CN117230775B - Construction method for quickly tamping large-thickness atrial backfill soil - Google Patents
Construction method for quickly tamping large-thickness atrial backfill soil Download PDFInfo
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- CN117230775B CN117230775B CN202311317922.0A CN202311317922A CN117230775B CN 117230775 B CN117230775 B CN 117230775B CN 202311317922 A CN202311317922 A CN 202311317922A CN 117230775 B CN117230775 B CN 117230775B
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- 238000010276 construction Methods 0.000 title claims abstract description 63
- 239000002689 soil Substances 0.000 title claims abstract description 25
- 230000001746 atrial effect Effects 0.000 title claims description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003351 stiffener Substances 0.000 description 7
- 238000005056 compaction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Road Paving Structures (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application relates to the technical field of house core backfill construction, and provides a large-thickness house core backfill quick tamping construction method aiming at the situation that large tamping equipment cannot enter a field when a traditional house core backfill soil tamping is implemented, comprising the following steps: s1: cleaning sundries on the surface of a foundation; s2: and (3) mounting a protection plate: paving a plurality of protection plates on a foundation beam positioned on an access path of construction equipment; the lower surface of the protection plate is provided with a plurality of flexible buffer strips; s3: paving backfill soil into the frame in a layered manner, and tamping the backfill soil in the frame by a large hydraulic ramming machine; backfilling and tamping the backfill soil in the frame to the designed elevation; s4: dismantling a protection plate on the foundation beam; s5: and (5) performing surface finishing and leveling construction on the backfill layer. The application has the effect of ensuring that the foundation beam is not easy to be damaged by pressure while being convenient for the construction of filling back soil and tamping when large-scale tamping equipment enters the frame.
Description
Technical Field
The application relates to the field of house core backfill construction, in particular to a large-thickness house core backfill soil rapid tamping construction method.
Background
The house core backfill construction refers to backfill ramming construction of earthwork in a frame formed by a plurality of longitudinally and horizontally distributed foundation beams after the foundation beams at the bottom of the ground building are constructed.
In the related art, when the house backfill construction of the foundation at the bottom of a large building is carried out, because of the existence of a foundation beam at the bottom of the building foundation, in order to reduce the damage to the foundation beam caused by the compression of the foundation beam when large construction equipment enters into a frame for construction, the construction equipment such as a large hydraulic rammer cannot normally enter into the frame for the compaction operation of backfill, the compaction construction of the backfill in the frame can only be carried out by manually compacting by the small construction equipment such as a frog rammer, and the compaction efficiency of the house backfill is extremely low.
Disclosure of Invention
The application provides a rapid tamping construction method for large-thickness atrial backfill, which aims to reduce the condition that a foundation beam is damaged by compression while construction equipment such as a large hydraulic tamper enters a sash for construction.
The application provides a rapid tamping construction method for large-thickness atrial backfill, which adopts the following technical scheme:
a construction method for quickly tamping large-thickness atrial backfill soil comprises the following steps:
S1: cleaning sundries on the surface of a foundation;
s2: and (3) mounting a protection plate: paving a plurality of protection plates on a foundation beam positioned on an access path of construction equipment; the lower surface of the protection plate is provided with a plurality of flexible buffer strips;
S3: paving backfill soil into the frame in a layered manner, and tamping the backfill soil in the frame by a large hydraulic ramming machine until the backfill soil in the frame is backfilled and tamped to the designed elevation;
s4: dismantling a protection plate on the foundation beam;
s5: and (5) performing surface finishing and leveling construction on the backfill layer.
Through adopting above-mentioned technical scheme, through lay a plurality of guard plates on the foundation beam of construction equipment business turn over route, utilize a plurality of guard plates of laying on the foundation beam to consolidate the protection to the foundation beam, utilize the flexible buffer strip of guard plate bottom to absorb vibration and the impact that construction equipment such as large-scale hydraulic ram machine produced when passing through the foundation beam simultaneously, be difficult for causing the damage to the foundation beam when making construction equipment such as large-scale hydraulic ram machine pass through the foundation beam, the operation condition is provided for the tamping operation that the follow-up large-scale hydraulic ram machine returns to carry out the backfill in the frame, in the follow-up room heart backfill work progress, accessible large-scale ram machine is tamped the backfill, compare the tradition and tamp the mode through small-size ram machine to the backfill, the efficiency is higher, the speed is faster, be convenient for realize the quick compaction construction of room heart backfill.
Preferably, limiting pieces are vertically and downwards arranged on two opposite sides of the bottom of the protection plate;
in step S2, the protection plate is laid on the foundation beam, and the limiting pieces on two sides of the bottom of the protection plate are respectively located on two opposite sides of the foundation beam.
Through adopting above-mentioned technical scheme, lay the guard plate on the foundation roof beam and make the relative both sides limiting plate of guard plate be located the foundation roof beam respectively and be located the both sides relatively, it is spacing to the guard plate to utilize two sets of locating parts, when reducing follow-up construction equipment etc. through the guard plate, takes the guard plate away from the condition of foundation roof beam, and the guard plate of being convenient for installs on the foundation roof beam more firmly.
Preferably, the limiting piece comprises a plurality of limiting rods vertically arranged on the lower surface of the protection plate downwards; when the flexible buffer strip at the bottom of the protection plate is abutted with the top of the foundation beam, the bottom end of the limiting rod is abutted with the foundation.
Through adopting above-mentioned technical scheme, when carrying out spacingly through guard plate both sides guard plate, still accessible a plurality of gag lever post carries out auxiliary stay to the guard plate, reduces the condition that load concentrated effect on the foundation beam on the guard plate was applyed to follow-up construction equipment when the guard plate.
Preferably, the limiting part further comprises a reinforcing rod, a plurality of limiting rods on the same limiting part are welded and fixed with the reinforcing rod, the reinforcing rods on the two groups of limiting parts are oppositely arranged, and the flexible plates are connected to one sides of the two groups of limiting parts, which are opposite to each other, of the reinforcing rods.
Through adopting above-mentioned technical scheme, be convenient for promote the connection wholeness of a plurality of gag lever posts on the same locating part through the stiffener, through set up the flexplate in two sets of stiffener relative one sides, when construction equipment comes and goes the guard plate in foundation roof beam top, accessible flexplate restriction stiffener takes place the rigidity to collide with the foundation roof beam, and then makes the difficult pressurized of foundation roof beam both sides damage.
Preferably, the upper surface of the protection plate is provided with a plurality of threaded holes;
In step S4, when the protection plate is removed, the eye bolt is screwed into the threaded hole; and the eye bolts are connected with a lifting appliance of the crane, and the protection plate is lifted off the top of the foundation beam through the crane.
Through adopting above-mentioned technical scheme, realize that eye bolt can dismantle and connect on the guard plate, with hoist and mount bolted connection, alright hang out the guard plate from the foundation beam through the hoist, be convenient for demolish the guard plate from the foundation beam top.
Preferably, in step S2, after the guard plates are laid on the base beam, soil is filled and compacted on opposite sides of the base beam to form the guide slope.
Through adopting above-mentioned technical scheme, through the setting of direction slope, the direction slope of the accessible foundation beam both sides of construction equipment accessible foundation beam is crossed the foundation beam and is come and go back and forth in the sash and construct, the business turn over sash of the construction equipment of being convenient for.
Preferably, in step S2, after the guide slope construction is completed, a plurality of support plates are laid on the surface of the guide slope.
Through adopting above-mentioned technical scheme, through the setting of backup pad, be convenient for through the area of contact between backup pad increase construction equipment and the direction slope, be favorable to reducing the condition that the direction slope takes place to collapse because of the concentrated effect of load in the contact department of direction slope when construction equipment passes through the direction slope.
Preferably, main ear plates are arranged on two opposite sides of the protection plate; an auxiliary ear plate is arranged on one side of the supporting plate;
In step S2, when the support plates are laid, the support plates on the guiding slope are made to be opposite to the protection plates on the foundation beam one by one, and the auxiliary lug plates on the side edges of the support plates are connected to the main lug plates on the side edges of the protection plates through bolts.
Through adopting above-mentioned technical scheme, realize being favorable to reducing construction equipment when the slope is led to the foundation beam both sides to the backup pad that leads the slope surface when being favorable to reducing the backup pad that construction equipment passed through the foundation beam both sides and taking away the condition of direction slope, when follow-up dismantlement guard plate simultaneously, can take the backup pad of guard plate both sides together from the direction slope surface, the dismantlement of the backup pad of being convenient for, on the other hand can fold the backup pad and accomodate on the guard plate when follow-up accomodating the guard plate for the storage of guard plate and backup pad both is deposited.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through propping up the protection plate in the foundation beam top, utilize the guard plate to protect the foundation beam, when reducing large-scale construction equipment such as large-scale hydraulic rammer and passing through the foundation beam, the foundation beam is difficult for receiving the pressure and damages, satisfies large-scale hydraulic rammer's entering construction condition, the quick tamp of backfill layer in the sash of being convenient for.
2. The limiting piece comprises a plurality of limiting rods arranged on the side edges of the bottom of the protection plate, and when the flexible protection strip at the bottom of the protection plate is abutted to the surface of the foundation beam, the bottom ends of the limiting rods are abutted to the foundation; on the one hand, when being convenient for restrict the guard plate to shift through the gag lever post of guard plate bottom both sides, accessible a plurality of gag lever posts carry out auxiliary stay to the guard plate, reduce the condition that the load of exerting on the guard plate when construction equipment such as follow-up large-scale hydraulic rammer when the guard plate is whole concentrated on the foundation beam.
3. When the supporting plate is paved on the guiding slope, the auxiliary lug plate on the supporting plate is connected to the main lug plate on the side edge of the protecting plate through a bolt; on the one hand, the connection between the support plate and the protection plate can be realized, so that when construction equipment such as a large hydraulic tamper passes through the support plate, the support plate is taken away from the guide slope, and meanwhile, the protection plate can be removed from the guide slope together in the follow-up process of the protection plate from the foundation beam.
Drawings
Fig. 1 is a schematic view illustrating a state in which a shielding plate is mounted to a foundation beam according to an embodiment of the present application.
Fig. 2 is a schematic structural view illustrating a shielding plate according to an embodiment of the present application.
Fig. 3 is a schematic view illustrating a flexible bumper strip at the bottom of a fender according to an embodiment of the application.
Fig. 4 is a schematic view illustrating a state of a construction guide slope according to an embodiment of the present application.
Fig. 5 is a schematic view showing a state in which the support plate is mounted according to the embodiment of the present application.
Fig. 6 is an enlarged schematic view of the portion a in fig. 5.
Fig. 7 is a schematic view showing a state in which backfill in a sash is rammed by a large hydraulic ramming machine according to an embodiment of the present application.
Fig. 8 is a schematic view illustrating a state when the shielding plate is removed according to the embodiment of the present application.
Reference numerals illustrate:
1. A foundation; 10. a foundation beam; 11. a sash; 2. a protection plate; 20. a flexible buffer strip; 21. a limit rod; 22. a reinforcing rod; 221. a flexible board; 23. a main ear plate; 24. a threaded hole; 25. a rubber stopper; 3. a guide ramp; 4. a support plate; 41. and a pair of ear plates.
Detailed Description
The application is described in further detail below with reference to fig. 1-8.
The embodiment of the application discloses a construction method for quickly tamping large-thickness atrial backfill, which comprises the following steps with reference to fig. 1 and 2:
S1: cleaning sundries on the surface of the foundation 1.
S2: and (2) mounting a protection plate: a plurality of protection plates 2 are paved on a foundation beam 10 positioned on the access path of construction equipment.
Referring to fig. 2 and 3, two sets of threaded holes 24 are formed in the upper surface of the protection plate 2, the two sets of threaded holes 24 are respectively located at two ends of the protection plate 2, and rubber plugs 25 are inserted into the threaded holes 24.
The flexible buffer strips 20 are uniformly arranged at the bottom of the protection plate 2, the length direction of the flexible buffer strips 20 is perpendicular to the length direction of the protection plate 2, in the embodiment, the protection plate 2 is a patterned steel plate, the flexible buffer strips 20 are square rubber strips, and the flexible buffer strips 20 are fixedly adhered to the lower surface of the protection plate 2 through glue. Through the setting of flexible buffer strip 20, when laying guard plate 2, with the flexible buffer strip 20 butt of guard plate 2 downside at foundation beam 10 top, when follow-up construction equipment passes through foundation beam 10, accessible guard plate 2 consolidates the protection to foundation beam 10 on the one hand, the cooperation absorbs the vibration impact that produces when construction equipment such as large-scale hydraulic rammer through the flexible buffer strip 20 of guard plate 2 bottom passes through, and then is convenient for when satisfying the operation of large-scale construction equipment entering sash 11 for foundation beam 10 is difficult for the pressurized damage.
Limiting pieces are arranged on two opposite sides of the bottom of the protection plate 2; the protection plate 2 and the limiting parts on two sides form a groove-shaped structure for embedding the foundation beam 10. The limiting piece comprises a plurality of limiting rods 21 vertically fixed on the lower surface of the protection plate 2; the locating part still includes stiffener 22, and stiffener 22 and a plurality of gag lever post 21 welded fastening and stiffener 22 length direction and guard plate 2 length direction parallel arrangement are convenient for promote the connection wholeness of a plurality of gag lever posts 21 on the same locating part through stiffener 22. The reinforcing rods 22 on the two sets of limiting members are oppositely arranged, and the flexible plates 221 are fixedly adhered to opposite sides of the reinforcing rods 22 of the two sets of limiting members, wherein the flexible plates 221 are rubber plates in the embodiment.
Referring to fig. 1 and 2, through setting up the locating part in guard plate 2 bottom both sides, lay guard plate 2, with foundation beam 10 embedding to between the locating part of guard plate 2 bottom both sides, accessible two sets of locating part carry out spacingly to guard plate 2, when reducing follow-up construction equipment through guard plate 2, take guard plate 2 away from the condition of foundation beam 10, the guard plate 2 of being convenient for is established on foundation beam 10 more firmly cover.
Through the reinforcing rods 22 on two sets of locating parts all being provided with the flexible board 2212 on opposite one side, lay guard plate 2 on foundation beam 10 the follow-up back, be convenient for keep apart the protection through the clearance between flexible board 221 reinforcing rods 22 and the foundation beam 10, when reducing the big construction equipment of follow-up and come back and forth guard plate 2 on foundation beam 10, drive the condition that gag lever post 21 and foundation beam 10 side take place rigid collision.
When the flexible buffer strip 20 at the bottom side of the protection plate 2 is abutted to the top of the foundation beam 10, the bottom end part of the limiting rod 21 is abutted to the surface of the foundation 1; through the setting, lay guard plate 2 on foundation beam 10 afterwards, when spacing foundation beam 10 is carried out through the gag lever post 21 of guard plate 2 bottom both sides, accessible gag lever post 21 carries out auxiliary stay to guard plate 2, reduces the condition that load that the big construction equipment of follow-up applyed on guard plate 2 when passing through guard plate 2 concentrated effect on foundation beam 10.
The specific steps of step S2 are as follows:
S2.1: a plurality of protection plates 2 are sequentially laid on the foundation beam 10.
S2.2: referring to fig. 1 and 4, the opposite sides of the base beam 10 on the traveling path of the construction equipment are backfilled with plain soil and rammed by a frog tamper to form guide slopes 3 so that the following construction equipment passes over the base beam 10 by the guide slopes 3 on the opposite sides of the base beam 10.
S2.3: referring to fig. 4 and 5, a plurality of support plates 4 are laid on the guide slope 3 such that the plurality of support plates 4 are in one-to-one correspondence with the plurality of protection plates 2 on the foundation beam 10. In the present embodiment, the support plate 4 is a patterned steel plate. The contact area between the construction equipment and the guide slope 3 is conveniently increased through the support plate 4, so that the guide slope 3 is not easy to collapse and deform.
Referring to fig. 5 and 6, two sets of main ear plates 23 protrude from opposite sides of the protection plate 2, and two sets of auxiliary ear plates 41 are provided on one side of the support plate 4 corresponding to the two sets of main ear plates 23 on the side of the protection plate 2;
in step S2.3, the support plate 4 is laid on the guiding slope 3, and the auxiliary ear plate 41 on the side of the support plate 4 is connected to the main ear plate 23 on the side of the protection plate 2 through a bolt; so as to realize the fastening connection of the support plate 4 and the protection plate 2, and the support plate 4 is not easy to be taken away from the corresponding guiding slope 3 when the follow-up construction equipment passes through the support plate 4.
S3: paving backfill soil into the frame 11 in a layered manner, and tamping the backfill soil in the frame 11 by a large hydraulic ramming machine; until backfill in the sash 11 is backfilled and tamped to the design elevation.
Referring to fig. 7, the specific steps of step S3 are as follows:
S3.1: dumping the backfilled earthwork transportation into the frame 11 through a dump truck; the dump truck travels at a reduced speed as it passes the foundation beam 10.
S3.2: spreading and leveling backfilled earthwork in the frame 11 by a forklift; the forklift is required to travel at a reduced speed when passing the foundation beam 10.
S3.3: tamping backfill in the frame 11 by a large hydraulic ramming machine; in this embodiment, the large hydraulic ramming machine is changed from the existing loader to the ramming machine, and backfill is rammed at least three times per layer. The tamping process is characterized in that a tamping half tamper is adopted, the tamping half tamper is connected, the rows are connected, and the tamping half tamper is crisscrossed and uniformly distributed without gaps.
Before use, checking whether sundries exist or not, whether the particle size meets the regulation, and whether the water content of the plain soil is in a controlled range or not; if the water content is higher, the measures of scarification, airing or even mixing with dry soil can be adopted; if the moisture content of plain soil is low, measures such as pre-sprinkling wetting can be adopted.
And each layer of backfill layer is tamped by a cutting ring for sampling, and the next backfill layer can be constructed after the sampling result is qualified.
S4: the guard plates 2 on the foundation beam 10 are removed. Referring to fig. 8, the specific steps of step S4 are as follows:
S4.1: removing the rubber stopper 25 from the screw hole 24;
S4.2: screwing the eye bolt into the threaded hole 24;
s4.3: the lifting bolt is connected with a lifting appliance of the crane car through a steel wire rope;
s4.4: lifting the protection plate 2 away from the foundation beam 10 by a crane;
S4.5: repeating the steps S4.1-S4.4 until the dismantling of all the protection plates 2 is completed;
s4.6: the gap between the guide slope 3 and the foundation beam 10 and the gap between the guide slope 3 and the backfill layer are filled with backfill and rammed by a frog rammer.
S5: and (3) surface finishing and leveling construction of the backfill layer: and (3) carrying out stay wire leveling on the surface of the backfill layer, carrying out leveling on the part exceeding the designed elevation, and timely filling backfill and tamping through a frog ramming machine on the part lower than the designed elevation.
According to the application, the plurality of protection plates 2 are paved on the foundation beam 10, and the foundation beam 10 is reinforced and protected by the protection plates 2 and the plurality of flexible buffer strips 20 at the bottom side of the protection plates 2, so that construction equipment such as a subsequent large-scale hydraulic ramming machine and the like can smoothly enter the frame 11 through the foundation beam 10 and perform construction, and meanwhile, the foundation beam 10 is not easy to be damaged due to compression, so that the ramming construction of the house backfill soil is faster and more convenient.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. A construction method for quickly tamping large-thickness atrial backfill soil is characterized by comprising the following steps: the method comprises the following steps:
S1: cleaning sundries on the surface of a foundation (1);
S2: and (3) installing a protection plate (2): paving a plurality of protection plates (2) on a foundation beam (10) positioned on an access path of construction equipment; the lower surface of the protection plate (2) is provided with a plurality of flexible buffer strips (20);
s3: paving backfill soil into the frame (11) in a layered manner, and tamping the backfill soil in the frame (11) by a large hydraulic ramming machine; backfill soil in the frame (11) is backfilled and tamped to the designed elevation;
S4: dismantling a protection plate (2) on the foundation beam (10);
S5: performing surface finishing and leveling construction on the backfill layer;
Limiting pieces are vertically and downwards arranged on two opposite sides of the bottom of the protection plate (2);
in the step S2, the protection plate (2) is paved on the foundation beam (10) and limiting pieces at two sides of the bottom of the protection plate (2) are respectively positioned at two opposite sides of the foundation beam (10);
The limiting piece comprises a plurality of limiting rods (21) which are vertically and downwardly arranged on the lower surface of the protection plate (2); when the flexible buffer strip (20) at the bottom of the protection plate (2) is abutted with the top of the foundation beam (10), the bottom end of the limiting rod (21) is abutted with the foundation (1);
In the step S2, after the protection plate (2) is paved on the foundation beam (10), filling soil on two opposite sides of the foundation beam (10) and tamping to form a guiding slope (3);
in the step S2, after the construction of the guide slope (3) is completed, paving a plurality of support plates (4) on the surface of the guide slope (3);
main ear plates (23) are arranged on two opposite side edges of the protection plate (2); an auxiliary ear plate (41) is arranged on one side of the supporting plate (4);
In the step S2, when the supporting plates (4) are paved, the supporting plates (4) on the guiding slope (3) are made to be opposite to the protecting plates (2) on the foundation beam (10) one by one, and the auxiliary lug plates (41) on the side edges of the supporting plates (4) are connected to the main lug plates (23) on the side edges of the protecting plates (2) through bolts.
2. The method for quickly tamping the large-thickness atrial backfill according to claim 1, which is characterized in that: the limiting part further comprises a reinforcing rod (22), a plurality of limiting rods (21) on the same limiting part are welded and fixed with the reinforcing rods (22), the reinforcing rods (22) on the two groups of limiting parts are oppositely arranged, and flexible plates (221) are connected to opposite sides of the reinforcing rods (22) on the two groups of limiting parts.
3. The method for quickly tamping the large-thickness atrial backfill according to claim 2, which is characterized in that: the upper surface of the protection plate (2) is provided with a plurality of threaded holes (24);
In step S4, when the protection plate (2) is dismounted, the eye bolt is screwed in the threaded hole (24); and the eye bolts are connected with a lifting appliance of a crane, and the protection plate (2) is lifted off the top of the foundation beam (10) through the crane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311317922.0A CN117230775B (en) | 2023-10-11 | 2023-10-11 | Construction method for quickly tamping large-thickness atrial backfill soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311317922.0A CN117230775B (en) | 2023-10-11 | 2023-10-11 | Construction method for quickly tamping large-thickness atrial backfill soil |
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| CN117230775B true CN117230775B (en) | 2024-06-04 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1502717A1 (en) * | 1986-12-10 | 1989-08-23 | Предприятие П/Я Р-6043 | Method of constructing foundation in tamped-out pit |
| CN102477745A (en) * | 2010-11-28 | 2012-05-30 | 中建七局第四建筑有限公司 | Split construction method of beam slab structure |
| CN217899216U (en) * | 2022-08-03 | 2022-11-25 | 杭州市富阳区水利水电工程质量安全服务保障中心 | Hydraulic engineering construction safety device |
-
2023
- 2023-10-11 CN CN202311317922.0A patent/CN117230775B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1502717A1 (en) * | 1986-12-10 | 1989-08-23 | Предприятие П/Я Р-6043 | Method of constructing foundation in tamped-out pit |
| CN102477745A (en) * | 2010-11-28 | 2012-05-30 | 中建七局第四建筑有限公司 | Split construction method of beam slab structure |
| CN217899216U (en) * | 2022-08-03 | 2022-11-25 | 杭州市富阳区水利水电工程质量安全服务保障中心 | Hydraulic engineering construction safety device |
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| Publication number | Publication date |
|---|---|
| CN117230775A (en) | 2023-12-15 |
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