CN204940303U - A kind of large rigidity foundation pit supporting pile - Google Patents
A kind of large rigidity foundation pit supporting pile Download PDFInfo
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- CN204940303U CN204940303U CN201520659164.5U CN201520659164U CN204940303U CN 204940303 U CN204940303 U CN 204940303U CN 201520659164 U CN201520659164 U CN 201520659164U CN 204940303 U CN204940303 U CN 204940303U
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Abstract
A kind of large rigidity foundation pit supporting pile, main body is the rectangular castinplace pile of cross section, and the length of rectangle is greater than width, and the length direction vertical foundation pit limit wall of pile body.Keep off native requirement according to foundation pit enclosure structure bending resistance and local, the two ends of main body 1 can be set up and meet the reinforcement edge of a wing, hole or/and meet soil to strengthen the edge of a wing, form T-shaped castinplace pile or I-shaped castinplace pile.The utility model can obtain the second moment of area enlarged markedly than circular cross-section, thus can obtain the bending rigidity significantly improved than traditional round stake, significantly improving of soil-baffling structure rigidity, is conducive to the distortion controlling support system, protection foundation ditch surrounding enviroment.Section form of the present utility model is conducive to the performance of section material supporting capacity, improves the bending bearing capacity in cross section, saves material, reduces construction costs.
Description
Technical field
The utility model relates to a kind of foundation pit supporting pile, the foundation pit supporting pile that particularly a kind of bending rigidity is larger.
Background technology
In base pit engineering, the rigidity of space enclosing structure and supporting capacity are the key factors of restriction supporting structure system supporting performance, are therefore also the key factors affecting construction costs.The bending rigidity increasing space enclosing structure can reduce the distortion of support system, reduces the setting of support anchor component, convenient construction, saves material, the reduction of erection time etc.
According to the calculating of second moment of area, section material arranges that distance cross section main shaft is far away, and second moment of area is larger, and the bending rigidity in cross section is larger, and the anti-bending bearing capacity of equal conditions lower section is also higher.As for the circular cross-section of same section area and square-section, square-section moment of inertia is along its length greater than circular cross-section.Under equal section area condition, square-section moment of inertia along its length and the ratio of circular cross-section moment of inertia, proportional with square-section aspect ratio, therefore can by the moment of inertia of the aspect ratio acquisition of adjustment square-section times over circular cross-section, also namely for same material, same section area, square-section can obtain the bending rigidity times over circular cross-section.But in base pit engineering practice at present, be limited by pore-forming equipment and pore-forming technique, in campshed supporting foundation pit engineering, the cross section of castinplace pile is generally circular.In conventional on-site pore-creating filling pile, for convenience of construction, sectional reinforcement is many along circular cross-section girth uniform reinforcement, and part reinforcing bar effectively can not be played a role in the bending resistance of cross section, causes waste.
Utility model content
The purpose of this utility model is to provide a kind of large rigidity foundation pit supporting pile, solve in base pit engineering, and the cast-in-place pile with round cross-sec tion bending rigidity as soil-baffling structure is not high, the technical problem of the defects such as sectional reinforcement waste.
For achieving the above object, the utility model adopts following technical scheme:
A kind of large rigidity foundation pit supporting pile, along foundation ditch periphery, the main body of described large rigidity foundation pit supporting pile is the rectangular castinplace pile of cross section, the height of rectangle is greater than width, and the short transverse vertical foundation pit limit wall of pile body, the reinforcing bar of described large rigidity foundation pit supporting pile by along spaced apart main body Ying Keng side, body width direction reinforcing bar, main body meets native side reinforcing bar, along body height direction, spaced apart main-body structure muscle and main body stirrup form.
The Ying Keng side of described main body can be set up and meet the reinforcement edge of a wing, hole, and both form T-shaped castinplace pile, and T-shaped castinplace pile, along foundation ditch periphery, is met the reinforcement edge of a wing, hole and overlapped with foundation ditch limit wall, body normal foundation ditch limit wall.
The Ying Keng side of described main body and meet native side and can set up respectively and meet hole and strengthen the edge of a wing and meet soil strengthening the edge of a wing, three forms I-shaped castinplace pile, and I-shaped castinplace pile, along foundation ditch periphery, is met hole and strengthened the edge of a wing and overlap with foundation ditch limit wall, body normal foundation ditch limit wall.
The depth of section of T-shaped castinplace pile is greater than the width of its main body.
The described width of cheating the reinforcement edge of a wing of meeting is identical or different with the width of meeting the soil reinforcement edge of a wing, and the depth of section of I-shaped castinplace pile is greater than the width of its main body.
The described reinforcing bar of strengthening the edge of a wing in hole of meeting is strengthened the edge of a wing and is indulged muscle and meet hole by along the spaced apart hole of meeting of edge of a wing length direction and strengthen edge of a wing stirrup and form.
Describedly meet soil to strengthen the reinforcing bar on the edge of a wing be strengthen the edge of a wing and indulge muscle and meet soil by along the spaced apart soil of meeting of edge of a wing length direction and strengthen edge of a wing stirrup and form.
Compared with prior art the utility model has following characteristics and beneficial effect:
A kind of large rigidity foundation pit supporting pile of the present utility model, as the soil-baffling structure of base pit engineering, compared with traditional round tee section pattern foundation pit supporting structure castinplace pile, larger bending rigidity and anti-bending bearing capacity can be obtained, under equal section area condition, can by the aspect ratio of main body in adjustment square-section, in T section main body depth-width ratio and meet hole and strengthen the physical dimension on the edge of a wing, in I-shaped cross-section main body depth-width ratio and meet hole and strengthen the physical dimension on the edge of a wing, the second moment of area being several times as much as circular cross-section can be obtained, thus the bending rigidity being several times as much as traditional round stake can be obtained, significantly improving of soil-baffling structure rigidity, the distortion of support system will be reduced, be conducive to protecting surrounding enviroment, simultaneously, section form is conducive to the performance of Reinforcement, improve the bending bearing capacity in cross section, also obtain larger effective depth of section and tension indulges muscle distributed area, Reinforcement is intensively arranged in the pressure zone away from cross section main shaft and tensile region, be beneficial to reinforcement property to play, saving steel, reduce construction costs.
Large rigidity foundation pit supporting pile of the present utility model is as the soil-baffling structure of base pit engineering, compared with the stake of traditional round tee section, when needing to obtain identical rigidity of section, the section area of square-section castinplace pile, T section castinplace pile and I-shaped cross-section castinplace pile can be much little, thus significantly save concrete material, reduce construction costs.
Large rigidity foundation pit supporting pile of the present utility model is under same support system Deformation control requirement condition, significantly improving of space enclosing structure rigidity, support stiffness can be reduced, increase support level spacing, increase and support vertical spacing, even can reduce support number of channels, thus material, convenient construction, reduction of erection time can be saved and reduce construction costs etc.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is the structural representation of rectangle cast-in-plase pile of the present utility model.
Fig. 2 is the structural representation of T-shaped cast-in-plase pile of the present utility model.
Fig. 3 is the structural representation of I-shaped cast-in-plase pile of the present utility model.
Reference numeral: 1-main body, 2-main body Ying Keng side reinforcing bar, 3-main body meet native side reinforcing bar, 4-main body stirrup, 5-main-body structure muscle, 6-meet that the edge of a wing is strengthened in hole, 7-meets that hole strengthens that muscle is indulged on the edge of a wing, 8-meets that edge of a wing stirrup is strengthened in hole, 9-meets that soil strengthens the edge of a wing, 10-meets soil and strengthens that muscle is indulged on the edge of a wing, 11-meets soil and strengthens edge of a wing stirrup.
Detailed description of the invention
Embodiment one is shown in Figure 1, a kind of large rigidity foundation pit supporting pile, in figure, A side is Ying Keng side, B side is for meeting native side, along foundation ditch periphery, the main body 1 of described large rigidity foundation pit supporting pile is the rectangular castinplace pile of cross section, and the length of rectangle is greater than width, and the length direction vertical foundation pit limit wall of pile body, forms the gear fortifield village protection structure of foundation pit supporting system.
Arrangement of reinforcement is undertaken by the rectangular cross section beam under the endogenetic process such as moment of flexure, shearing according to foundation pit supporting construction Force Calculation, by meeting native side reinforcing bar 3, main body stirrup 4 along spaced apart main body Ying Keng side, body width direction reinforcing bar 2 and main body and spaced apart main-body structure muscle 5 forms along principal length direction.
Embodiment two is shown in Figure 2, and to have additional unlike, the Ying Keng side of described main body 1 with embodiment one and meets hole and strengthen the edge of a wing 6, both form T-shaped castinplace pile.T-shaped castinplace pile is along foundation ditch periphery, and meet the reinforcement edge of a wing, hole and overlap with foundation ditch limit wall, body normal foundation ditch limit wall, forms the gear fortifield village protection structure of foundation pit supporting system.The depth of section of T-shaped cast-in-plase pile is greater than the width of its main body.
Arrangement of reinforcement is undertaken by the T section beam under the endogenetic process such as moment of flexure, shearing according to foundation pit supporting construction Force Calculation, the described reinforcing bar of strengthening the edge of a wing 6 in hole of meeting is strengthened the edge of a wing and is indulged muscle 7 and meet hole by along the spaced apart hole of meeting of edge of a wing length direction and strengthen edge of a wing stirrup 8 and form, and meets hole and strengthens the edge of a wing and indulge muscle and comprise longitudinal stress muscle and longitudinal structure muscle.
Embodiment three is shown in Figure 3, and with embodiment two unlike the Ying Keng side of, described main body 1 with meet native side and have additional respectively and meet hole and strengthen the edge of a wing 6 and meet soil strengthening the edge of a wing 9, three forms I-shaped castinplace pile.I-shaped castinplace pile is along foundation ditch periphery, and meet the reinforcement edge of a wing, hole and overlap with foundation ditch limit wall, body normal foundation ditch limit wall, forms the gear fortifield village protection structure of foundation pit supporting system.The described width of cheating the reinforcement edge of a wing 6 of meeting is identical or different with the width of meeting the soil reinforcement edge of a wing 9, and the depth of section of I-shaped castinplace pile is greater than the width of its main body.
Arrangement of reinforcement is undertaken by the I-shaped cross-section beam under the endogenetic process such as moment of flexure, shearing according to foundation pit supporting construction Force Calculation.Except the reinforcement placement on the edge of a wing 6 is strengthened in above-mentioned hole of meeting, meet reinforcing bar that soil strengthens the edge of a wing 9 and comprise and meet soil and strengthen the edge of a wing and indulge muscle 10 and meet soil and strengthen edge of a wing stirrup 11 and form, meet soil and strengthen the edge of a wing and indulge muscle and comprise longitudinal stress muscle and longitudinal structure muscle.
Work progress of the present utility model is as follows:
Step one, considers feature and the designing requirement of base pit engineering, enters foundation pit supporting system computational analysis, determine the relevant parameter of space enclosing structure, comprise material rate, cross section geometric parameter, space length between supporting piles etc.In cross section geometric parameter, length and the width of determining main body are needed for square-section castinplace pile; T section castinplace pile need to determine cross section overall height, meet hole and strengthen the width on the edge of a wing and the width of thickness and main body; I-shaped cross-section castinplace pile need to determine cross section overall height, meet hole strengthen the edge of a wing width and thickness, meet soil and strengthen the width on the edge of a wing and the width of thickness and main body.
Step 2, on-the-spot assembling reinforcement cage.According to designing requirement, the reinforcing cage of on-the-spot colligation castinplace pile, when adopting rectangular filling pile, reinforcing cage is rectangle; When adopting T-shaped castinplace pile, reinforcing cage is T-shaped; When adopting I-shaped castinplace pile, reinforcing cage is I-shaped.
Step 3, the on-the-spot levelling of the land of base pit engineering, according to the cross section castinplace pile form selected and pile spacing, carry out drilling construction, stake holes needs mud off or sleeve pipe retaining wall.When adopting rectangular filling pile, need into the rectangular opening adapted with castinplace pile sectional dimension; When adopting T-shaped cast-in-plase pile, need into the T-shaped hole adapted with castinplace pile sectional dimension; When adopting I-shaped cast-in-plase pile, need into the I-shaped hole adapted with castinplace pile sectional dimension.
Step 4, install reinforcing cage.Reinforcing cage good for colligation is hung in the stake holes as correspondence.
Step 5, concrete perfusion pile.
Step 6, along foundation ditch periphery successively pore-forming, install reinforcing cage, concrete perfusion pile.Form the space enclosing structure of base pit engineering.
Claims (7)
1. a large rigidity foundation pit supporting pile, along foundation ditch periphery, it is characterized in that: the main body (1) of described large rigidity foundation pit supporting pile is the rectangular castinplace pile of cross section, the height of rectangle is greater than width, and the short transverse vertical foundation pit limit wall of pile body, the reinforcing bar of described large rigidity foundation pit supporting pile by along spaced apart main body Ying Keng side reinforcing bar, body width direction (2), main body meets native side reinforcing bar (3), along body height direction, spaced apart main-body structure muscle (5) and main body stirrup (4) form.
2. large rigidity foundation pit supporting pile according to claim 1, it is characterized in that: the Ying Keng side of described main body (1) can be set up and meet the hole reinforcement edge of a wing (6), both composition T-shaped castinplace piles, T-shaped castinplace pile is along foundation ditch periphery, meet the reinforcement edge of a wing, hole to overlap with foundation ditch limit wall, body normal foundation ditch limit wall.
3. large rigidity foundation pit supporting pile according to claim 1, it is characterized in that: the Ying Keng side of described main body (1) and meet native side and can set up respectively and meet hole and strengthen the edge of a wing (6) and meet the soil reinforcement edge of a wing (9), three forms I-shaped castinplace pile, I-shaped castinplace pile is along foundation ditch periphery, meet the reinforcement edge of a wing, hole to overlap with foundation ditch limit wall, body normal foundation ditch limit wall.
4. large rigidity foundation pit supporting pile according to claim 2, is characterized in that: the depth of section of T-shaped castinplace pile is greater than the width of its main body.
5. large rigidity foundation pit supporting pile according to claim 3, is characterized in that: described in meet hole strengthen the edge of a wing (6) width and meet soil strengthen the edge of a wing (9) width identical or different, the depth of section of I-shaped castinplace pile is greater than the width of its main body.
6. the large rigidity foundation pit supporting pile according to Claims 2 or 3, is characterized in that: described in meet hole strengthen the edge of a wing (6) reinforcing bar by along edge of a wing length direction spaced apart meet hole strengthen the edge of a wing indulge muscle (7) and meet hole strengthen edge of a wing stirrup (8) form.
7. large rigidity foundation pit supporting pile according to claim 3, is characterized in that: described in meet soil strengthen the edge of a wing (9) reinforcing bar be by along edge of a wing length direction spaced apart meet soil strengthen the edge of a wing indulge muscle (10) and meet soil strengthen edge of a wing stirrup (11) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520659164.5U CN204940303U (en) | 2015-08-28 | 2015-08-28 | A kind of large rigidity foundation pit supporting pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520659164.5U CN204940303U (en) | 2015-08-28 | 2015-08-28 | A kind of large rigidity foundation pit supporting pile |
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| Publication Number | Publication Date |
|---|---|
| CN204940303U true CN204940303U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520659164.5U Expired - Fee Related CN204940303U (en) | 2015-08-28 | 2015-08-28 | A kind of large rigidity foundation pit supporting pile |
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| Country | Link |
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| CN (1) | CN204940303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836210A (en) * | 2017-03-14 | 2017-06-13 | 广西桥通工程设计有限公司 | 8-shaped stake with the edge of a wing |
| CN108330990A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of Z-type foundation pit supporting pile and its connection structure |
-
2015
- 2015-08-28 CN CN201520659164.5U patent/CN204940303U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836210A (en) * | 2017-03-14 | 2017-06-13 | 广西桥通工程设计有限公司 | 8-shaped stake with the edge of a wing |
| CN108330990A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of Z-type foundation pit supporting pile and its connection structure |
| CN108330990B (en) * | 2018-04-17 | 2024-02-20 | 安徽省建筑科学研究设计院 | Z-shaped foundation pit supporting pile and connecting structure thereof |
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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: 20160106 Termination date: 20200828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |