CN201071515Y - Combined type inclined drawing column umbrella counterforce device - Google Patents
Combined type inclined drawing column umbrella counterforce device Download PDFInfo
- Publication number
- CN201071515Y CN201071515Y CNU2007200918466U CN200720091846U CN201071515Y CN 201071515 Y CN201071515 Y CN 201071515Y CN U2007200918466 U CNU2007200918466 U CN U2007200918466U CN 200720091846 U CN200720091846 U CN 200720091846U CN 201071515 Y CN201071515 Y CN 201071515Y
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- girder
- base
- pull bar
- combined type
- umbrella
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Abstract
The utility model relates to a composite type diagonal tensile column umbrella counterforce device which can effectively solves the problem of large-tonnage heaped load experiment. The technical proposal is that the device comprises a base, a middle vertical post and a tensile rod; wherein the middle vertical post is arranged on the base, the tensile rod is arranged on the middle vertical post rung-shaped main beams are arranged on the periphery of the base, a lower shaft base is arranged on the main beam in non-isometry or in isometry, an upper shaft base is arranged on the middle vertical post, the tensile rod is arranged on the upper shaft base and the lower shaft base through pin bases, and secondary beams with different lengths are arranged between the main beams from outside to inside in turn to form the umbrella-shaped composite type diagonal tensile counterforce mechanism. The utility model has the advantages of unique and novel structure, firmness, durability, convenient assembly and disassembly, easy conveyance, big-tonnage application and huge suitability; being the creative improvement of the large-tonnage heaped load implementation device.
Description
One, technical field
The utility model relates to the large-tonnage experimental rig, the oblique stay column umbrella of particularly a kind of combined type counterforce device.
Two, background technology
The test of the large-tonnage preloading at present several modes such as anchoring pile method, counterweight and anchoring pile counterweight associating counterforce device that adopt more.The anchoring pile method has advantages such as equipment is simple, safe and reliable, and the operating condition requirement is low.At present the anchoring pile that adopts adopts four anchors or more than four anchors, because the anchoring pile spacing can't be taken into account basic requirement, so anchoring pile often can not use as engineering piles, wastes bigger; Because problems such as construction period objectively cause the test period lengthening, influence the construction period in addition; Some areas are owing to stake type and engineering geology reason, and anchoring pile can not effectively provide counter-force, cause adopting this method test.As required, the part engineering adopts the preloading mode, and this mode mainly is divided into two kinds at present: 1. counterweight preloading, and this mode preloading speed is fast, and the duration is short, but cost is higher relatively and strict to site condition; 2. artificial sandbag preloading, this mode cost is cheap relatively, but speed is slow, efficient is low, and artifical influence factor is big, often has a strong impact on programming because the test period is long, and because apparatus factor can't carry out large-tonnage preloading test.
No matter be to adopt which kind of preloading mode, all need before preloading, make up the counter-force platform, and the structure of platform be to test process important influence.At present domestic girder steels and the i iron of adopting make up the counter-force platforms more, and when this device used, girder steel was positioned over by the jack of test pile top as girder, is positioned on the girder as distribution beam, to guarantee the rigidity of platform by many girder steels.The i iron that gathers at regular intervals on the distribution beam constitutes the counter-force platform.It is buttress that the platform distribution beam supports many employing cement blocks, in order to bear upper load weight.This kind platform is owing to be subjected to girder and distribution beam effect length to have problems such as effective preloading area is little, equipment is heavy, ancillary service is many, structure height is big, place bad adaptability.General existing equipment only can make up 96m
2Platform; Girder and distribution beam heaviness, the single girder 80kN that weighs, the installation and transportation inconvenience; Owing to requiring buttress must be able to keep the upper brace distortion, therefore need quantity bigger, and this weight can't cause very big waste as the load use owing to only participate in the platform support; Conventional girder steel i iron podium level is big, the preloading difficulty, and task difficulty is high.In addition, because the equipment heaviness, strict to the place operating condition, labor aptitude is poor.
Three, utility model content
At above-mentioned situation, the purpose of the utility model just provides the oblique stay column umbrella of a kind of combined type counterforce device, can effectively solve large-tonnage preloading test problem, the technical scheme of its solution is, include base, central post and pull bar, central post is contained on the base, and pull bar is contained on the central post, and the girder of rung shape is housed on the perimeter, axle bed under equidistant or not equidistant being equipped with on the girder, axle bed is housed on the central post, pull bar on key seat is contained in axle bed and following axle bed, between girder successively ecto-entad the different auxiliary girder of length is housed, constitute the umbrella shape combined type and tiltedly draw counter-force mechanism, the utility model novel structure uniqueness, sturdy and durable, easy accessibility, be easy to carrying, the application tonnage is big, and compliance is strong, is the inventive improvements to existing large-tonnage preloading device for carrying out said.
Four, description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
Fig. 3 is a central post structural front view of the present utility model.
Fig. 4 is a understructure front view of the present utility model.
Fig. 5 is a main beam structure front view of the present utility model.
Fig. 6 is Tiebar structure front view of the present utility model (pull bar has different 4 of length).
Five, the specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
Provide by Fig. 1, Fig. 2, the utility model includes base, central post and pull bar, central post is contained on the base, pull bar is contained on the central post, and the girder 1 of rung shape is housed on base 7 peripheries, axle bed 10 under equidistant or being equipped with of equidistant (seeing shown in Figure 5) on the girder 1, last axle bed 11 is arranged on the central post 8, pull bar is contained on axle bed 11 and the following axle bed 10 through key seat 9, and 1 of girder ecto-entad successively is equipped with the different auxiliary girder of length 12, and formation umbrella shape combined type tiltedly draws counter-force mechanism.In order to guarantee result of use, increase bearing capacity, reinforcing rib 6 is arranged on the girder 1, said pull bar is at least by from up to down being made of the different pull bar 2,3,4,5 of length, and constitutes combined types with the auxiliary girder 12 that is connected between every layer of pull bar and tiltedly draw the umbrella shape supporting mass.Each assembly is made by steel.
By said structure as can be seen, the utility model and cable stayed bridge are similar, and according to the principle design of slant-pull structure, bearing beam and central post rely on pull bar tiltedly to draw can constitute stable large span platform, evenly distributed load on the bearing beam is transmitted to central post, relies on central post to give jack loading transfer.This structure can obtain bigger preloading area when alleviating construction weight, and adopts easy connection can dismantle carrying easily.The utility model is:
A. integral body is a kind of umbellate form steel frame construction, and 1600 tons of the heavy counter-forces of raft can be provided;
B. can repeatedly make up according to the size of pile foundation test load scale, provide 4 combinations among Fig. 1, central post and girder, pull bar make up according to the load size; Overall structure is the bulk-breaking assembly type, can utilize artificial or crane is assembled.
C. effective preloading area of this device is 100-240 square metre, and the older preloading platform of maximum preloading area is big 2.4 times; At the bottom of the podium level, the preloading facility.
D. operating type by traditional manual work change into can be manually, machinery, artificial mechanism preloading, efficient obtains huge raising.
Central post 8 is made of the more piece assembling, provides among present embodiment Fig. 1 by 7 joints to form, and overall height 7250mm is welded by welded tube, flange, reinforcement steel plate, in the vertical rod lifting draw ring is arranged in one joint of top, wall thickness 22mm, and material is a Q345 low-alloy steel.Base 7 high 850mm, upper diameter 830mm, lower diameter 1000mm, be lined with four-bladed vane in the column tube, periphery is pressed fixedly casing of equal portions welding, strengthens with circular steel plate, doughnut-shaped steel plate and triangular steel plate up and down, and foot and jack binding site are placed diameter 1000mm, thickness 20mm steel plate.Diameter 830mm flange constituted about all the other were reached by the different 630mm welded tube of length, and the flange periphery is reinforced by triangular steel plate, and the lifting draw ring is installed on the column of top.
Girder 1 is made of more piece, adopts 36
#The heavy i iron of B is made, and is middlely connected by casing, provides 4 joints among present embodiment Fig. 5, and 700-800mm is between left and right apart from welding vertical strengthening ribs 6 at interval on the girder, and reinforcing rib is made by the 20mm steel plate, and enough compressive strength is arranged when guaranteeing its work.Near casing two-end part weld side to steel plate, produce yield deformation in the bigger part of these stress when avoiding its work.Key seat is made by the 20mm steel plate, and tensile strength is greater than 1000kN.
Pull bar is the tensional element that connects central post and girder, adopts external diameter 108mm, and the seamless steel pipe of wall thickness 10mm is made, and length is divided into four kinds (being pull bar 2,3,4,5 among Fig. 1).The pull bar two ends are respectively welded a key seat and are used for and being connected of central post and girder, and steel pipe and key seat adopt the welding of tenon riveting structure.
Distribution auxiliary girder 12 usefulness i iron are cut into by certain size, are positioned over to constitute platform on the girder, top load power evenly are passed to girder, by 28
#The heavy i iron of B is made, total length 276m, and being divided into is 9 kinds of specifications.
The reinforcing rib 6 of girder has 8, prevents the horizontal tension of girder when being used for mechanical preloading; 132 of platform steel pipes, wherein long 4000mm is 108,2000mm length is 26, in order to auxiliary formation preloading platform; Totally 14 of benchmark beam length 2000mm are used for test observation; 64 of stay rod pins are used for being connected of railing and girder, central post; 58 of M27 high-strength bolts are used for connecting between central post, and are anti-shearing; Steel plate diameter 1000mm at the bottom of the central post is used for the liner of jack and central post base; Be furnished with hand hammer, crowbar, safety belt, box spanner overlap more (), be used for the assembling of the oblique stay column umbrella of combined type counterforce device.
