CN213742438U - Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area - Google Patents
Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area Download PDFInfo
- Publication number
- CN213742438U CN213742438U CN202022395704.7U CN202022395704U CN213742438U CN 213742438 U CN213742438 U CN 213742438U CN 202022395704 U CN202022395704 U CN 202022395704U CN 213742438 U CN213742438 U CN 213742438U
- Authority
- CN
- China
- Prior art keywords
- blasting
- foundation pit
- protective cover
- cover plate
- steel plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
A movable protective cover plate for blasting deep and large foundation pits of subway stations in dense areas of buildings covers an opening at the top of the foundation pit and is connected with a supporting beam bolt at the top of the foundation pit, and comprises a thick steel plate, I-shaped steel and reinforcing ribs, wherein a plurality of I-shaped steel arranged in parallel are fixedly connected to two sides and the middle of the top surface of the thick steel plate respectively, and a plurality of reinforcing ribs are symmetrically and fixedly connected to the top surface of the thick steel plate; and a plurality of hanging rings are symmetrically and fixedly connected to the I-shaped steel on the two sides of the top surface of the thick steel plate. The protective cover plate fully utilizes the foundation pit concrete supporting beam structure as a support, completely covers the foundation pit, cancels protection outside the foundation pit, greatly reduces space occupation, can move along with the change of a blasting area, has the repeated utilization rate as high as 100 percent, greatly saves material investment, realizes full sealing of the foundation pit of the blasting area, fundamentally ensures safety, can properly increase the blasting square quantity under tight protection, and completely realizes land conservation, material conservation, energy conservation, safety and environmental protection.
Description
Technical Field
The utility model relates to a blasting construction technical field specifically is a building intensive area subway station deep and large foundation ditch blasting is with portable protection apron.
Background
At present, taking the construction of a subway terminal station as an example, the total length of the station is 710m, the width of a foundation pit is 20.2-25.8 m, the excavation depth of the foundation pit is 17.6-21.5 m, and the construction is carried out by adopting an open excavation smoothing method for an underground two-layer open-cut island type station. The peripheral building of station is intensive, and the foundation ditch is close to the building, and wherein station north side building is 10.1 ~ 27.44m apart from the clear distance of foundation ditch, and station south side building is 5.16 ~ 10.55m apart from the clear distance of foundation ditch, and the building is mostly 80, 90 s villagers' house of building oneself, and the foundation structure type is poor, and most basis are shallow buried bar foundation, and the construction risk is high. The rock surface of a foundation pit at one end of the subway station is high, about 3-5 meters of underground enters the rock, the earthwork of the foundation pit of the main body of the station is about 27.7 ten thousand, wherein the medium-weathered sandstone and the slightly-weathered sandstone are about 11.5 ten thousand, the average value of the uniaxial saturated compressive strength of the actually-measured rock is 37MPa, and the construction period is 1645 days.
In the construction of a building dense area, a large amount of flying stones are generated in the blasting process of a deep foundation pit of a subway station, so that the safety of surrounding buildings and residents is seriously harmed, only blast holes are protected or a protective shed is arranged outside a fence in the conventional blasting process, the severity of blasting damage is neglected, a field outside a construction field is occupied, and space is seriously wasted, so that the flying stone damage is fundamentally solved, and the flying stones are controlled in the foundation pit.
This application uses the construction of above-mentioned subway station stone side blasting as the background to the rubble problem of splashing in the solution blasting construction.
Through published patent searches, the following comparison documents were found:
a detection tool for measuring the mounting straightness of a curb and a using method thereof (CN108195271A) disclose a detection tool for measuring the mounting straightness of the curb and a using method thereof, the detection tool comprises a first clamping piece and a second clamping piece, a rope is arranged between the first clamping piece and the second clamping piece, the first clamping piece and the second clamping piece comprise clamps, and the clamps are used for clamping two side faces of the curb. The invention mainly aims to solve the technical problems that the measurement efficiency is low and the occupied human resources are high due to the fact that manual stay wire measurement is adopted in the prior art.
Through the analysis, the detection instrument of the straight degree of smoothness of curb installation in above-mentioned patent that discloses all has great difference with the measurement calibration device in this application in structure and function, consequently does not influence the novelty of this application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a building intensive area subway station deep and large foundation ditch blasting is with portable protective cover plate, this protective cover plate simple structure, area are little, cover the foundation ditch blasting region, and the strict control flyrock can be removed according to construction area simultaneously, greatly increased blasting security, reduce cost for the construction progress.
A movable protective cover plate for blasting deep and large foundation pits of subway stations in dense areas of buildings covers an opening at the top of the foundation pit and is connected with a supporting beam bolt at the top of the foundation pit, and comprises a thick steel plate, I-shaped steel and reinforcing ribs, wherein a plurality of I-shaped steel arranged in parallel are fixedly connected to two sides and the middle of the top surface of the thick steel plate respectively, and a plurality of reinforcing ribs are symmetrically and fixedly connected to the top surface of the thick steel plate; and a plurality of hanging rings are symmetrically and fixedly connected to the I-shaped steel on the two sides of the top surface of the thick steel plate.
And the circumferential side wall of the reinforcing rib is welded and fixed with the top surface of the thick steel plate, and the two ends of the reinforcing rib are respectively welded and fixed with the side wall of the I-shaped steel.
And moreover, multiple groups of bolt connecting lugs are symmetrically and fixedly connected to the I-shaped steel on the two sides of the top surface of the thick steel plate, and each group of bolt connecting lugs correspond to the two ends of the reinforcing rib one to one respectively.
Moreover, the inner diameter of the hanging ring is phi 20 mm; the I-shaped steel is 16 #; the thickness of the thick steel plate is 3 mm; the diameter of the reinforcing rib is phi 25 mm.
The utility model has the advantages and the technical effect be:
the utility model discloses a building intensive area subway station is portable protective cover plate for deep and large foundation ditch blasting, covers the open-top of foundation ditch through thick steel plate, and the I-steel and the reinforcement bar of thick steel plate top surface are used for strengthening the structural strength of thick steel plate, avoid thick steel plate to produce deformation when hoist and mount and blast atress; wherein, two sides of the thick steel plate are fixedly connected with a plurality of groups of bolt connecting lugs which are used for being connected with a supporting beam bolt at the top of the foundation pit; a plurality of hanging rings are fixedly arranged on the I-shaped steel on two sides of the top surface of the thick steel plate above the sea and are used for hoisting and integrally transferring the protective cover plate.
The utility model discloses a building intensive area subway station is portable protective cover plate for blasting of deep and large foundation ditch, simple structure, area are little, cover the foundation ditch blasting region, and the strict control flyrock can be removed according to the construction region simultaneously, greatly increased blasting security, reduce cost for the construction progress is one kind and has higher creative portable protective cover plate for blasting of deep and large foundation ditch.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a schematic view of the connection of the present invention in the use state;
in the figure: 1-I-steel; 2-hoisting rings; 3-reinforcing ribs; 4-thick steel plate; 5-bolt connection lug; 6-a support beam; 7-foundation pit.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
A movable protective cover plate for blasting deep and large foundation pits of subway stations in dense areas of buildings is covered at an opening at the top of a foundation pit 7 and is in bolted connection with a supporting beam 6 at the top of the foundation pit, and comprises a thick steel plate 4, I-shaped steels 1 and reinforcing ribs 3, wherein a plurality of I-shaped steels arranged in parallel are fixedly connected to two sides and the middle of the top surface of the thick steel plate respectively, and a plurality of reinforcing ribs are symmetrically and fixedly connected to the top surface of the thick steel plate; and a plurality of lifting rings 2 are symmetrically and fixedly connected to the I-shaped steel on two sides of the top surface of the thick steel plate.
And the circumferential side wall of the reinforcing rib is welded and fixed with the top surface of the thick steel plate, and the two ends of the reinforcing rib are respectively welded and fixed with the side wall of the I-shaped steel.
