CN203034462U - A steel truss support structure for a ground pit of underground space - Google Patents
A steel truss support structure for a ground pit of underground space Download PDFInfo
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- CN203034462U CN203034462U CN 201220665700 CN201220665700U CN203034462U CN 203034462 U CN203034462 U CN 203034462U CN 201220665700 CN201220665700 CN 201220665700 CN 201220665700 U CN201220665700 U CN 201220665700U CN 203034462 U CN203034462 U CN 203034462U
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Abstract
The utility model provides a steel truss support structure for a ground pit of underground space and belongs to the field of geotechnical engineering. The steel truss support structure is characterized in that a steel sheet pile used for both soil blockage and water stop of the foundation pit is disposed on the foundation pit; a first H-shaped steel and a second H-shaped steel are disposed successively on one side of the steel sheet pile for soil blockage of the foundation pit; the steel sheet pile is connected with the first H-shaped steel through a truss structure; and the first H-shaped steel is connected with the second H-shaped steel through a truss structure. The steel truss support structure is of great structural strength, has the functions of both soil blockage and water stop, can be reused, requires no arrangement of inner support and is suitable for pits with relatively high cutting depth and large area.
Description
Technical field
The utility model relates to a kind of underground space steel truss foundation pit supporting construction, belongs to the geotechnical engineering technical field.
Background technology
Excavation of foundation pit is dark, when area is big, often adopt stake to support or the double-row pile Foundation Pit in adding.It is Foundation Pit that stake adds inner supporting body, and soldier pile stake top arranges collar tie beam, and integral rigidity is good, and system uses in conjunction with inner supporting body, and the control deformability is better.But this kind supporting type construction period is long, and construction costs is high and be unfavorable for soil excavation.
The Double-row Piles Support pattern refers to arrange the parallel stake of two rows in foundation soil, rectangular or the quincuncial arrangement of front and back two campshed pile bodies, very useful rigidity Guan Liang connects at two campsheds, along hole wall parallel direction, form door figure space structure, this structure has bigger lateral rigidity, can effectively limit foundation pit deformation.Generally speaking, two row's soldier piles are cantilevered, have bigger construction space, and it is convenient to cut the earth.This supporting type is applicable to that cutting depth is no more than the foundation ditch of 9m, but this pattern only relies on the stake top to connect, and can not give full play to the effect of back campshed.
H shaped steel is that a kind of section area distribution ratio is optimized, the efficient section bar of the rational economic section of the ratio of strength to weight, because of its section and identical the gaining the name of English alphabet " H ".Owing to all arrange with the right angle in each position of H shaped steel, so H shaped steel all has on all directions, and bending resistance is strong, construction is simple, save advantages such as cost and lightweight construction, is mainly used in the stake of SMW worker's method in the base pit engineering at present.H shaped steel itself does not have snap close, is used for base pit engineering and only can keeps off soil, can not sealing.
Summary of the invention
The utility model purpose provide a kind of rigidity of structure big, have retaining native sealing function, reusable edible concurrently, do not need that inner support is set, be applicable to the underground space steel truss foundation pit supporting construction of the foundation ditch that the dark area of cutting depth is big.
A kind of underground space steel truss foundation pit supporting construction, the steel sheet pile that is used for foundation ditch retaining soil, sealing simultaneously is set on the foundation ditch, the same side of steel sheet pile is arranged a H shaped steel, the 2nd H shaped steel for foundation ditch retaining soil successively, be connected by trussed construction between steel sheet pile and the H shaped steel, be connected by trussed construction between a H shaped steel and the 2nd H shaped steel.
Trussed construction of the present utility model comprises that steel corbel, steel enclose purlin, steel coupling beam, and the two ends of steel coupling beam arrange that respectively steel encloses purlin, and steel encloses the joint portion of purlin and steel sheet pile, a H shaped steel, the 2nd H shaped steel and arranges steel corbel.
The upper end of the utility model steel sheet pile is connected by the steel connecting rod with the upper end of a H shaped steel, is connected by the steel connecting rod between the upper end of the upper end of a H shaped steel and the 2nd H shaped steel.
Job practices based on underground space steel truss foundation pit supporting construction comprises the steps:
The first step: determine that the model of steel sheet pile and stake are long; Model, the stake of determining a H shaped steel, the 2nd H shaped steel are long, determine the pile spacing between a H shaped steel, the 2nd H shaped steel;
Second step: at foundation ditch construct steel sheet pile, a H shaped steel, the 2nd H shaped steel;
The 3rd step: soil excavation to first floor encloses the end, purlin hole, sets up the first floor trussed construction between steel sheet pile, a H shaped steel;
The 4th step: soil excavation to the second layer encloses the end, purlin hole, sets up second layer trussed construction between steel sheet pile, the H shaped steel, sets up second layer trussed construction between a H shaped steel, the 2nd H shaped steel;
The 5th step: soil excavation to clearing up, flatten in the end, foundation ditch hole, is built bed course and base plate of foundation pit to a H shaped steel limit at the bottom of the foundation ditch, removes the connection between the 2nd H shaped steel and a H shaped steel, the 2nd H shaped steel simultaneously, the underground agent structure of constructing;
The 6th step: the backfill sidewall earthwork to the second layer encloses the end, purlin hole, removes second layer trussed construction;
The 7th step: the backfill sidewall earthwork to first floor encloses the end, purlin hole, removes the first floor trussed construction, extracts a H shaped steel;
The 8th step: backfill sidewall earthwork ground, remove steel sheet pile.
The utility model adopts technique scheme, compared with prior art has following advantage:
The underground space steel truss foundation pit supporting construction that the utility model provides, steel sheet pile has quick construction, and foundation pit construction finishes the back steel sheet pile can be pulled out, recycling, characteristics such as better economy.But because the anti-side rigidity of steel sheet pile is less relatively, be out of shape bigger.Having relatively high expectations and dig in surrounding enviroment should be less in the dark bigger base pit engineering.
Underground space steel truss foundation pit supporting construction has the native sealing function of retaining, space truss structure concurrently, and rigidity is big, is out of shape little, do not need to arrange interior support, it is convenient to cut the earth, reusable edible, be applicable to that the foundation ditch area is big, dig deep foundation ditch, can give full play to the advantage of steel sheet pile, H shaped steel.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the utility model at the construct schematic diagram of steel sheet pile, a H shaped steel, the 2nd H shaped steel of foundation ditch.
Fig. 3 is the schematic diagram that the utility model sets up the first floor trussed construction.
Fig. 4 is the schematic diagram that the utility model sets up second layer trussed construction.
Fig. 5 is the schematic diagram that the utility model was cleared up, flattened the end, foundation ditch hole.
Fig. 6 is the schematic diagram of the utility model construction foundation pit base plate.
Fig. 7 is the schematic diagram that the utility model is removed the 2nd H shaped steel.
Fig. 8 is the schematic diagram of the earthwork of the utility model backfill sidewall, the underground agent structure of construction.
Fig. 9 is the schematic diagram that the utility model is removed second layer trussed construction.
Figure 10 is the schematic diagram of the backfill sidewall earthwork between the utility model steel sheet pile, the H shaped steel.
Figure 11 is the schematic diagram that the utility model is removed the first floor trussed construction.
Figure 12 is the schematic diagram on the utility model backfill sidewall earthwork ground
Figure 13 is the schematic diagram that the utility model is removed steel sheet pile.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:
Shown in Fig. 1-13, a kind of underground space steel truss foundation pit supporting construction, it is characterized in that arranging on the foundation ditch steel sheet pile 1 that is used for foundation ditch retaining soil, sealing simultaneously, the same side of steel sheet pile 1 is arranged a H shaped steel 2, the 2nd H shaped steel 3 for foundation ditch retaining soil successively, be connected by trussed construction between steel sheet pile 1 and the H shaped steel 2, be connected by trussed construction between a H shaped steel 2 and the 2nd H shaped steel 3.
As shown in Figure 2, trussed construction of the present utility model comprises that steel corbel 4, steel enclose purlin 5, steel coupling beam 6, and the two ends of steel coupling beam 6 arrange that respectively steel encloses purlin 5, and steel encloses purlin 5 and arranges steel corbel 4 with the joint portion of steel sheet pile 1, a H shaped steel 2, the 2nd H shaped steel 3.
As shown in Figure 2, the upper end of the utility model steel sheet pile 1 is connected by steel connecting rod 7 with the upper end of a H shaped steel 2, is connected by steel connecting rod 7 between the upper end of the upper end of a H shaped steel 2 and the 2nd H shaped steel 3.
Shown in Fig. 2-13, the job practices based on the utility model underground space steel truss foundation pit supporting construction comprises the steps:
The first step: determine that the model of steel sheet pile 1 and stake are long; Model, the stake of determining a H shaped steel 2, the 2nd H shaped steel 3 are long, determine the pile spacing between a H shaped steel 2, the 2nd H shaped steel 3;
Second step: at foundation ditch construction steel sheet pile 1, a H shaped steel 2, the 2nd H shaped steel 3;
The 3rd step: soil excavation to first floor encloses the end, purlin hole, sets up the first floor trussed construction between steel sheet pile 1, a H shaped steel 2;
The 4th step: soil excavation to the second layer encloses the end, purlin hole, sets up second layer trussed construction between steel sheet pile 1, the H shaped steel 2, sets up second layer trussed construction between a H shaped steel 2, the 2nd H shaped steel 3;
The 5th step: soil excavation to clearing up, flatten in the end, foundation ditch hole, is built bed course and base plate of foundation pit to a H shaped steel 2 limits at the bottom of the foundation ditch, removes the connection between the 2nd H shaped steel 3 and a H shaped steel 2, the 2nd H shaped steel 3 simultaneously, the underground agent structure of constructing;
The 6th step: the backfill sidewall earthwork to the second layer encloses the end, purlin hole, removes second layer trussed construction;
The 7th step: the backfill sidewall earthwork to first floor encloses the end, purlin hole, removes the first floor trussed construction, extracts a H shaped steel 2;
The 8th step: backfill sidewall earthwork ground, remove steel sheet pile 1.
Shown in Fig. 2-13, the job practices of the utility model underground space steel truss foundation pit supporting construction comprises the steps:
The first step: determine that the model of steel sheet pile 1 and stake are long; Model, the stake of determining a H shaped steel 2, the 2nd H shaped steel 3 are long, determine the pile spacing between a H shaped steel 2, the 2nd H shaped steel 3;
Second step: at foundation ditch construction steel sheet pile 1, a H shaped steel 2, the 2nd H shaped steel 3;
The 3rd step: soil excavation to first floor encloses the end, purlin hole, sets up the first floor trussed construction between steel sheet pile 1, a H shaped steel 2, is connected steel connecting rod 7 between the upper end of the upper end of steel sheet pile 1 and a H shaped steel 2;
The 4th step: soil excavation to the second layer encloses the end, purlin hole, set up second layer trussed construction between steel sheet pile 1, the H shaped steel 2, set up second layer trussed construction between the one H shaped steel 2, the 2nd H shaped steel 3, be connected steel connecting rod 7 between the upper end of the upper end of a H shaped steel 2 and the 2nd H shaped steel 3;
The 5th step: soil excavation to clearing up, flatten in the end, foundation ditch hole, is built bed course and base plate of foundation pit to a H shaped steel 2 limits at the bottom of the foundation ditch, removes the connection between the 2nd H shaped steel 3 and a H shaped steel 2, the 2nd H shaped steel 3 simultaneously, the underground agent structure of constructing;
The 6th step: the backfill sidewall earthwork to the second layer encloses the end, purlin hole, removes second layer trussed construction;
The 7th step: the backfill sidewall earthwork to first floor encloses the end, purlin hole, removes the first floor trussed construction, extracts a H shaped steel 2;
The 8th step: backfill sidewall earthwork ground, remove steel sheet pile 1.
The underground space steel truss foundation pit supporting construction that the utility model is made up of row's steel sheet pile and two row H shaped steel, this supporting and protection structure has retaining soil, sealing function concurrently, front and back three campsheds are by the trussed construction co-operation, space truss structure rigidity is big, resistance capacity to deformation is strong, does not need to arrange interior support, and it is convenient to cut the earth, be applicable to that the foundation ditch area is big, dig deep foundation ditch.After basement construction was finished, steel work all can reclaim.
Claims (3)
1. underground space steel truss foundation pit supporting construction, it is characterized in that arranging on the foundation ditch steel sheet pile (1) that is used for foundation ditch retaining soil, sealing simultaneously, the same side of steel sheet pile (1) is arranged a H shaped steel (2), the 2nd H shaped steel (3) for foundation ditch retaining soil successively, be connected by trussed construction between steel sheet pile (1) and the H shaped steel (2), be connected by trussed construction between a H shaped steel (2) and the 2nd H shaped steel (3).
2. underground space steel truss foundation pit supporting construction according to claim 1, it is characterized in that above-mentioned trussed construction comprises that steel corbel (4), steel enclose purlin (5), steel coupling beam (6), the two ends of steel coupling beam (6) arrange that respectively steel encloses purlin (5), and steel encloses purlin (5) and arranges steel corbel (4) with the joint portion of steel sheet pile (1), a H shaped steel (2), the 2nd H shaped steel (3).
3. underground space steel truss foundation pit supporting construction according to claim 1, the upper end that it is characterized in that above-mentioned steel sheet pile (1) is connected by steel connecting rod (7) with the upper end of a H shaped steel (2), is connected by steel connecting rod (7) between the upper end of the upper end of a H shaped steel (2) and the 2nd H shaped steel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665700 CN203034462U (en) | 2012-12-06 | 2012-12-06 | A steel truss support structure for a ground pit of underground space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665700 CN203034462U (en) | 2012-12-06 | 2012-12-06 | A steel truss support structure for a ground pit of underground space |
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| CN203034462U true CN203034462U (en) | 2013-07-03 |
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| CN 201220665700 Expired - Fee Related CN203034462U (en) | 2012-12-06 | 2012-12-06 | A steel truss support structure for a ground pit of underground space |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995643A (en) * | 2012-12-06 | 2013-03-27 | 东南大学 | Underground-space steel truss foundation pit supporting structure and construction method thereof |
| CN105696603A (en) * | 2016-04-11 | 2016-06-22 | 中铁建大桥工程局集团第四工程有限公司 | Truss supporting and steel sheet pile supporting device and method for deep excavation of trenches |
-
2012
- 2012-12-06 CN CN 201220665700 patent/CN203034462U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995643A (en) * | 2012-12-06 | 2013-03-27 | 东南大学 | Underground-space steel truss foundation pit supporting structure and construction method thereof |
| CN102995643B (en) * | 2012-12-06 | 2015-04-08 | 东南大学 | Underground-space steel truss foundation pit supporting structure and construction method thereof |
| CN105696603A (en) * | 2016-04-11 | 2016-06-22 | 中铁建大桥工程局集团第四工程有限公司 | Truss supporting and steel sheet pile supporting device and method for deep excavation of trenches |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20161206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |