size of thin wall cylindrical shell model periphery sedimentation deformation.
Claims (2)
1. the non-uniform settling generation device in the Thin-Wall Cylindrical Shells structural test is characterized in that it comprises: circular bottom plate (1), rigid platfor (9) and several sedimentation transfer devices; The sedimentation transfer device evenly is fixed between circular bottom plate (1) and the rigid platfor (9) along circumference; Wherein, said sedimentation transfer device comprises rectangular parallelepiped steel bar piece (3), last screw rod (5), positive left-hand thread adjustable sleeve (6), following screw rod (7), Magnetic gauge stand (10) and dial gauge (11); Rectangular parallelepiped steel bar piece (3) point is welded in the lower surface of circular bottom plate (1); Last screw rod (5) and following screw rod (7) screw in the two ends of positive left-hand thread adjustable sleeve (6) respectively; The other end of last screw rod (5) is fixed on the rectangular parallelepiped steel bar piece (3) through nut; The other end of following screw rod (7) is fixed on the rigid platfor (9) through bolt (8), and Magnetic gauge stand (10) is fixed on the rigid platfor (9), and Magnetic gauge stand (10) supports dial gauge (11) through bracing frame.
2. an application rights requires 1 said device to produce the method for non-uniform settling, it is characterized in that it may further comprise the steps:
21, the thin wall cylindrical shell model (2) of test is bonded at the upper surface of circular bottom plate (1) through glass cement;
22, adjustable support frame makes all dial gauges (11) aim at the circumference bottom of thin wall cylindrical shell model (2);
23, regulate positive left-hand thread adjustable sleeve (6), produce sedimentation deformation, this displacement can pass to circular bottom plate (1) through rectangular parallelepiped steel bar piece (3), passes to thin wall cylindrical shell model (2) at last;
24, dial gauge (11) is measured the size of the peripheral sedimentation deformation of thin wall cylindrical shell model (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010598695XA CN102121815B (en) | 2010-12-21 | 2010-12-21 | Differential settlement producing device and method for thin-walled cylindrical shell structure test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010598695XA CN102121815B (en) | 2010-12-21 | 2010-12-21 | Differential settlement producing device and method for thin-walled cylindrical shell structure test |
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| Publication Number | Publication Date |
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| CN102121815A CN102121815A (en) | 2011-07-13 |
| CN102121815B true CN102121815B (en) | 2012-07-04 |
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| CN201010598695XA Expired - Fee Related CN102121815B (en) | 2010-12-21 | 2010-12-21 | Differential settlement producing device and method for thin-walled cylindrical shell structure test |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445381B (en) * | 2011-09-26 | 2013-10-16 | 西南交通大学 | Model deflection sedimentation control device for geotechnical centrifuge test |
| CN107702686A (en) * | 2017-08-11 | 2018-02-16 | 中国石油天然气集团公司 | Experimental system for the analysis of settlement of foundation tank structure |
| CN107702681B (en) * | 2017-09-01 | 2019-12-10 | 中国石油天然气集团公司 | Test device and method for simulating foundation settlement of large storage tank |
| CN108387204A (en) * | 2018-02-02 | 2018-08-10 | 中国石油天然气集团有限公司 | Tank body strain analog machine and method under settlement of foundation |
| CN109099884B (en) * | 2018-06-20 | 2021-03-30 | 中国石油天然气集团有限公司 | Storage tank bottom plate settlement simulation and automatic monitoring experiment platform |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029815A (en) * | 2007-01-17 | 2007-09-05 | 黑龙江科技学院 | Solid stressed micro-deformation measuring device |
| CN201945289U (en) * | 2010-12-21 | 2011-08-24 | 浙江大学 | Device for producing differential settlements during thin-walled cylindrical shell structure test |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002131176A (en) * | 2000-10-24 | 2002-05-09 | Tadashi Shigemi | Impact buckling test apparatus |
| WO2008115323A1 (en) * | 2007-03-20 | 2008-09-25 | Exxonmobil Upstream Research Company | A framework to determine the capacity of a structure |
| US8042242B2 (en) * | 2009-03-13 | 2011-10-25 | Rexford Allison Maugans | Mechanical device for spreading flanges apart |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029815A (en) * | 2007-01-17 | 2007-09-05 | 黑龙江科技学院 | Solid stressed micro-deformation measuring device |
| CN201945289U (en) * | 2010-12-21 | 2011-08-24 | 浙江大学 | Device for producing differential settlements during thin-walled cylindrical shell structure test |
Non-Patent Citations (1)
| Title |
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| JP特开2002-131176A 2002.05.09 |
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| CN102121815A (en) | 2011-07-13 |
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