The oblique stay column umbrella of combined type counterforce device overall height is 7250mm, and construction weight 330kN after all installing, adds distribution beam gross weight 462kN.298 of the number of components (not containing steel pipe, datum line beam), the maximum deadweight of member is less than 30kN.The preloading flat upper surface is that octagon is divided into four layers from inside to outside, can be assembled into four kinds of preloading areas as required, preloading amount 1000-16000kN, and unit area preloading amount is not less than 73kN.Platform girder, distribution beam and steel pipe height sum are 690mm, and normal testing circumstance lower platform overall height is less than 1000mm.The oblique stay column umbrella of combined type counterforce device performance parameter sees Table.
The oblique stay column umbrella of combined type counterforce device performance parameter table
| The platform number of turns | The length of side (mm) | Axial length (mm) | Effective area (m 2) | Preloading amount (kN) |
| 1 | 2920 | 7630 | 40.6 | 1000-2000 |
| 2 | 4833 | 12630 | 112.3 | 2000-6000 |
| 3 | 5828 | 15230 | 163.5 | 6000-12000 |
| 4 | 6746 | 17630 | 219.2 | 12000-16000 |
Advantage:
But a. in field operation is produced, can be combined according to the size of pile foundation test load branch's lifting, more adapt to engineering site place needs.
B. this novel preloading device center of gravity is lower, and original relatively standard type preloading platform, new equipment have field operation advantages such as fast, that the production duration is short, safety factor is high, cost of production is low are installed.
C. original relatively standard type preloading platform possesses that own wt is light, transportation economics is convenient, characteristics such as the platform area is big, weight capacity is big, preloading facility.
D. operating type can adopt manually, machinery, artificial mechanism adds preloading, reduces the test period, increases work efficiency.
Claims (3)
1. the oblique stay column umbrella of combined type counterforce device, include base, central post and pull bar, central post is contained on the base, pull bar is contained on the central post, it is characterized in that, the girder (1) of rung shape is housed on base (7) periphery, axle bed (10) under equidistant or not equidistant being equipped with on the girder (1), last axle bed (11) is arranged on the central post (8), pull bar is contained on axle bed (11) and the following axle bed (10) through key seat (9), between girder (1) successively ecto-entad the different auxiliary girder of length (12) is housed, constitute the umbrella shape combined type and tiltedly draw counter-force mechanism.
2. the oblique stay column umbrella of combined type according to claim 1 counterforce device is characterized in that reinforcing rib (6) is arranged on the said girder (1).
3. the oblique stay column umbrella of combined type according to claim 1 counterforce device, it is characterized in that, said pull bar is at least by from up to down being made of the different pull bar of length (2,3,4,5), and constitutes combined type with the auxiliary girder that is connected between every layer of pull bar (12) and tiltedly draw the umbrella shape supporting mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200918466U CN201071515Y (en) | 2007-09-10 | 2007-09-10 | Combined type inclined drawing column umbrella counterforce device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200918466U CN201071515Y (en) | 2007-09-10 | 2007-09-10 | Combined type inclined drawing column umbrella counterforce device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071515Y true CN201071515Y (en) | 2008-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200918466U Expired - Lifetime CN201071515Y (en) | 2007-09-10 | 2007-09-10 | Combined type inclined drawing column umbrella counterforce device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071515Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392463A (en) * | 2011-10-12 | 2012-03-28 | 浙江宝业建设集团有限公司 | Pile foundation static loading test device |
| CN102409704A (en) * | 2011-09-21 | 2012-04-11 | 云南锐索建设工程质量检测有限公司 | Umbrella type platform static load test equipment |
| CN114563200A (en) * | 2022-01-26 | 2022-05-31 | 河海大学 | Assembled large-span cable-stayed bridge power test system |
-
2007
- 2007-09-10 CN CNU2007200918466U patent/CN201071515Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409704A (en) * | 2011-09-21 | 2012-04-11 | 云南锐索建设工程质量检测有限公司 | Umbrella type platform static load test equipment |
| CN102392463A (en) * | 2011-10-12 | 2012-03-28 | 浙江宝业建设集团有限公司 | Pile foundation static loading test device |
| CN114563200A (en) * | 2022-01-26 | 2022-05-31 | 河海大学 | Assembled large-span cable-stayed bridge power test system |
| CN114563200B (en) * | 2022-01-26 | 2022-12-20 | 河海大学 | Assembled large-span cable-stayed bridge power test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |