CN102995668A - Field simple assembly ultralong static load reference beam - Google Patents
Field simple assembly ultralong static load reference beam Download PDFInfo
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- CN102995668A CN102995668A CN2012105436037A CN201210543603A CN102995668A CN 102995668 A CN102995668 A CN 102995668A CN 2012105436037 A CN2012105436037 A CN 2012105436037A CN 201210543603 A CN201210543603 A CN 201210543603A CN 102995668 A CN102995668 A CN 102995668A
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- static load
- datum line
- connecting rod
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Abstract
The invention discloses a field simple assembly ultralong static load reference beam, comprising two beam bodies which are arranged in parallel, wherein length of each beam body is 12m at least, and a set position of a reference pile bearing the beam bodies can meet design requirements; each beam body is formed by abutting and assembling multiple splicing beams, namely the splicing beams are connected by virtue of a detachable connecting structure; and each splicing beam adopts an H-shaped I steel, and the upper flange, the lower flange and the web plate of the H-shaped I steel are respectively correspondingly connected by virtue of bolt connecting structures. According to the field simple assembly ultralong static load reference beam, the length of each beam body is determined by the set position of the reference pile, and the set position of the reference pile meets the design requirements, namely displacement of the reference pile is not required to be monitored at the moment, so that secondary observation is avoided, the reference pile is far away from a pier, a long enough distance is kept with a tested pile, and accuracy of test data of a pile foundation is guaranteed. The field simple assembly ultralong static load reference beam disclosed by the invention is simple in structure, simple and feasible, splicing can be completed on the scene quickly, working efficiency is higher, and stability is good.
Description
Technical field
The invention belongs to construction work pile foundation detection field, relate in particular to a kind of simple on-site assembly type overlength static load datum line beam.
Background technology
Foundation Pile by Vertical Static Loading Test is to determine directly perceived, the most reliable method of bearing capacity of pile foundation.When carrying out Foundation Pile by Vertical Static Loading Test, the buttress load can cause the distortion of reference point to the effect of foundation soil, be that reference pegs can change with the vertical displacement of foundation soil and rises or sink, and the datum line beam that is placed on the reference pegs also can be done rising or subsiding movement with reference pegs, because being examined the dial gage of a displacement is installed on the datum line beam, therefore, the displacement meeting of datum line beam directly affects the accuracy of being examined a test result.
" building foundation detection standard " (DBJ15-60-2008) stipulated: to the large diameter pile static loading test, when datum line beam length reaches 12m or when above, its reference pegs and still should the reference pegs displacement be monitored during designing requirement shown in the discontented foot table by distance.
Be subjected to the distance between inspection stake, anchoring pile (ballast platform buttress) and the reference pegs
" architecture foundation pile inspection specifications " (JGJ106-2003) displacement is monitored to reference pegs simple and easy way is away from the vertical displacement of buttress place with the steel wire observation reference pegs of level gauge or tensioning, but this technical specification and not mentionedly how to adopt the reference pegs displacement data that observes to revise to measure the pile foundation settlement data that obtain.And, domestic also there are no the method that can accurately revise the pile foundation settlement data.In addition, the situation of obviously sinking is appearred in large-tonnage preloading buttress, domesticly reliable settlement measurement method also not yet occurs.
In Practical Project, existing way is to revise the pile foundation displacement data of test with the data that secondary observation station gets, and secondary observation namely is monitoring criteria stake displacement, generally is the vertical displacement of adopting the steel wire observation reference pegs of level gauge or tensioning.But the defective of this method is: the data that ⑴ gets with secondary observation station are revised the pile foundation displacement data of test, owing to there is not unified modification method, so that the uncertainty of whole baseline system increases, may there be larger error in the correction data of gained; ⑵ when using level gauge to carry out secondary observation, and there are larger difficulty in the installation of levelling rod and observation, are easy to cause the error of secondary observation data.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, simple, install simple and easy quick, can guarantee experimental data as a result accuracy, the simple on-site assembly type overlength static load datum line beam that has good stability, when processing the pile foundation displacement data, need not to adopt secondary observation the data obtained to revise, the pile foundation displacement data error of having avoided causing because of correction strengthens.
Above-mentioned purpose of the present invention realizes by the following technical solutions: a kind of simple on-site assembly type overlength static load datum line beam, comprise two beam bodies of arranging side by side, it is characterized in that: the length of described beam body is at least 12 meters and the setting position of the reference pegs of carrier bar body is met design requirement; Each beam body assembles by several joggle beam docking, namely links to each other by the structure that removably connects between the described joggle beam.
The length of beam body of the present invention is determined by the setting position of reference pegs, and the setting position of reference pegs satisfies the regulation of " building foundation detection standard ", namely need not to reference pegs displacement this moment monitors, avoided the observation of employing secondary, reference pegs keeps sufficiently long distance away from buttress and with being subjected to the inspection stake, has guaranteed the accuracy of pile foundation test data; In addition, of the present invention simple in structure, the beam body is to be assembled by joggle beam, therefore can finish fast splicing at the scene, and operating efficiency is higher, and has good stability.
As a kind of preferred embodiment of the present invention, described joggle beam adopts H type i iron, and the top flange of described i iron, bottom flange and web are bolted respectively structural correspondence and connect, i.e. the described structure that removably connects structure with bolts.
As one embodiment of the present invention, described bolt fastening structure comprises junction plate and anchor part, described junction plate comprises upper and lower junction plate and side connecting plate, and described upper and lower junction plate is horizontally set on respectively on the two sides of two described i shaped steel top flanges achieving a butt joint and bottom flange and by anchor part and fixes; And described side connecting plate is arranged on the two sides of these two i shaped steel webs, and the plate face of described side connecting plate and web is affixed to merge and is fixed by anchor part.Anchor part can adopt screw bolt and nut.Because the length of beam body is longer, so the amount of deflection of beam body is comparatively obvious, the connecting portion of joggle beam is connected and fixed from multi-direction, can reduce the amount of deflection of beam body, further improves the accuracy of pile foundation displacement data.
In order to reduce the disturbance of outer bound pair datum line beam, as a kind of improvement of the present invention, have additional connecting rod between described two beam bodies, described connecting rod links into an integrated entity two beam bodies.
As one embodiment of the present invention, the oblique setting of described connecting rod and arranging side by side, two connecting rod integral body of adjacent setting are in the shape of the letter V.The V font is arranged and can so that the connection of beam body is more stable, further be reduced the disturbance of outer bound pair datum line beam.
The present invention also has following embodiment, and described connecting rod adopts strip steel plate, and described strip steel plate is anchored on the beam body; Perhaps described connecting rod adopts reinforcing bar, and described steel bar welding is connected on the beam body.
Compared with prior art, the present invention has following significant effect:
⑴ the present invention avoids adopting secondary observation, therefore needn't use secondary observation the data obtained correction pile foundation settlement data, reference pegs away from buttress and with examined stake and kept the distance that meets design requirement, guaranteed the accuracy of pile foundation test data.
⑵ the present invention is simple in structure, and datum line beam is to be assembled by joggle beam, therefore can finish fast splicing at the scene, and have good stability.
⑶ the present invention is simple, and johning knot is real compact close between the joggle beam, and operating efficiency is higher.
⑷ the present invention adopts multidirectional being connected and fixed at the connecting portion of joggle beam, has limited the relative displacement of joggle beam, has reduced the amount of deflection that datum line beam produces, and has further improved the accuracy of pile foundation test data.
⑸ have additional V font connecting rod between the beam body of the present invention, can so that the connection of beam body is more stable, further reduce the disturbance of outer bound pair datum line beam.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic top plan view of beam body of the present invention;
Fig. 2 is the schematic side view of beam body of the present invention;
Fig. 3 is the cross section cross-sectional schematic of two joggle beam connecting portions of the present invention;
Fig. 4 is the schematic top plan view of datum line beam of the present invention.
The specific embodiment
Shown in Fig. 1～4, be a kind of simple on-site assembly type of the present invention overlength static load datum line beam, comprise two beam bodies 1 of arranging side by side, referring to Fig. 4, in the present embodiment, the length of beam body 1 is 24 meters, and the setting position of the reference pegs 2 of carrier bar body 1 is met design requirement; Each beam body 1 assembles by several joggle beam docking, and in the present embodiment, beam body 1 is assembled by 11 docking of two 12 meters long joggle beams, namely links to each other by the structure that removably connects between the joggle beam 11.Avoid adopting secondary observation, reference pegs keeps sufficiently long distance away from buttress and with being subjected to the inspection stake, has guaranteed the accuracy of pile foundation test data.
Referring to Fig. 4, have additional connecting rod 8 between two beam bodies 1, connecting rod 8 connects into an integral body with two beam bodies 1.In the present embodiment, the oblique setting of connecting rod and arranging side by side, connecting rod 8 integral body of adjacent setting are in the shape of the letter V, connecting rod 8 can specifically adopt strip steel plate or reinforcing bar, strip steel plate passes through the friction-type bolt anchoring, and when connecting rod 8 adopts reinforcing bar, then is that steel bar welding is connected on the beam body.Can so that the connection of beam body is more stable, further reduce the disturbance of outer bound pair datum line beam.
Installation process of the present invention is: utilize bolt anchoring to be covered in the side connecting plate 7 of two i shaped steel connecting portions 10, i shaped steel is linked into an integrated entity; Be covered in upper junction plate 5 and the lower connecting plate 6 of two i shaped steel connecting portions 10 with bolt anchoring, realize that 24m static load bolt connects the simple on-site assembly unit of datum line beam; According to " building foundation detection standard " operation setting reference pegs, be subjected to two beam bodies of inspection stake 20 both sides disposed at equal distance, strip steel plate perhaps welds reinforcing bar by the friction-type bolt anchoring.
Embodiments of the present invention are not limited to this, according to foregoing of the present invention, ordinary skill knowledge and customary means according to this area, do not breaking away under the above-mentioned fundamental technics thought of the present invention prerequisite, the concrete structure of removably connect between the joggle beam of the present invention structure, joggle beam and the connected mode between the beam body etc. also have other embodiment; In addition, can determine according to actual conditions the quantity of the joggle beam of composition beam body; Therefore the present invention can also make modification, replacement or the change of other various ways, all drops within the rights protection scope of the present invention.
Claims (7)
1. a simple on-site assembly type overlength static load datum line beam comprises two beam bodies of arranging side by side, it is characterized in that: the length of described beam body is at least 12 meters and the setting position of the reference pegs of carrier bar body is met design requirement; Each beam body assembles by several joggle beam docking, namely links to each other by the structure that removably connects between the described joggle beam.
2. simple on-site assembly type overlength static load datum line beam according to claim 1, it is characterized in that: described joggle beam adopts H type i iron, the top flange of described i iron, bottom flange and web are bolted respectively structural correspondence and connect, i.e. the described structure that removably connects structure with bolts.
3. simple on-site assembly type overlength static load datum line beam according to claim 2, it is characterized in that: described bolt fastening structure comprises junction plate and anchor part, described junction plate comprises upper and lower junction plate and side connecting plate, and described upper and lower junction plate is horizontally set on respectively on the two sides of two described i shaped steel top flanges achieving a butt joint and bottom flange and by anchor part and fixes; And described side connecting plate is arranged on the two sides of these two i shaped steel webs, and the plate face of described side connecting plate and web is affixed to merge and is fixed by anchor part.
4. simple on-site assembly type overlength static load datum line beam according to claim 3 is characterized in that: described anchor part employing screw bolt and nut.
5. simple on-site assembly type overlength static load datum line beam according to claim 4, it is characterized in that: have additional connecting rod between described two beam bodies, described connecting rod links into an integrated entity two beam bodies.
6. simple on-site assembly type overlength static load datum line beam according to claim 5 is characterized in that: the oblique setting of described connecting rod and arranging side by side, two connecting rod integral body of adjacent setting are in the shape of the letter V.
7. simple on-site assembly type overlength static load datum line beam according to claim 6 is characterized in that: described connecting rod adopts strip steel plate, and described strip steel plate is anchored on the beam body; Perhaps described connecting rod adopts reinforcing bar, and described steel bar welding is connected on the beam body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210543603.7A CN102995668B (en) | 2012-12-14 | 2012-12-14 | Field simple assembly ultralong static load reference beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210543603.7A CN102995668B (en) | 2012-12-14 | 2012-12-14 | Field simple assembly ultralong static load reference beam |
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| CN102995668A true CN102995668A (en) | 2013-03-27 |
| CN102995668B CN102995668B (en) | 2014-12-10 |
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| CN201210543603.7A Active CN102995668B (en) | 2012-12-14 | 2012-12-14 | Field simple assembly ultralong static load reference beam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476357A (en) * | 2017-08-18 | 2017-12-15 | 福建省永正工程质量检测有限公司 | A kind of improved method of static-load testing device datum line beam |
| CN108951720A (en) * | 2018-06-20 | 2018-12-07 | 中冶成都勘察研究总院有限公司 | A kind of static load test reference stake and datum line beam |
| CN109570348A (en) * | 2019-02-13 | 2019-04-05 | 王勇 | A kind of bending upper die fast fixture and bending machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323174A (en) * | 1997-03-14 | 1998-09-16 | Kvaerner Cementation Found Ltd | Automatic static load testing for piles |
| CN101046097A (en) * | 2007-04-25 | 2007-10-03 | 广东省建筑科学研究院 | Improved test method for vertical draw-resisting dead load test of single Pile |
| CN201520988U (en) * | 2009-10-10 | 2010-07-07 | 中交上海港湾工程设计研究院有限公司 | Physical pile group vertical uplift-resisting static load testing system |
| CN102277884A (en) * | 2011-05-17 | 2011-12-14 | 浙江大学城市学院 | Device for treating pile head for vertical static load test and construction method thereof |
-
2012
- 2012-12-14 CN CN201210543603.7A patent/CN102995668B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323174A (en) * | 1997-03-14 | 1998-09-16 | Kvaerner Cementation Found Ltd | Automatic static load testing for piles |
| CN101046097A (en) * | 2007-04-25 | 2007-10-03 | 广东省建筑科学研究院 | Improved test method for vertical draw-resisting dead load test of single Pile |
| CN201520988U (en) * | 2009-10-10 | 2010-07-07 | 中交上海港湾工程设计研究院有限公司 | Physical pile group vertical uplift-resisting static load testing system |
| CN102277884A (en) * | 2011-05-17 | 2011-12-14 | 浙江大学城市学院 | Device for treating pile head for vertical static load test and construction method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张学宏: "《建筑结构》", 31 December 2000, 中国建筑工业出版社 * |
| 郭立民等: "《建筑施工》", 30 June 2006, 中国建筑工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476357A (en) * | 2017-08-18 | 2017-12-15 | 福建省永正工程质量检测有限公司 | A kind of improved method of static-load testing device datum line beam |
| CN108951720A (en) * | 2018-06-20 | 2018-12-07 | 中冶成都勘察研究总院有限公司 | A kind of static load test reference stake and datum line beam |
| CN109570348A (en) * | 2019-02-13 | 2019-04-05 | 王勇 | A kind of bending upper die fast fixture and bending machine |
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| Publication number | Publication date |
|---|---|
| CN102995668B (en) | 2014-12-10 |
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Address after: 510500 martyrs East Road, Guangdong, Guangzhou No. 121 Patentee after: Guangdong Construction Academy Group Plc Address before: 510500 martyrs East Road, Guangdong, Guangzhou No. 121 Patentee before: Guangdong Prov. Inst. of Building Science |