And moreover, multiple groups of bolt connecting lugs 5 are symmetrically and fixedly connected to the I-shaped steel on the two sides of the top surface of the thick steel plate, and each group of bolt connecting lugs correspond to the two ends of the reinforcing rib one to one respectively.
Moreover, the inner diameter of the hanging ring is phi 20 mm; the I-shaped steel is 16 #; the thickness of the thick steel plate is 3 mm; the diameter of the reinforcing rib is phi 25 mm.
To more clearly illustrate the embodiments of the present invention, an example is provided below:
the utility model discloses a building intensive area subway station deep and large foundation ditch blasting is with portable protective cover plate to it is big to solve current building intensive area blasting protector occupation space, and is with high costs, and the security is low, complex operation's problem.
Furthermore, the steel plate is composed of I-shaped steel and thick steel plates, wherein the thick steel plates are selected to be 6m multiplied by 1.5m multiplied by 3mm, 16# I-shaped steel is adopted, and the distance is 3 m.
Furthermore, a thick steel plate is welded with I-shaped steel, the protective cover plate is processed into a single frame, the size of the protective frame is 6 x 9m or 6 x 12m, and 4 lifting rings are arranged on the protective frame.
Furthermore, the movable simple steel cover plate is hoisted to the support beam in the blasting area after being manufactured, and the blasting area is protected.
Further, after blasting in the area is completed, the movable simple steel cover plate is moved by using hoisting equipment such as a conventional gantry crane and the like, and is hoisted to the next blasting area.
As shown in fig. 1, the utility model provides a building intensive area subway station deep and large foundation ditch blasting movable simple and easy steel deck protector, include: designing and manufacturing the steel cover plate, using materials and the like.
The simple steel cover plate comprises the following steps:
a concrete support beam at the upper part of a foundation pit is utilized, a movable protective frame made of I-shaped steel and having the thickness of 6m multiplied by 1.5m multiplied by 3mm is erected on the concrete support beam, 16# I-shaped steel is adopted, the space is 3m, the thick steel plate and the I-shaped steel are welded, the protective frame is processed into a single frame, and the size of the protective frame is 6 x 9m or 6 x 12 m.
The blasting surface is dynamic, the steel protective frame needs to be moved frequently, 4 lifting rings are arranged on one protective frame, the lifting rings are made of phi 20 steel bars, the lifting rings and the I-steel are welded through double-side welding, and the length of a welding line is not less than 20 cm.
In order to realize safe hoisting, the steel protection frame needs to be reinforced, namely 3 transverse connecting ribs are arranged on 1 protection frame, wherein the upper connecting rib and the lower connecting rib are respectively arranged at the positions of the hoisting rings, the connecting ribs adopt phi 25 steel bars, and the steel bars and the double sides of the I-shaped steel bars are welded.
After blasting in a certain area is finished, the steel cover plate is moved to the next blasting area by using the existing gantry crane or other hoisting equipment.
The utility model provides a building intensive area subway station deep and large foundation ditch blasting movable simple and easy steel deck protector, which comprises a design, preparation and use, its make full use of foundation ditch concrete supporting beam structure is as supporting, the comprehensive closing cap foundation ditch, the protection beyond the cancellation foundation ditch, the space that has significantly reduced occupies, and it can remove along with blasting regional change, but reuse rate is up to 100%, the material input has been saved greatly, totally closed is realized to blasting regional foundation ditch simultaneously, fundamentally has guaranteed safety, under tight protection, the square volume of blasting also can suitably increase, the festival ground has been realized completely, save material, energy-conservation, safety and environmental protection.
In addition, the utility model discloses a not to describe all adopt the ripe product among the prior art and the ripe technical means among the prior art.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (4)
1. The utility model provides a building intensive area subway station deep and large foundation ditch blasting is with portable protective cover plate which characterized in that: the protective cover plate covers an opening at the top of the foundation pit and is connected with a supporting beam at the top of the foundation pit through a bolt, and the protective cover plate comprises a thick steel plate, I-shaped steel and reinforcing ribs, wherein a plurality of I-shaped steel arranged in parallel are fixedly connected to two sides and the middle of the top surface of the thick steel plate respectively, and a plurality of reinforcing ribs are symmetrically and fixedly connected to the top surface of the thick steel plate; and a plurality of lifting rings are symmetrically and fixedly connected to the I-shaped steel on two sides of the top surface of the thick steel plate.
2. The movable protective cover plate for blasting the deep and large foundation pits of the subway station in the building dense area as claimed in claim 1, wherein: the circumferential side wall of the reinforcing rib is welded and fixed with the top surface of the thick steel plate, and the two ends of the reinforcing rib are respectively welded and fixed with the side wall of the I-shaped steel.
3. The movable protective cover plate for blasting the deep and large foundation pits of the subway station in the building dense area as claimed in claim 1, wherein: and multiple groups of bolt connection lugs are symmetrically and fixedly connected to the I-shaped steel on two sides of the top surface of the thick steel plate, and each group of bolt connection lugs correspond to two ends of the reinforcing rib one to one respectively.
4. The movable protective cover plate for blasting the deep and large foundation pits of the subway station in the building dense area as claimed in claim 1, wherein: the inner diameter of the lifting ring is phi 20 mm; the type of the I-shaped steel is 16 #; the thickness of the thick steel plate is 3 mm; the diameter of the reinforcing rib is phi 25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395704.7U CN213742438U (en) | 2020-10-26 | 2020-10-26 | Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395704.7U CN213742438U (en) | 2020-10-26 | 2020-10-26 | Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213742438U true CN213742438U (en) | 2021-07-20 |
Family
ID=76852719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022395704.7U Active CN213742438U (en) | 2020-10-26 | 2020-10-26 | Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213742438U (en) |
-
2020
- 2020-10-26 CN CN202022395704.7U patent/CN213742438U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208685703U (en) | A kind of prefabricated armored concrete water intaking header structure | |
| CN112854228A (en) | Confined space foundation pit earth excavation construction method | |
| CN111411992A (en) | Integrated structure system penetrating through giant karst cave and construction method thereof | |
| CN213742438U (en) | Movable protective cover plate for blasting deep and large foundation pit of subway station in building dense area | |
| CN111535246B (en) | Construction method of wave-gathering breakwater facing structure poured by pouring mold | |
| CN212982283U (en) | Device for feeding rigid landfill and temporarily covering plate of unit pool | |
| CN219772893U (en) | Hydraulic engineering hydrophobic structure | |
| CN102767187A (en) | Reverse construction method for pebble foundation swirling well | |
| CN205954712U (en) | A quality detection device for holing construction of bored concrete pile pore -forming | |
| CN108547286A (en) | A kind of prefabricated guide groove structure of concrete cut and guide groove installation method | |
| CN208455615U (en) | A kind of prefabricated guide groove structure of concrete cut | |
| CN213038444U (en) | Temporary device for screening sludge in river channel culvert | |
| CN208633067U (en) | A kind of large size river sill may bulkhead gate | |
| CN206233254U (en) | A kind of underground captation | |
| CN208361754U (en) | A kind of derrick crane base steel plinth suspension mounting structure | |
| CN208618433U (en) | Basement water collection pit underwater construction steel form | |
| CN209144964U (en) | A kind of efficient rainwater isolation collection device | |
| CN109371961B (en) | Steel pipe column for subway station and construction process thereof | |
| CN108483284B (en) | A kind of derrick crane base steel plinth suspension installation method | |
| CN211470688U (en) | Protection device for shaft expanding excavation construction operation platform | |
| CN102852063B (en) | concrete block and construction method for road construction | |
| CN105804087A (en) | Installation method for steel structure below large deep foundation pit supporting beam | |
| CN212248138U (en) | Water conservancy water and electricity water inlet arrangement structure | |
| CN218148528U (en) | Simple and easy mounting tool of basement outer wall post-cast strip closed precast concrete board | |
| CN218990980U (en) | Safety protection canopy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |