CN115323893A - Foundation pit slope turnover type steel trestle - Google Patents
Foundation pit slope turnover type steel trestle Download PDFInfo
- Publication number
- CN115323893A CN115323893A CN202211061468.2A CN202211061468A CN115323893A CN 115323893 A CN115323893 A CN 115323893A CN 202211061468 A CN202211061468 A CN 202211061468A CN 115323893 A CN115323893 A CN 115323893A
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- steel trestle
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 91
- 239000010959 steel Substances 0.000 title claims abstract description 91
- 230000007306 turnover Effects 0.000 title claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of temporary road devices, in particular to a turnover type steel trestle used on a foundation pit slope. Steel trestle sets up directly over foundation ditch edge slope, and steel trestle extends along the edge of foundation ditch, steel trestle includes the support frame of bridge floor and support bridge floor, the support frame includes a plurality ofly and sets up along the bridge floor interval, the support frame is including setting up the crossbeam that is used for supporting the bridge floor under the bridge floor, the crossbeam level sets up and perpendicular to steel trestle's extending direction, be provided with the pillar about the crossbeam respectively, what the pillar was close to the foundation ditch edge is the short strut, keeps away from the foundation ditch edge is long pillar, and the pillar bottom extends to and is provided with the fixed basis of concrete on foundation ditch slope and the slope.
Description
Technical Field
The invention relates to the field of temporary road devices, in particular to a turnover type steel trestle used on a foundation pit slope.
Background
The interim steel trestle as the device that needs often use in the actual work progress, along with deep basal pit construction normalizes, in most foundation ditch work progress, because the reason that the foundation ditch top need put the slope, if need build interim road on the flat ground, then will occupy the land on scene, the road still must be abolished in the later stage, produces building rubbish, extravagant material, reduces the work efficiency.
To the narrow and small operation area in construction site, use turnover steel trestle device can reduce the place usable floor area, just can set up turnover steel trestle because the position of putting the slope at foundation ditch top, this kind of device installation is convenient, can have enough to meet the need, and extravagant material and polluted environment do not improve the work efficiency. It is very necessary to improve the installation convenience, the turnover utilization rate and the application to complex terrains in practical design.
Disclosure of Invention
The invention discloses a foundation pit slope turnover type steel trestle.
The technical problem to be solved is that: under the narrow and small condition in construction place, when the foundation ditch outside sets up construction road space not enough, how to reduce area in place and occupy.
In order to solve the technical problem, the foundation pit slope turnover type steel trestle adopts the following scheme.
A foundation pit slope turnover type steel trestle, the steel trestle is arranged right above a foundation pit edge slope, the steel trestle extends along the edge of the foundation pit,
the steel trestle includes the support frame of bridge floor and support bridge floor, the support frame includes a plurality ofly and sets up along the bridge floor interval, the support frame is including setting up the crossbeam that is used for supporting the bridge floor under the bridge floor, the crossbeam level sets up the extending direction of just perpendicular to steel trestle, be provided with the pillar about the crossbeam respectively, what the pillar was close to the foundation ditch edge is the short strut, keeps away from the foundation ditch edge is long strut, and the pillar bottom extends to and is provided with the fixed basis of concrete on foundation ditch slope and the slope.
Preferably, the length of the cross beam is adjustable, and the height of the long strut is adjustable.
Preferably, the cross beam comprises a left beam body and a right beam body, and one ends of the two beam bodies are connected in a sliding manner; and a beam locking device is arranged between the two beam bodies and used for fixing the two beam bodies.
Preferably, the beam body is made of channel steel and is divided into an outer channel steel and an inner channel steel, and one end of the inner channel steel is embedded into a groove of the outer channel steel;
the utility model discloses a beam locking device, including interior channel-section steel and outer channel-section steel, the crossbeam locking device includes that the spring is locked to the crossbeam, and the crossbeam locking device is provided with the supporting seat in the recess of interior channel-section steel, the spring sets up on the supporting seat for pressure spring and one end, and the crossbeam locking pin is connected to the other end of spring, the crossbeam locking pin inserts simultaneously in the locking hole of outer channel-section steel and interior channel-section steel.
Preferably, the long strut comprises an upper column body, a lower column body and a connecting body, the upper column body and the lower main body are steel pipes, the upper end and the lower end of the connecting body are respectively inserted into the upper column body and the lower main body and can slide up and down, and strut locking devices are arranged at the two ends of the connecting body;
the pillar locking device comprises a spring and a pillar locking pin, mounting grooves are formed in the upper end and the lower end of the connector, the spring is mounted in the mounting grooves, a plurality of locking holes are formed in the upper pillar body and the lower main body at vertical intervals, the pillar locking pin is inserted into the locking holes and the mounting grooves simultaneously, and the bottom of the pillar locking pin compresses the spring.
Preferably, the middle part of crossbeam is propped up and is equipped with branch, and the top of branch is provided with the top and holds in the palm, and the bottom of branch is connected with the base, the base passes through the stock to be fixed on the subaerial on foundation ditch slope.
Preferably, a tie stabilizing structure is arranged at the top of the long strut and comprises an inclined strut and a stay cable, the top of the inclined strut props the top of the long strut, and the bottom of the inclined strut is supported on the base; the upper end of the stay cable is anchored on the concrete fixing foundation at the bottom of the short strut, and the lower end of the stay cable is tied and fixed at the top of the long strut.
Preferably, two pull cables are fixed to the top of the long support, and the bottoms of the two pull cables are respectively fixed to concrete fixing bases at the bottoms of the short supports of the front support and the rear support of the support where the long support is located.
Preferably, both ends of the cross member are cantilevered out of the long pillars and the short pillars.
Preferably, the bridge floor is highly parallel and level with the bottom surface outside the foundation pit, and the outer edge of the bridge floor is located at the juncture of the foundation pit slope and the ground outside the foundation pit.
Compared with the prior art, the foundation pit slope turnover type steel trestle has the following beneficial effects:
in order to solve the problem that a construction road is difficult to be arranged around a foundation pit in a narrow site, the traditional asphalt pavement or concrete pavement is changed into a rigid trestle type turnable road, and a large amount of construction waste generated by dismantling the road in the construction site after the construction is finished is avoided.
Meanwhile, the rigid trestle is erected on the slope of the foundation pit and arranged along the edge of the foundation pit, so that the projection space of the slope on the side edge of the foundation pit, which cannot be effectively used originally, is utilized. The occupation of the road to the ground space of the construction site is avoided, and a temporary setting method of the construction road is found under the condition that the construction road cannot be set on the ground with a narrow site.
Specifically, because the slope of foundation ditch is the inclined plane of an slope, and the bridge floor needs to extend along the edge of foundation ditch, so the support frame that supports the bridge floor is the door type, and the pillar length that is located foundation ditch edge is the short pillar, and is located the pit depths pillar longer for long pillar, and the top height of long pillar and short pillar is unanimous, but the bottom height of long pillar is low for short pillar. Because the foundation pit slope is not hardened, in order to enable the long strut and the short strut to be stable, a concrete fixed foundation is arranged on the slope at the bottom of the long strut and the short strut.
Drawings
FIG. 1 is a schematic overall structure diagram of a foundation pit slope turnover type steel trestle of the invention;
FIG. 2 is a perspective view of a support bracket portion;
FIG. 3 is a floor plan view from the support stand portion;
FIG. 4 is a schematic structural view of a long strut;
FIG. 5 is a detail view of the cross beam;
fig. 6 is a cross-sectional view of the cross beam.
Description of the reference numerals:
1-a bridge deck, wherein the bridge deck,
2-a support frame, wherein the support frame,
2 a-beam, 2a 1-outer channel, 2a 2-inner channel, 2a 3-beam locking pin,
2 b-long strut, 2b 1-upper column, 2b 2-connector, 2b 3-lower body, 2b 4-strut locking pin,
2 c-a short strut(s),
3-fixing the concrete on the foundation,
4-a support rod is arranged on the upper portion of the frame,
5-a base, wherein the base is provided with a plurality of grooves,
6-diagonal brace rod
7-a pulling rope is arranged at the back of the rope,
8-slope.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the use of directional words such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to FIG. 1; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to solve the problem of how to reduce the occupied area of a site when the space for arranging a construction road outside a foundation pit is insufficient under the condition of a narrow construction site, the invention provides a foundation pit slope turnover type steel trestle, as shown in figures 1 to 5.
Foundation ditch slope rotation formula steel trestle, steel trestle set up directly over foundation ditch edge slope 8, and steel trestle extends along the edge of foundation ditch, steel trestle includes bridge floor 1 and support bridge floor 1's support frame 2, support frame 2 includes a plurality ofly and sets up along bridge floor 1 interval, support frame 2 is used for supporting bridge floor 1's crossbeam 2a including setting up under bridge floor 1, crossbeam 2a level sets up and perpendicular to steel trestle's extending direction, be provided with the pillar about crossbeam 2a respectively, what the pillar was close to the foundation ditch edge is short strut 2c, keeps away from the foundation ditch edge be long strut 2b, and the pillar bottom extends to and is provided with concrete fixed foundation 3 on foundation ditch slope 8 and the slope 8.
The foundation ditch is generally great than length, need set up a plurality of support frames 2 along bridge floor 1 of the landing stage at foundation ditch edge, and support frame 2 is door type structure. Because the bridge deck 1 is horizontal, the farther the bridge deck 1 goes into the foundation pit, the higher the height between the bridge deck 1 and the bottom of the slope 8 is, and therefore the support frame 2 comprises two long and short pillars and a cross beam 2a for connecting the two pillars.
For the safety of the trestle, as shown in fig. 3, the bridge deck 1 is flush with the bottom surface outside the foundation pit, and the outer edge of the bridge deck 1 is located at the junction of the foundation pit slope 8 and the ground outside the foundation pit. The bridge floor 1 of steel trestle just so with ground parallel and level to extend to in the foundation ditch, the stiff trestle about the vehicle of being convenient for can more effectual widen the construction site.
Preferably, the length of the cross beam 2a is adjustable, and the height of the long pillar 2b is adjustable. Further preferably, the height of the short strut 2c is also adjustable.
As shown in fig. 5 and 6, the cross beam 2a includes two left and right beams, and one ends of the two beams are connected in a sliding manner; and a cross beam 2a locking device is arranged between the two beam bodies and used for fixing the two beam bodies. The beam body is made of channel steel and is divided into an outer channel steel 2a1 and an inner channel steel 2a2, and one end of the inner channel steel 2a2 is embedded into a groove of the outer channel steel 2a 1; and interior channel-section steel 2a2 is less than outer channel-section steel 2a1, lets in the channel-section steel 2a2 can effectual embedding outside in the recess of channel-section steel 2a 1.
Interior channel-section steel 2a2 and outer channel-section steel 2a 1's edge of a wing is provided with a plurality of locking holes along self extending direction interval, and the locking hole setting is at outer channel-section steel 2a1 and interior channel-section steel 2a 2's the coincidence position that meets, crossbeam 2a locking device includes spring and crossbeam stop pin 2a3, be provided with the supporting seat in interior channel-section steel 2a 2's the recess, the spring sets up on the supporting seat for pressure spring and one end, crossbeam stop pin 2a3 is connected to the other end of spring, crossbeam stop pin 2a3 inserts simultaneously in outer channel-section steel 2a1 and the locking hole of interior channel-section steel 2a 2. The supporting seat is a steel plate welded on the inner channel steel 2a2, and one end of the spring is fixed on the supporting seat. The cross beam 2a locking devices are arranged in a plurality at intervals, so that the failure of the single cross beam 2a locking device is avoided.
As shown in fig. 4, the long pillar 2b includes an upper pillar 2b1, a lower pillar 2b3, and a connecting body 2b2, where the upper pillar 2b1 and the lower pillar 2b3 are steel pipes, upper and lower ends of the connecting body 2b2 are respectively inserted into the upper pillar 2b1 and the lower pillar 2b3 and can slide up and down, and pillar locking devices are disposed at two ends of the connecting body 2b 2.
Pillar locking device includes spring and pillar stop pin 2b4, and the upper and lower both ends of connector 2b2 are provided with the mounting groove, installs the spring in the mounting groove, is provided with a plurality of locking holes along last cylinder 2b1 and the vertical interval of lower cylinder 2b3, in pillar stop pin 2b4 inserted locking hole and mounting groove simultaneously, and pillar stop pin 2b 4's bottom pressure spring. The strut lock device is provided with a plurality of, that is, a plurality of strut lock pins 2b4 at both ends of the link body 2b2, respectively. The plurality of the pillar lock pins 2b4 can effectively prevent the stress concentration from being dispersed.
The upper column body 2b1 and the lower column body 2b3 are made of steel pipes, the connecting body 2b2 is made of a steel column or a steel pipe with a small size, preferably, a standard joint can be adopted, only enough compressive strength is needed, and two ends can be inserted into the upper column body 2b1 and the lower column body 2b3 and can slide along the upper column body 2b1 and the lower column body 2b 3.
Further, in order to avoid the stress concentration of channel-section steel 2a2 and outer channel-section steel 2a1 in crossbeam 2a middle part, the middle part of crossbeam 2a is equipped with branch 4, and the top of branch 4 is provided with the top and holds in the palm, and the bottom of branch 4 is connected with base 5, base 5 passes through the stock to be fixed at foundation ditch slope 8 subaerial. The height of the jacking can be adjusted, the base 5 is a steel plate for dispersing pressure, and the bottom of the supporting rod 4 is hinged on the base 5.
