CN214883716U - Supporting structure for reinforcing foundation pit in loess area for overdue service - Google Patents
Supporting structure for reinforcing foundation pit in loess area for overdue service Download PDFInfo
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- CN214883716U CN214883716U CN202121470149.8U CN202121470149U CN214883716U CN 214883716 U CN214883716 U CN 214883716U CN 202121470149 U CN202121470149 U CN 202121470149U CN 214883716 U CN214883716 U CN 214883716U
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Abstract
The utility model provides a supporting construction for loess area is labour foundation ditch reinforcement in excess, including setting up a plurality of old fender piles in the foundation ditch, stretch-draw has a plurality of old anchor ropes on the old fender pile, is provided with a supporting beam on a plurality of old fender piles's the side, and the foundation ditch internal fixation has a plurality of new fender piles, and the degree of depth of new fender pile in the foundation ditch is greater than old fender pile, and the top of a plurality of new fender piles links together through guan liang, and a supporting beam is connected through a plurality of even roof beams with guan liang. The utility model discloses on the basis of original system of strutting, through newly setting up new fender pile to link together new fender pile and the old fender pile of original system of strutting, realized the reinforcement to the system of strutting of loess area overservice foundation ditch, guaranteed construction safety and efficiency of construction simultaneously, reduced construction cost.
Description
Technical Field
The utility model belongs to the technical field of excavation supporting design, construction, concretely relates to a supporting construction that is used for loess area to serve foundation ditch reinforcement in service for an extended period.
Background
In general, the service life of a designed foundation pit supporting structure is one year, but in the engineering construction process, the foundation pit supporting structure is easy to stop for more than one year after excavation and supporting of a foundation pit due to insufficient construction funds, dispute of contracts, non-compliance with laws and regulations, change of owner schemes and the like, so that the foundation pit supporting structure is in an overdue service state, the safety and the stability of the foundation pit supporting structure are greatly reduced, and great potential safety hazards are caused to adjacent buildings (structures), roads, pipelines and the like. After the project is restarted in the later period, if the depth of the foundation pit is deepened due to the fact that the scheme is changed, the old supporting system has the conditions that the embedding depth of supporting piles is not enough, and the length of anchor cables cannot meet the anchoring force, and needs to be reinforced by a new supporting system.
The common foundation pit support in loess areas mainly has the forms of soil nailing wall, pile anchor combined support and the like, the traditional reinforcement method mainly adopts the processes of rotary digging hole forming and the like to form piles at the excavation depth, the problem of soil emergence exists, the loose soil body between the new support pile and the old support pile needs to be subjected to rotary spraying reinforcement treatment, the construction period is prolonged, and the support cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to above-mentioned prior art provides a supporting construction that is used for loess area to be in service foundation ditch reinforcement in excess, and this supporting construction is through newly setting up new fender pile on the basis of original system of strutting to link together new fender pile and the old fender pile in the original system of strutting, realized the reinforcement to the system of strutting of loess area foundation ditch in excess service, guaranteed construction safety and efficiency of construction simultaneously, reduced construction cost.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a supporting construction for loess area is out of service foundation ditch reinforced (rfd) in service, a serial communication port, including setting up a plurality of old fender piles in the foundation ditch, stretch-draw has a plurality of old anchor ropes on the old fender pile, and is a plurality of be provided with a supporting beam on the side of old fender pile, the foundation ditch internal fixation has a plurality of new fender piles, just the degree of depth of new fender pile in the foundation ditch is greater than old fender pile, and is a plurality of the top of new fender pile links together through hat the roof beam, a supporting beam is connected through a plurality of even roof beams with hat the roof beam.
The supporting structure for reinforcing the foundation pit in the loess area in the out-of-service period is characterized in that the new supporting pile is a compacted bored pile.
Foretell a supporting construction for loess area is out of service foundation ditch reinforcement for term, its characterized in that, the up end and the foundation ditch parallel and level of new fender pile, a supporting beam with guan liang parallel and level.
Foretell a supporting construction for loess area overline foundation ditch reinforcement, its characterized in that, the last stretch-draw of new fender pile has a plurality of new anchor ropes.
The supporting structure for reinforcing the foundation pit in the loess area, which is in service for the long term, is characterized in that the new anchor cables are arranged at intervals of one or more new supporting piles.
Foretell a supporting construction for loess area is out of service foundation ditch reinforcement for term, its characterized in that, new fender pile sets up with old fender pile one-to-one, even roof beam with new fender pile one-to-one sets up.
Foretell a supporting construction for loess area is out of service foundation ditch reinforcement of stage, its characterized in that, the stake footpath of new fender pile is greater than the stake footpath of old fender pile.
Foretell a supporting construction for loess area is out of service foundation ditch reinforcement of stage, its characterized in that is a plurality of new fender pile and a plurality of old fender pile's interval equals.
Foretell a supporting construction for loess area is out of service foundation ditch reinforcement for term, its characterized in that, a plurality of the equidistant setting of new fender pile.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses on the basis of original system of strutting, through newly setting up new fender pile to link together new fender pile and the old fender pile of original system of strutting, realized the reinforcement to the system of strutting of loess area overservice foundation ditch, guaranteed construction safety and efficiency of construction simultaneously, reduced construction cost.
2. The utility model discloses an adopt crowded close pore-forming bored concrete pile as new fender pile, make the soil body between new fender pile and the old fender pile receive the crowded close effect of side direction, play the reinforcing action to the soil body, make the ground more firm, especially in collapsible loess district's processing, can effectively eliminate the collapsibility of large thickness loess, and simultaneously, crowded close pore-forming process need not excavate and backfill soil, crowded close pile machine equipment receives the place influence less for the equipment of digging soil, also can the reduction of erection time, reduce engineering cost, improve the efficiency of construction.
3. The utility model discloses a set up the up end and the foundation ditch parallel and level of new fender pile, a supporting beam and guan lian ping parallel and level make the foundation ditch baseplane realize pouring of even roof beam as supporting the template, need not new framework support template, practice thrift the time limit for a project, save material, and it is higher as supporting template stability with the foundation ditch baseplane, and then make supporting construction's overall stability higher.
4. The utility model discloses a stretch-draw a plurality of new anchor ropes on new fender pile, strengthened the joint strength of new fender pile and foundation ditch lateral wall soil body, form the effective support to new fender pile, reduce the side direction soil pressure that new fender pile received old fender pile, prevent that the end of inlaying of new fender pile bottom in the foundation ditch from taking place the problem that relative displacement arouses the bearing capacity to weaken, prevent that the old supporting construction of overlength labour from appearing the potential safety hazard, ensure the safety and stability of foundation ditch.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the supporting structure of the present invention.
Fig. 2 is a cross-sectional view at a-a in fig. 1.
Description of reference numerals:
1-old support piles; 2, foundation pit; 3, old anchor cables;
4, supporting the beam; 5, newly supporting piles; 6-a crown beam;
7-connecting the beam; 8, new anchor cable; 9-soil body;
10-ground plane; 11-foundation pit bottom plane.
Detailed Description
Example 1
As shown in fig. 1 and 2, the supporting construction for loess area is out of service foundation ditch reinforcement in term includes a plurality of old fender piles 1 that set up in foundation ditch 2 for this embodiment, the stretch-draw has a plurality of old anchor ropes 3 on old fender pile 1, and is a plurality of be provided with a supporting beam 4 on old fender pile 1's the side, foundation ditch 2 internal fixation has a plurality of new fender piles 5, just new fender pile 5 is greater than old fender pile 1, and is a plurality of the degree of depth of foundation ditch 2 is greater than new fender pile 5's top links together through hat roof beam 6, supporting beam 4 is connected through a plurality of even roof beams 7 with hat roof beam 6.
In the embodiment, the old supporting system comprises an old supporting pile 1 and an old anchor cable 3 stretched on the old supporting pile 1, a plurality of new supporting piles 5 are additionally arranged in a foundation pit 2, a supporting beam 4 is newly arranged on the old supporting piles 1, a crown beam 6 is arranged at the top end of the new supporting pile 5, the supporting beam 4 and the crown beam 6 are connected through a connecting beam 7, so that the connection between the old supporting pile 1 and the new supporting pile 5 is realized, wherein the newly arranged supporting beam 4 realizes the connection between the old supporting piles 1, provides support for the old supporting pile 1 in the horizontal direction, strengthens the resistance and the deformability of the old supporting pile 1 in the horizontal direction, the arranged crown beam 6 realizes the connection between the new supporting piles 5, restrains the top of the new supporting pile 5, strengthens the horizontal rigidity of the new supporting pile 5, connects the supporting beam 4 and the crown beam 6 through the connecting beam 7, realizes the connection between the old supporting system and the new supporting system, the new supporting system and the old supporting system are integrated, the integral rigidity and the cooperative deformation capability of the supporting structure are effectively increased, the bearing capacity of the supporting structure is enhanced, meanwhile, the new supporting pile 5 is additionally arranged on the basis of the old supporting system, and the reinforcement of the foundation pit supporting system in service for a long time is realized by connecting the new supporting pile 5 and the old supporting pile 1, so that the safety of the foundation pit is ensured, the engineering cost is reduced, and the waste of the original resources is avoided; the problem of insufficient bearing capacity of an original supporting system due to over-term service is solved by setting the depth of a new supporting pile 5 in a foundation pit 2 to be larger than that of an old supporting pile 1, the bearing capacity of the supporting system is improved by deepening the embedding depth of the new supporting pile 5, the stability of the new supporting pile 5 is improved, and the potential safety hazard problem to constructors is effectively avoided particularly for loess areas where soft soil layers are prone to collapse; the utility model discloses on the basis of original system of strutting, through newly-increased new fender pile 5 to link together new fender pile 5 and the old fender pile 1 of original system of strutting, realized the reinforcement to the system of strutting of loess area overservice foundation ditch, guaranteed construction safety nature and efficiency of construction simultaneously, just the utility model discloses increase new system of strutting on old system of strutting, original system of strutting does not do the change, and new supporting construction after consolidating not only the rigidity is strong, consolidates in original foundation ditch, still uses manpower sparingly and material resources cost, and the design transformation is reasonable.
As shown in fig. 1 and 2, optionally, in this embodiment, the new support piles 5 are compacted cast-in-place piles. In practical application, a compaction pile machine is adopted to laterally compact and form holes, then a reinforcement cage is placed to pour concrete to form a pile, the pile is the new supporting pile 5, and the compacted and formed hole pouring pile is adopted as the new supporting pile 5, on one hand, in the process of forming the compacted and formed hole pouring pile, a soil body 9 between the new supporting pile 5 and the old supporting pile 1 is laterally compacted to reinforce the soil body 9, so that the foundation is firmer, and particularly, the collapsibility of large-thickness loess can be effectively eliminated in the treatment of collapsible yellow land areas; on the other hand, the compaction hole forming does not need to excavate and backfill soil, the compaction pile machine equipment is less affected by the field compared with the soil excavating equipment, the construction period can be shortened, the construction cost is reduced, and the construction efficiency is improved.
As shown in fig. 1 and 2, optionally, in this embodiment, the upper end surface of the new support pile 5 is flush with the foundation pit 2, and the support beam 4 is flush with the crown beam 6. By arranging the upper end surface of the new support pile 5 to be flush with the foundation pit 2, namely the upper end surface of the new support pile 5 to be flush with the foundation pit bottom plane 11, in the original foundation pit 2, the height of the new support pile 5 does not need to be additionally increased or reduced, and the excavation surface of the foundation pit 2 is not influenced; through setting up a supporting beam 4 and the 6 parallel and level of guan liang, be about to a supporting beam 4 setting of old fender pile 1 in foundation ditch bottom plane 11 department, guan liang 6 and a supporting beam 4 parallel and level, it is shortest to make the distance between guan liang 6 and a supporting beam 4, and then make and connect the two even roof beam 7 shortest, save material more, and do not influence newly, rigidity with regard to supporting structure, simultaneously, a supporting beam 4 who sets up is in foundation ditch bottom plane 11 department, can pour even roof beam 7 as the supporting template with the help of this foundation ditch bottom plane 11, need not new framework supporting template, save time limit for a project, save material, and it is higher as supporting template stability with foundation ditch bottom plane 11, and then make supporting structure's overall stability higher.
As shown in fig. 1 and 2, optionally, in this embodiment, a plurality of new anchor lines 8 are stretched on the new support piles 5. By stretching a plurality of new anchor cables 8 on the new supporting pile 5, the new supporting pile 5 and the new anchor cables 8 form a new supporting system, the connection strength between the new supporting pile 5 and the soil body on the side wall of the foundation pit is enhanced, effective support for the new supporting pile 5 is formed, the lateral soil pressure of the old supporting pile 1 on the new supporting pile 5 is reduced, the problem that the bearing capacity is weakened due to the fact that the embedding end of the bottom of the new supporting pile 5 in the foundation pit 2 is subjected to relative displacement is solved, potential safety hazards of an old supporting structure in service in an over-period are prevented, and the safety and stability of the foundation pit are ensured.
As shown in fig. 1 and 2, optionally, in this embodiment, the new anchor lines 8 are laid at intervals of one or more new support piles 5. The new anchor rope 8 that sets up is used for strengthening the joint strength of new fender pile 5 and the foundation ditch lateral wall soil body, and also stretch-draw on old fender pile 1 has old anchor rope 3, will be new, old support system links together the back, original old anchor rope 3 has certain additional strengthening to new supporting construction whole on the foundation ditch lateral wall soil body, lay through a plurality of new fender piles 5 with new anchor rope 8 interval, when guaranteeing joint strength and security, save material, reduce construction cost, also can improve the efficiency of construction, in the time of practical application, can suitably increase density according to the actual condition of foundation ditch lateral wall soil body, guarantee the security of foundation ditch.
As shown in fig. 1 and 2, optionally, in this embodiment, the new support piles 5 are arranged in one-to-one correspondence with the old support piles 1, and the coupling beams 7 are arranged in one-to-one correspondence with the new support piles 5. The new supporting piles 5 are in one-to-one correspondence with the old supporting piles 1, the connecting beams 7 are in one-to-one correspondence with the new supporting piles 5, namely the number and the positions of the new supporting piles 5 and the old supporting piles 1 are in one-to-one correspondence, the number and the positions of the connecting beams 7 and the new supporting piles 5 are in one-to-one correspondence, so that all the new supporting piles 5 and all the old supporting piles 1 are connected through the connecting beams 7 one to one, a stable whole is formed, the supporting strength of a supporting structure is guaranteed, particularly for a part of soft soil layers in loess areas, the condition of collapse caused by instability is avoided, and the safety of constructors is improved.
As shown in fig. 1 and 2, optionally, in the present embodiment, the pile diameter of the new support pile 5 is larger than that of the old support pile 1. Through the stake footpath of the new fender pile 5 of increase, strengthen the intensity rigidity of new fender pile 5 self, and then guarantee the holistic intensity of supporting construction, when in actual use, through deepening the degree of depth of new fender pile 5 in foundation ditch 2, increase the stake footpath of new fender pile 5 simultaneously, guarantee that new fender pile 5 has sufficient depth of embedment, guarantee simultaneously that new fender pile 5 self has sufficient intensity rigidity, and then guarantee supporting construction's stability and bearing capacity.
As shown in fig. 1 and 2, optionally, in the present embodiment, the new support piles 5 are equally spaced from the old support piles 1. The distance between the new supporting piles 5 and the old supporting piles 1 is equal by arranging the new supporting piles 5 and the old supporting piles 1, namely the new supporting piles 5 and the old supporting piles 1 are arranged in parallel, the distance between the new supporting piles 5 and the old supporting piles 1 is equal in one-to-one correspondence, and the connecting beams 7 with equal length are arranged between the new supporting piles 5 and the old supporting piles 1, so that the bearing capacity of all parts corresponding to the connecting beams 7 is the same, a stable whole is formed, and the stability and the bearing capacity of the supporting structure are ensured.
As shown in fig. 1 and 2, optionally, in the present embodiment, a plurality of the new support piles 5 are arranged at equal intervals. Through setting up new fender pile 5 equidistant in foundation ditch 2, new fender pile 1 lays evenly in foundation ditch 2 promptly for the bearing capacity of each position of a plurality of new fender piles 5 is the same, further makes each position bearing capacity of the supporting construction who forms even, ensures supporting construction's stability and bearing capacity.
As shown in fig. 1 and 2, the utility model discloses a supporting construction's that is used for loess area to be out of service foundation ditch reinforced (rfd) construction state and flow as follows: the top end of an original supporting pile 1 which is in service for a long time is flush with a ground plane 10, a supporting beam 4 is cast by reinforced concrete at the intersection of the original supporting pile 1 and a foundation pit bottom plane 11, a plurality of new supporting piles 5 are formed at the foundation pit bottom plane 11 which is 0.5-1 m away from the supporting beam 4 by using a compaction pile machine, after the construction of the new supporting piles 5 is completed, soil 9 between the new supporting piles 5 and old supporting piles 1 is compacted laterally, the new supporting piles 5 are arranged at deeper parts of a foundation pit 2, the height from the ground plane 10 to the bottom ends of the new supporting piles 5 is larger than that of the old supporting piles 1, crown beams 6 are cast at the top ends of the new supporting piles 5, a plurality of connecting beams 7 are arranged between the crown beams 6 and the supporting beams 4, and a plurality of new anchor cables 8 are cast for the new supporting piles 5 according to the actual soil and the condition of an old supporting system.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. The utility model provides a supporting construction for loess area is out of service foundation ditch reinforced (rfd) in term, a plurality of old fender pile (1) including setting up in foundation ditch (2), stretch-draw has a plurality of old anchor ropes (3) on old fender pile (1), and is a plurality of be provided with a supporting beam (4) on the side of old fender pile (1), foundation ditch (2) internal fixation has a plurality of new fender pile (5), just the degree of depth of new fender pile (5) in foundation ditch (2) is greater than old fender pile (1), and is a plurality of the top of new fender pile (5) links together through hat roof beam (6), it is connected through a plurality of even roof beam (7) with hat roof beam (6) to support beam (4).
2. The supporting structure for reinforcing the foundation pit in the loess region for the extended service life according to claim 1, wherein the new supporting pile (5) is a compacted bored pile.
3. The supporting structure for loess area foundation pit reinforcement for extended service according to claim 1, wherein the upper end surface of the new support pile (5) is flush with the foundation pit (2), and the support beam (4) is flush with the top beam (6).
4. The supporting structure for reinforcing the foundation pit in the loess area for the extended service life according to claim 1, wherein a plurality of new anchor cables (8) are stretched on the new supporting piles (5).
5. The supporting structure for reinforcement of the foundation pit in the loess area for the extended service life according to claim 4, wherein the new anchor cables (8) are arranged with one or more new support piles (5) in between.
6. The supporting structure for reinforcing the foundation pit in the loess area for the extended service life according to claim 1, wherein the new supporting piles (5) are arranged in one-to-one correspondence with the old supporting piles (1), and the coupling beams (7) are arranged in one-to-one correspondence with the new supporting piles (5).
7. The supporting structure for reinforcement of the foundation pit in the loess area for the extended service life according to claim 1, wherein the diameter of the new supporting pile (5) is larger than that of the old supporting pile (1).
8. The supporting structure for reinforcement of the foundation pit in the loess area for the extended service life according to claim 6, wherein a plurality of the new supporting piles (5) are spaced apart from a plurality of the old supporting piles (1) by the same distance.
9. The supporting structure for reinforcement of the foundation pit in the loess area for the extended service life according to claim 1, wherein a plurality of the new support piles (5) are arranged at equal intervals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470149.8U CN214883716U (en) | 2021-06-30 | 2021-06-30 | Supporting structure for reinforcing foundation pit in loess area for overdue service |
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| CN202121470149.8U CN214883716U (en) | 2021-06-30 | 2021-06-30 | Supporting structure for reinforcing foundation pit in loess area for overdue service |
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| CN214883716U true CN214883716U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414353A (en) * | 2022-03-29 | 2022-04-29 | 中铁城建集团有限公司 | Method and system for evaluating anchor type supporting performance of foundation pit piles in out-of-service period |
-
2021
- 2021-06-30 CN CN202121470149.8U patent/CN214883716U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414353A (en) * | 2022-03-29 | 2022-04-29 | 中铁城建集团有限公司 | Method and system for evaluating anchor type supporting performance of foundation pit piles in out-of-service period |
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