CN203795884U - Safe and reliable construction system for replacing columns by holding beams - Google Patents
Safe and reliable construction system for replacing columns by holding beams Download PDFInfo
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- CN203795884U CN203795884U CN201420031414.6U CN201420031414U CN203795884U CN 203795884 U CN203795884 U CN 203795884U CN 201420031414 U CN201420031414 U CN 201420031414U CN 203795884 U CN203795884 U CN 203795884U
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Abstract
The utility model discloses a safe and reliable construction system for replacing columns by holding beams which comprises a plurality of supporting structures for replacing columns by holding beams, a computer, a static strain testing instrument and a plurality of strain gages. The supporting structures for replacing columns by holding beams comprise supports, bases, jacks and dial indicators. The bases are arranged on the ground, the jacks are arranged on the bases, and the supports for supporting beams are arranged on the jacks. The dial indicators used for measuring the supporting and jacking quantity are arranged on the bases. The strain gages are arranged on the outer walls of the supports, each strain gage is connected with the static strain testing instrument through a corresponding signal line, and the static strain testing instrument is connected with the computer. According to the system, column loads are completely borne by the supporting structure in the construction of replacing columns by holding beams, and deformation of the beams is precisely controlled. Meanwhile, in the column load unloading process, the stress of the supporting structure can be monitored in real time, and the supporting structure can be in a safe state all the time. In the construction process, the system is clear in stress, deformation of the beams is controllable, and the construction process is safe and reliable.
Description
[technical field]
The utility model belongs to Structures Reinforced Technique field in civil engineering, particularly a kind of safe and reliable joist post construction system.
[background technology]
In Practical Project, joist post reinforcing method is generally used for the consolidation process that post concrete strength concrete on the low side and local has major defect.Along with the development of Reinforcement Technology of Concrete Structure, joist post reinforcing method is applied in Practical Project more and more.In recent years, Chinese scholars is studied and puts into practice joist post reinforcing method.Conventionally construction method is, the load that first utilizes bracing or strutting arrangement coupled columns to bear unloads, and next replaces defect part concrete, and last part concrete to be replaced unloads while arriving code requirement intensity, and whole work progress completes.But in post load uninstall process, the displacement of structure, sedimentation, stress etc. will be difficult to accurately control, and while particularly needing post to disconnect completely, the distortion stressed, beam of braced structures can not accurately be tested and be controlled.
[utility model content]
The purpose of this utility model is to provide a kind of safe and reliable joist post construction system, to solve problems of the prior art.
To achieve these goals, the technical scheme that the utility model adopts is:
A safe and reliable joist post construction system, comprises some joist post braced structuress, computer, static strain testing instrument and some foil gauges; Joist post braced structures comprises support, base, jack and dial gage; On the ground, jack is arranged on base in base setting, and jack is provided with the support for brace summer; Base is provided with the dial gage that supports jacking amount for measuring; The outer wall supporting is provided with some foil gauges, and each foil gauge connects static strain testing instrument by corresponding holding wire, and static strain testing instrument connects computer.
The utility model further improves and is: described beam is right-angled intersection beam, and infall is provided with post; The quantity of described joist post braced structures is four, is supported on respectively the beam bottom of post surrounding.
The utility model further improves and is: soffit is erected with the scaffold as temporary supporting.
The utility model further improves and is: the some foil gauges on the outer wall of support are divided into some layers arranges, and interlamellar spacing is 1～1.5m.
The utility model further improves and is: on the outer wall of support, every layer is evenly provided with four foil gauges.
The utility model further improves and is: two dial gages of symmetrical installation on each base.
With respect to prior art, the beneficial effects of the utility model are,
1, the utility model is incorporated into strain testing and displacement measurement in work progress simultaneously, can accurately measure in real time the force and deformation of braced structures, has effectively prevented support system unstability.
2, the utility model can complete on ground the observation of displacement, has avoided work high above the ground in the past, guarantees field observation personnel's safety.
3, the utility model can accurately be measured and be controlled the displacement of beam, has effectively prevented joist post work progress central sill because being out of shape the excessive cracking that causes.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of a kind of safe and reliable joist post construction system of the utility model;
Fig. 2 is that the A-A of Fig. 1 is to view;
Fig. 3 is that the B-B of Fig. 1 is to view;
Fig. 4 is the steel pipe strain curve figure recording in embodiment 1 work progress.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Refer to shown in Fig. 1, a kind of safe and reliable joist post construction system of the utility model, comprises four joist post braced structuress, computer 9, static strain testing instrument 10 and some foil gauges 11.
Joist post braced structures comprises support 4, base 6, jack 7 and dial gage 8; Base 6 arranges on the ground, and jack 7 is arranged on base 6, and jack 7 is provided with and supports 4; Support 4 and be provided with some foil gauges 11, each foil gauge 11 connects static strain testing instrument 10 by corresponding holding wire 12, and static strain testing instrument 10 connects computer 9.
When a kind of safe and reliable joist post construction system of application the utility model is constructed, specifically comprise the following steps:
Step 1, by the support structure apparatus shown in Fig. 1; First in beam 2 bottom surfaces, set up scaffold 5 and be used as temporary supporting, then joist changes post braced structures, will guarantee to support 4 and beam 2 bottom surface close contacts during installation.
Step 2, by pasting foil gauge 11 shown in Fig. 1, different according to the height that supports 4, can be divided into several cross sections, every segment length is advisable with 1～1.5m.During stickup, first that support 4 surface finish are smooth and clean up with alcohol, then 502 gluing being affixed on for foil gauge 11 and copper-clad plate are supported to 4(steel pipes) upper, with epoxy resin and gauze, foil gauge 11 is protected; Each foil gauge 11 connects static strain testing instrument 10 by corresponding holding wire 12, and static strain testing instrument 10 connects computer 9.
Step 3, installs displacement tester by shown in Fig. 1.2 dial gages 8 of symmetrical installation on each base 6, and the good all test macros of debugging.
Step 4, the load of bearing according to pillar 3 carries out hierarchical loading, and loading procedure will be steadily, synchronously carry out.Often add one-level load, observation static strain testing instrument 10 and dial gage 8 numerical value can add next stage and load after stable reading, until load, all complete.
Step 5, adopts construction tool, cuts the concrete of pillar 3 rejected regions, the variation of close observation braced structures strain and the distortion of beam in cutting concrete process.Through to after rejected region cleaning, perfusion grouting material, reaching after requirement of strength is dismountable support, whole reinforcing has accused.
Lift a specific embodiment below, to help better to understand the utility model.
Embodiment 1
Certain community houses selling office is three layers on the ground, B1 (local two-layer), reinforced concrete frame structure, the high 5.7m of post 3, column section 600mm * 600mm, beam raft foundation.Due to careless manipulation in construction, cause the damage in various degree of two frame columns of basement, through Site Detection, need replace reinforcement to pillar rejected region concrete and process.
For guaranteeing safety, before joist post, construction party is set up full hall scaffold 5 as temporary supporting around at post 3, and scaffold 5 vertical rod level intervals are 1.2m, and step frame height is 1.5m.Joist post work progress is below described in detail in detail:
In post 3 surrounding beam 2 bottom surfaces, arrange and underpin supporting steel pipe, it is 159mm that this engineering is selected diameter, wall thickness 10mm, the steel pipe of long 4m is as supporting 4.Between support 4 and base 6, place jack 7, base 6 must be positioned on solid foundation soil, does not allow to produce distortion after load-bearing.Support installs, and application self leveling laser level is proofreaied and correct and supported 4 verticality, supports 4 loads that all apply 5MPa to four simultaneously, make to support 4 with beam 2 bottom surface close contacts.
Paste foil gauge.As shown in Figure 1, supporting 4 San Ge cross sections, upper, middle and lower symmetrical stickup specification, be 3mm * 2mm, resistance is the resistance strain gage 11 of 120 Ω.During stickup, first with angle grinding machine, stickup position steel tube surface is polished smooth, and clean up with alcohol, after alcohol volatilizees completely, foil gauge 11, copper-clad plate are cemented fast with 502 glue, then with epoxy resin and gauze, protected.
By shown in Fig. 1, displacement tester is installed.2 dial gages 8 of symmetrical installation on each base 6, and the good all test macros of debugging.
The load of bearing according to post 3 carries out hierarchical loading.Post 3 load of bearing is 1107.4kN as calculated, and it is 277kN that load is born in every 4 of support, and loading divides 10 grades to be carried out, every grade of 27.7kN.It is steady, synchronous that loading procedure is wanted.
After every grade of loading, observation static strain testing instrument 10 and dial gage 8 numerical value change can add next stage and load after stable reading, until be loaded on 277kN, loading work all completes.
Adopt special use to cut instrument, cut the concrete of post 3 rejected regions.And to after rejected region cleaning, perfusion grouting material.This grouting material adopts C60 early strength micro expansion concrete, and maintenance is after 3～5 days, i.e. dismountable support 4, and whole stabilization works has accused.
Consolidation effect:
In the construction of this joist post, at 277kN, stopping under load, record and support 4(steel pipe) strain mean is 524 μ m.According to formula: △ L=L * ε calculates:
The decrement of supporting steel pipe is: 4000mm * 0.000524=2.096mm
The jacking amount that is recorded steel pipe by dial gage 8 is 4.64mm,
Being deformed into of beam: 4.64-2.096=2.544mm
The steel pipe strain curve recording in work progress is as shown in Figure 4: curve flat segments is the situation of change after pillar disconnects, and illustrate that post load born by braced structures completely, and stress is ideal comparatively.
The present embodiment proves, the utility model utilizes static strain testing system and displacement test system combined monitoring, can Real-time Collection to parameters such as the displacement of structure in work progress, stress, and controlled, thereby greatly improved the security reliability of joist post.The utility model system is simple, easy for installation, and datamation degree is high, for the construction of joist post provides a kind of safe and reliable construction equipment and method.
A kind of safe and reliable joist post construction system of the utility model, in order in joist post construction, guarantees that post load born by braced structures completely, the distortion of Accurate Control Beam; Meanwhile, in post load uninstall process, braced structures is stressed can be monitored in real time, guarantees that braced structures is in a safe condition all the time.The utility model is in work progress, and structure stress is clear and definite, and the distortion of beam is controlled, and work progress is safe and reliable.
Claims (6)
1. a safe and reliable joist post construction system, is characterized in that, comprises some joist post braced structuress, computer (9), static strain testing instrument (10) and some foil gauges (11); Joist post braced structures comprises support (4), base (6), jack (7) and dial gage (8); Base (6) arranges on the ground, and it is upper that jack (7) is arranged on base (6), and jack (7) is provided with the support (4) for brace summer (2); Base (6) is provided with for measuring the dial gage (8) of support (4) jacking amount; The outer wall that supports (4) is provided with some foil gauges (11), and each foil gauge (11) connects static strain testing instrument (10) by corresponding holding wire (12), and static strain testing instrument (10) connects computer (9).
2. a kind of safe and reliable joist post construction system according to claim 1, is characterized in that, described beam (2) is right-angled intersection beam, and infall is provided with post (3); The quantity of described joist post braced structures is four, is supported on respectively beam (2) bottom of post (3) surrounding.
3. a kind of safe and reliable joist post construction system according to claim 1, is characterized in that, beam (2) bottom surface is erected with the scaffold (5) as temporary supporting.
4. a kind of safe and reliable joist post construction system according to claim 1, is characterized in that, the some foil gauges (11) on the outer wall of support (4) are divided into some layers arranges, and interlamellar spacing is 1～1.5m.
5. a kind of safe and reliable joist post construction system according to claim 3, is characterized in that, on the outer wall of support (4), every layer is evenly provided with four foil gauges (11).
6. a kind of safe and reliable joist post construction system according to claim 1, is characterized in that, upper symmetrical two dial gages (8) of installing of each base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031414.6U CN203795884U (en) | 2014-01-17 | 2014-01-17 | Safe and reliable construction system for replacing columns by holding beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031414.6U CN203795884U (en) | 2014-01-17 | 2014-01-17 | Safe and reliable construction system for replacing columns by holding beams |
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| Publication Number | Publication Date |
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| CN203795884U true CN203795884U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420031414.6U Expired - Fee Related CN203795884U (en) | 2014-01-17 | 2014-01-17 | Safe and reliable construction system for replacing columns by holding beams |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758359A (en) * | 2014-01-17 | 2014-04-30 | 西安建筑科技大学 | Safe and reliable construction system for replacing columns by sustaining beams supported by columns and construction method for replacing columns by sustaining beams supported by columns |
| CN105133854A (en) * | 2015-09-29 | 2015-12-09 | 四川省建筑科学研究院 | Replacement unloading structure and construction method for vertical component |
-
2014
- 2014-01-17 CN CN201420031414.6U patent/CN203795884U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758359A (en) * | 2014-01-17 | 2014-04-30 | 西安建筑科技大学 | Safe and reliable construction system for replacing columns by sustaining beams supported by columns and construction method for replacing columns by sustaining beams supported by columns |
| CN103758359B (en) * | 2014-01-17 | 2016-09-14 | 西安建筑科技大学 | A kind of safe and reliable joist post construction system and construction method thereof |
| CN105133854A (en) * | 2015-09-29 | 2015-12-09 | 四川省建筑科学研究院 | Replacement unloading structure and construction method for vertical component |
| CN105133854B (en) * | 2015-09-29 | 2017-07-04 | 四川省建筑科学研究院 | The displacement unloading structure and construction method of a kind of vertical member |
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| 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 |
Granted publication date: 20140827 Termination date: 20150117 |
|
| EXPY | Termination of patent right or utility model |