As shown in fig. 1, the top of the long pillar 2b is provided with a tie stabilizing structure, the tie stabilizing structure comprises a diagonal brace 6 and a guy cable 7, the top of the diagonal brace 6 props up the top of the long pillar 2b, and the bottom of the diagonal brace 6 is supported on the base 5; the upper end of the inhaul cable 7 is anchored on the concrete fixing foundation 3 at the bottom of the short strut 2c, and the lower end of the inhaul cable 7 is fixed at the top of the long strut 2b in a pulling mode.
And the top of the long strut 2b is fixed with two guy cables 7, and the bottoms of the two guy cables 7 are respectively fixed on the concrete fixed foundation 3 at the bottoms of the short struts 2c of the adjacent support frames 2 in front of and behind the support frame 2 where the long strut 2b is located.
As shown in fig. 3, the long strut 2b has a telescopic structure due to the need to adjust the height, and thus is not structurally stable as a separate body. Therefore, the inclined stay bars 6 are arranged for supporting the top of the long support column 2b, and then the stay ropes 7 are arranged for pulling the top of the long support column 2b, so that the top of the long support column 2b is ensured not to shake left and right, meanwhile, as shown in fig. 2, the stay ropes 7 are provided with two stay ropes 7, and the two stay ropes 7 respectively extend to the concrete fixing bases 3 at the bottoms of the short support columns 2c of the front support frame 2 and the rear support frame 2. The long pillars 2b can be stabilized in the front-rear direction.
As shown in fig. 3, both ends of the cross member 2a are cantilevered beyond the long pillars 2b and the short pillars 2 c. The width of the deck 1 corresponds to the length of the girders 2a, said girders 2a being aligned with said deck 1.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. A foundation pit slope turnover type steel trestle is characterized in that the steel trestle is arranged right above a foundation pit edge slope (8), the steel trestle extends along the edge of the foundation pit,
the steel trestle includes bridge floor (1) and support frame (2) of bridge floor (1), support frame (2) include a plurality ofly and set up along bridge floor (1) interval, support frame (2) are used for supporting crossbeam (2 a) of bridge floor (1) including setting up under bridge floor (1), crossbeam (2 a) level sets up and perpendicular to steel trestle's extending direction, be provided with the pillar about crossbeam (2 a) respectively, the pillar is close to foundation ditch edge for short strut (2 c), keeps away from foundation ditch edge for long pillar (2 b), and the pillar bottom extends to and is provided with concrete foundation (3) on foundation ditch slope (8) and slope (8).
2. The foundation pit slope turnaround steel trestle of claim 1, characterized in that the length of the beams (2 a) is adjustable and the height of the long struts (2 b) is adjustable.
3. The foundation pit slope turnover type steel trestle bridge according to claim 2, wherein the cross beam (2 a) comprises a left beam body and a right beam body, and one ends of the two beam bodies are connected in a sliding manner; a cross beam (2 a) locking device is arranged between the two beam bodies and used for fixing the two beam bodies.
4. The foundation pit slope turnover type steel trestle bridge of claim 3, wherein the beam body is made of channel steel, the beam body is divided into an outer channel steel (2 a 1) and an inner channel steel (2 a 2), and one end of the inner channel steel (2 a 2) is embedded into a groove of the outer channel steel (2 a 1);
the utility model discloses a steel structure, including interior channel-section steel (2 a 2) and outer channel-section steel (2 a 1), be provided with a plurality of locking holes along self extending direction interval on the edge of a wing of interior channel-section steel (2 a 2) and outer channel-section steel (2 a 1), crossbeam (2 a) locking device includes spring and crossbeam stop pin (2 a 3), be provided with the supporting seat in the recess of interior channel-section steel (2 a 2), the spring sets up on the supporting seat for pressure spring and one end, crossbeam stop pin (2 a 3) are connected to the other end of spring, insert in the locking hole of outer channel-section steel (2 a 1) and interior channel-section steel (2 a 2) simultaneously crossbeam stop pin (2 a 3).
5. The foundation pit slope turnover type steel trestle according to claim 2, wherein the long column (2 b) comprises an upper column (2 b 1), a lower column (2 b 3) and a connecting body (2 b 2), the upper column (2 b 1) and the lower column (2 b 3) are steel pipes, the upper end and the lower end of the connecting body (2 b 2) are respectively inserted into the upper column (2 b 1) and the lower column (2 b 3) and can slide up and down, and two ends of the connecting body (2 b 2) are provided with column locking devices;
pillar locking device includes spring and pillar stop pin (2 b 4), and the upper and lower both ends of connector (2 b 2) are provided with the mounting groove, installs the spring in the mounting groove, is provided with a plurality of locking holes along last cylinder (2 b 1) and lower cylinder (2 b 3) vertical interval, pillar stop pin (2 b 4) insert locking hole and mounting groove simultaneously in, and the bottom hold-down spring of pillar stop pin (2 b 4).
6. The foundation pit slope turnover type steel trestle according to claim 1, wherein a support rod (4) is supported in the middle of the cross beam (2 a), a jacking is arranged at the top of the support rod (4), a base (5) is connected to the bottom of the support rod (4), and the base (5) is fixed on the ground of a foundation pit slope (8) through anchor rods.
7. The foundation pit slope turnover type steel trestle bridge according to claim 6, wherein the top of the long strut (2 b) is provided with a tie stabilizing structure, the tie stabilizing structure comprises a diagonal strut (6) and a stay cable (7), the top of the diagonal strut (6) supports the top of the long strut (2 b), and the bottom of the diagonal strut (6) is supported on the base (5); the upper end of the stay cable (7) is anchored on the concrete fixed foundation (3) at the bottom of the short strut (2 c), and the lower end of the stay cable (7) is tied and fixed at the top of the long strut (2 b).
8. The foundation pit slope turnover type steel trestle according to claim 7, characterized in that two guys (7) are fixed at the top of the long strut (2 b), and the bottoms of the two guys (7) are respectively fixed on the concrete fixed foundation (3) at the bottoms of the short struts (2 c) of the adjacent support frames (2) in front of and behind the support frame (2) where the long strut (2 b) is located.
9. The foundation pit slope turnaround steel trestle of claim 1, wherein both ends of the beam (2 a) are cantilevered out of the long struts (2 b) and the short struts (2 c).
10. The foundation pit slope turnover type steel trestle bridge according to claim 1, characterized in that the bridge floor (1) is level with the bottom surface outside the foundation pit, and the outer edge of the bridge floor (1) is located at the junction of the foundation pit slope (8) and the ground outside the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211061468.2A CN115323893B (en) | 2022-08-31 | Foundation pit slope turnover type steel trestle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211061468.2A CN115323893B (en) | 2022-08-31 | Foundation pit slope turnover type steel trestle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115323893A true CN115323893A (en) | 2022-11-11 |
| CN115323893B CN115323893B (en) | 2024-09-27 |
Family
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB294913A (en) * | 1927-04-29 | 1928-07-30 | Charles Lloyd Maccarthy | Improvements in adjustable pit props |
| CN206768570U (en) * | 2017-03-22 | 2017-12-19 | 深圳市福田建安建设集团有限公司 | A kind of foundation ditch assembled steel trestle |
| CN213267538U (en) * | 2020-09-21 | 2021-05-25 | 重庆建工第一市政工程有限责任公司 | Leading hole platform for U-shaped sandstone riverbed steel trestle on shoal |
| CN214882883U (en) * | 2021-05-06 | 2021-11-26 | 中交第二航务工程局有限公司 | Be used for supplementary steel trestle of mountain tunnel entering hole |
| CN215668954U (en) * | 2021-07-13 | 2022-01-28 | 中建二局阳光智造有限公司 | Interim steel landing stage of using of site operation |
| CN216739221U (en) * | 2022-01-20 | 2022-06-14 | 成都市路桥工程股份有限公司 | Reinforcing device for steel trestle |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB294913A (en) * | 1927-04-29 | 1928-07-30 | Charles Lloyd Maccarthy | Improvements in adjustable pit props |
| CN206768570U (en) * | 2017-03-22 | 2017-12-19 | 深圳市福田建安建设集团有限公司 | A kind of foundation ditch assembled steel trestle |
| CN213267538U (en) * | 2020-09-21 | 2021-05-25 | 重庆建工第一市政工程有限责任公司 | Leading hole platform for U-shaped sandstone riverbed steel trestle on shoal |
| CN214882883U (en) * | 2021-05-06 | 2021-11-26 | 中交第二航务工程局有限公司 | Be used for supplementary steel trestle of mountain tunnel entering hole |
| CN215668954U (en) * | 2021-07-13 | 2022-01-28 | 中建二局阳光智造有限公司 | Interim steel landing stage of using of site operation |
| CN216739221U (en) * | 2022-01-20 | 2022-06-14 | 成都市路桥工程股份有限公司 | Reinforcing device for steel trestle |
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