CN102995668B - Field simple assembly ultralong static load reference beam - Google Patents
Field simple assembly ultralong static load reference beam Download PDFInfo
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- CN102995668B CN102995668B CN201210543603.7A CN201210543603A CN102995668B CN 102995668 B CN102995668 B CN 102995668B CN 201210543603 A CN201210543603 A CN 201210543603A CN 102995668 B CN102995668 B CN 102995668B
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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 be determine bearing capacity of pile foundation the most intuitively, the most reliable method.When carrying out Foundation Pile by Vertical Static Loading Test, buttress load can cause the distortion of reference point to the effect of foundation soil, be that reference pegs can change and rises or sink with the vertical displacement of foundation soil, and be placed on datum line beam on reference pegs, also can do with reference pegs and rise or subsiding movement, because being subject to the dial gage of inspection stake displacement, detection is arranged on datum line beam, therefore, the displacement meeting of datum line beam directly affects the accuracy that is subject to inspection stake test result.
< < building foundation detects standard > > (DBJ15-60-2008) regulation: to large diameter pile static loading test, when datum line beam length reaches 12m or when above, its reference pegs and still should reference pegs displacement be monitored during designing requirement shown in discontented foot table by distance.
Be subject to the distance between inspection stake, anchoring pile (ballast platform buttress) and reference pegs
< < architecture foundation pile inspection specifications > > (JGJ106-2003) the simple and easy way that displacement is monitored to reference pegs is in the vertical displacement with the steel wire observation reference pegs of level gauge or tensioning away from buttress place, but this technical specification the not mentioned reference pegs displacement data observing that how to adopt are revised the pile foundation settlement data of measuring acquisition.And, domestic also there are no the method that can accurately revise pile foundation settlement data.In addition, large-tonnage preloading buttress be there is to the situation of obviously sinking, domesticly also not yet occur reliable settlement measurement method.
In Practical Project, the data that existing way Shi Yi secondary observation station obtains are revised the pile foundation displacement data of test, and secondary observation be monitoring criteria stake displacement, are generally to adopt the steel wire of level gauge or tensioning to observe the vertical displacement of reference pegs.But the defect of this method is: the data that ⑴Yi secondary observation station obtains are revised the pile foundation displacement data of test, owing to there is no unified modification method, the uncertainty of whole baseline system is increased, may there is larger error in the correction data of gained; (2) when using level gauge to carry out secondary observation, there is larger difficulty in the installation of levelling rod and observation, is 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, simple and easy quick, the simple on-site assembly type overlength static load datum line beam that can guarantee experimental data result accuracy, have good stability is installed, when processing pile foundation displacement data, without adopting secondary observation the data obtained to revise, avoided strengthening because revising the pile foundation displacement data error causing.
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, between described joggle beam, by the structure that removably connects, is connected.
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 meets the regulation that < < building foundation detects standard > >, now without to reference pegs displacement monitor, avoided the observation of employing secondary, reference pegs keeps sufficiently long distance away from buttress and with being subject to inspection stake, has guaranteed the accuracy of pile foundation test data; In addition, of the present invention simple in structure, beam body is to be assembled by joggle beam, therefore can complete 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, and structure structure with bolts removably connects described in.
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 is fixed by anchor part; And described side connecting plate is arranged on the two sides of these two i shaped steel webs, 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, and 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 modification of the present invention, between described two beam bodies, have additional connecting rod, 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.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 beam body; Or described connecting rod adopts reinforcing bar, and described steel bar welding is connected on beam body.
Compared with prior art, the present invention has following significant effect:
(1) the present invention avoids adopting secondary observation, therefore needn't use secondary observation the data obtained correction pile foundation settlement data, and reference pegs keeps away from buttress and with being subject to inspection stake the distance meeting design requirement, and has guaranteed the accuracy of pile foundation test data.
(2) the present invention is simple in structure, and datum line beam is to be assembled by joggle beam, therefore can complete fast splicing at the scene, and have good stability.
(3) the present invention is simple, and between joggle beam, johning knot is real compact close, and operating efficiency is higher.
(4) 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.
(5) between beam body of the present invention, have additional V font connecting rod, can make the connection of beam body more stable, further reduce the disturbance of outer bound pair datum line beam.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
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
As 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 of long joggle beams, between joggle beam 11, by the structure that removably connects, is connected.Avoid adopting secondary observation, reference pegs keeps sufficiently long distance away from buttress and with being subject to inspection stake, has guaranteed the accuracy of pile foundation test data.
Joggle beam 11 adopts H type i iron, and the top flange 51 of i iron, bottom flange 61 and web 71 are bolted respectively structural correspondence and connect, i.e. detachable syndeton structure with bolts.In the present embodiment, bolt fastening structure comprises junction plate and anchor part, anchor part adopts bolt 3 and nut 4, junction plate comprises three upper junction plates 5, three lower connecting plates 6 and two side connecting plates 7, upper and lower junction plate is horizontally set on respectively on the two sides of the 51Ji bottom flange, two i shaped steel top flanges 61 achieving a butt joint, and is fixed through rear mounting nuts by bolt; And side connecting plate 7 is arranged on the two sides of web 71 of these two i shaped steels, the plate face of side connecting plate 7 and web 71 is affixed to merge by bolt to be fixed through rear mounting nuts.Connecting portion 10 at two joggle beams 11 adopts multidirectional being connected and fixed, and can limit the relative displacement of joggle beam, thereby reduces the amount of deflection that datum line beam produces; And can complete fast splicing at the scene, the having good stability of datum line beam.
Referring to Fig. 4, between two beam bodies 1, have additional connecting rod 8, connecting rod 8 connects into an integral body by 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 friction-type bolt anchoring, and when connecting rod 8 adopts reinforcing bar, is that steel bar welding is connected on beam body.Can make the connection of beam body 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; With bolt anchoring, be covered in upper junction plate 5 and the lower connecting plate 6 of two i shaped steel connecting portions 10, the simple on-site of realizing 24m static load bolt connection datum line beam is assembled; According to < < building foundation, detect standard > > operation setting reference pegs, be subject to two beam bodies of inspection stake 20 both sides disposed at equal distance, strip steel plate passes through friction-type bolt anchoring, or reinforcing bar is welded.
Embodiments of the present invention are not limited to this, according to foregoing of the present invention, according to ordinary skill knowledge and the customary means of this area, do not departing under the above-mentioned fundamental technics thought of the present invention prerequisite, the concrete structure of removably connect between joggle beam of the present invention structure, joggle beam and the connected mode between beam body etc. also have other embodiment; In addition, can determine according to actual conditions the quantity of the joggle beam that forms beam body; Therefore the present invention can also make modification, replacement or the change of other various ways, within all dropping on rights protection scope of the present invention.
Claims (5)
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, between described joggle beam, by the structure that removably connects, is connected; Between described two beam bodies, have additional connecting rod, described connecting rod links into an integrated entity two beam bodies; 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.
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, and structure structure with bolts removably connects described in.
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 is fixed by anchor part; And described side connecting plate is arranged on the two sides of these two i shaped steel webs, 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 adopts screw bolt and nut.
5. simple on-site assembly type overlength static load datum line beam according to claim 4, is characterized in that: described connecting rod adopts strip steel plate, and described strip steel plate is anchored on beam body; Or described connecting rod adopts reinforcing bar, and described steel bar welding is connected on 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 |
|---|---|---|---|
| CN201210543603.7A CN102995668B (en) | 2012-12-14 | 2012-12-14 | Field simple assembly ultralong static load reference beam |
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| CN102995668A CN102995668A (en) | 2013-03-27 |
| CN102995668B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108951720B (en) * | 2018-06-20 | 2021-02-09 | 中冶成都勘察研究总院有限公司 | Reference pile and reference beam for static load test |
| 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 | Priority date | Publication date | Assignee | Title |
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| GB2323174B (en) * | 1997-03-14 | 2000-08-09 | Kvaerner Cementation Found Ltd | Automatic static load testing for piles |
| CN100560875C (en) * | 2007-04-25 | 2009-11-18 | 广东省建筑科学研究院 | The retrofit testing method of single-pile vertical orientation resistance to plucking static loading test |
| 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 |
| CN102277884B (en) * | 2011-05-17 | 2013-05-22 | 浙江大学城市学院 | Device for treating pile head for vertical static load test and construction method thereof |
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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 |