CN103603358A - Multi-platform retaining structure and construction method - Google Patents
Multi-platform retaining structure and construction method Download PDFInfo
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- CN103603358A CN103603358A CN201310473798.7A CN201310473798A CN103603358A CN 103603358 A CN103603358 A CN 103603358A CN 201310473798 A CN201310473798 A CN 201310473798A CN 103603358 A CN103603358 A CN 103603358A
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Abstract
A multi-platform retaining structure is arranged in a soil body around a foundation pit and comprises an outer-layer retaining device, at least one inner-layer retaining device and a pulling-connecting device between the outer-layer retaining device and the inner-layer retaining device, wherein the inner-layer retaining device is arranged at the low position and located in a foundation pit inner ring, and the outer-layer retaining device is arranged at the high position and located in a foundation pit outer ring, so that a stepped shape with high outside and low inside is formed. The outer-layer retaining device is of a double-layer structure, and the inner-layer retaining device is of a single-layer structure. The multi-platform retaining structure adopts multiple retaining devices, the inner-layer retaining device internally supports the outer-layer retaining device while retaining the foundation pit, support arrangement in the foundation pit is omitted, the safety of the foundation pit construction is improved, and the influence of foundation pit bracing and retaining on upper-portion structure construction is avoided, multiple purposes are achieved through one structure, and the reliable and effective bracing-retaining structure and the construction method are provided for an ultra-deep foundation pit and can be widely applied to bracing and retaining of a large deep foundation pit, especially the ultra-deep foundation pit.
Description
Technical field
The present invention relates to foundation pit enclosure structure and construction method thereof in a kind of building structure geotechnical engineering, particularly a kind of foundation pit enclosure structure without inner support and construction method thereof.
Background technology
Along with the development of building construction technology, how the application of ultra-deep foundation pit more and more extensive, rationally effectively carry out supporting to ultra-deep foundation pit, is the technological core in foundation pit construction.At present, the support pattern of deep foundation ditch is generally fender post and adds the form that foundation ditch inner support adds anchor pole, and this support form is safe, but causes the interior place of foundation ditch often narrower and small, because the existence of foundation ditch inner support has a strong impact on the problem of main structure construction, slowed down construction speed; In addition, foundation ditch is darker, the situation of its surrounding soil is more complicated, tend to occur that some cannot carry out the reinforcing of lateral stability by beating the mode of anchor pole, also have, increase along with foundation depth, groundwater pressure is larger, waterproof in foundation ditch, foundation ditch safety, ambient influnence are played to decisive role, only by fender post, add the space enclosing structure stagnant water effect of anchor pole poor, rigidity is little, and be easy to surrounding enviroment to impact, be not suitable for that there is to the pattern foundation pit supporting structure of subway, road, building etc. in the construction environment region of having relatively high expectations as periphery.
Summary of the invention
The object of this invention is to provide a kind of multi-platform without inner support from waterproof foundation pit enclosure structure and construction method thereof, solve the technical problem that ultra-deep foundation pit supporting safety, waterproof and support form facilitate for Superstructure Construction as far as possible.
For achieving the above object, the present invention adopts following technical scheme:
A kind of multi-platform space enclosing structure, go along with sb. to guard him in foundation ditch surrounding soil, comprise outer enclosure device, at least one internal layer enclosure device and drawknot device between the two, wherein, internal layer enclosure device is low, is positioned at foundation ditch ring, and described outer enclosure device is high, be positioned at foundation ditch outer shroud, form the stepped of outer high interior ground;
Described outer enclosure device comprises and is arranged on front-seat continuous high fender member, is arranged on the high stake of the interrupted anti-side of rear row and is arranged on the coupling beam between both tops, and described high fender member is provided with the cap vertical with coupling beam with the high stake of an anti-side top;
Described internal layer enclosure device is diaphragm wall parapet or goes along with sb. to guard him low stake and sealing piling wall that the interlock of water-seal pile B interval forms, described in go along with sb. to guard him low stake and water-seal pile B end face passes through cap drawknot;
Described drawknot device is by being embedded in built-in fitting and the above-mentioned rigid connection node that forms in high fender member and internal layer enclosure device between the two.
Also comprise respectively the anchor pole B to the oblique setting of the platform soil body between outer enclosure device and internal layer enclosure device from the anchor pole A of outer enclosure device oblique setting of the soil body outside foundation ditch or/and from internal layer enclosure device.
Described high fender member is diaphragm wall high-wall or by going along with sb. to guard him high stake and the water-seal pile A sealing piling wall that interlock forms that interlocks.
Described to go along with sb. to guard him high stake and go along with sb. to guard him low stake be piling bar or reinforced concrete pile, and described water-seal pile is plain concrete pile.
Describedly go along with sb. to guard him the corresponding setting in front and back between high stake and the high stake of anti-side, between both tops, by coupling beam, draw as integral body.
The described diameter of going along with sb. to guard him high stake and going along with sb. to guard him low stake is 300mm～2500mm, and both are isometrical or not isometrical; The thickness of described diaphragm wall high-wall and diaphragm wall parapet is 200 mm～2500 mm, both uniform thickness or not uniform thickness; Described cap depth of beam is its drawknot goes along with sb. to guard him high stake and goes along with sb. to guard him 0.1～5 times of low stake diameter.
Described drawknot device is to be disposed on the drawknot beam of platform soil body end face or the beam slab drawknot device of drawknot beam and base plate composition; Described base plate between drawknot beam continuously or interval arrange, described drawknot beam is girder steel, concrete beam, reinforced concrete beam or or reinforced concrete truss, steel truss.
Described built-in fitting is L-type protruding bar, L shaped bending reinforcing steel bar, bar planting or grooved bending reinforcing steel bar, and described grooved bending reinforcing steel bar is connected by weld seam with the main muscle of drawknot beam, and described L shaped bending reinforcing steel bar is connected by sleeve pipe with the main muscle of drawknot beam.
The construction method of described multi-platform space enclosing structure, step is as follows:
Step 5, the reinforcing bar of colligation drawknot device, and be reliably connected with the reinforcing bar of cap and the built-in fitting of high fender member;
The construction method of described multi-platform space enclosing structure, between described step 3 and step 4, at the anchor pole A from the oblique setting of the soil body outside foundation ditch of outer enclosure device; Or/and from internal layer enclosure device the anchor pole B to oblique setting in the platform soil body; Or above-mentioned steps is implemented simultaneously.
Compared with prior art the present invention has following characteristics and beneficial effect:
First, by outer enclosure device is set, at least one internal layer enclosure device and drawknot device between the two, form a plurality of inner platforms on outer high interior ground, by ultra-deep foundation pit by the change of supporting and protection structure, reduce its degree of depth, reduced the requirement to internal layer enclosure device strength and stiffness, described internal layer enclosure device is arranged in outer enclosure device simultaneously, being equivalent to provides an inner support to outer enclosure device, and then strengthen the degree of safety of outer enclosure device, simultaneously between outer enclosure device and internal layer enclosure device by drawknot device drawknot, strengthened the globality of whole space enclosing structure, avoid arranging support in foundation ditch simultaneously, construction to superstructure has no effect, accelerate the integral construction speed of building.
Moreover outer enclosure device and internal layer enclosure device are the double enclosure device that fender post or diaphragm wall and anti-side stake form, and the front row of double-row pile is set to the form of fender post and water-seal pile interlock, guaranteed rigidity and the sealing of space enclosing structure.
Also have, internal layer enclosure device is arranged on foundation ditch inside compared with position, deep, has reduced the foundation ditch peripheral soil body compared with the difficulty of construction in the improper situation of beating anchor pole of position, deep soil property, has accelerated the construction speed of foundation pit enclosure structure.
In addition, structure of the present invention and method, versatile and flexible, the piling wall that space enclosing structure can form for diaphragm wall or fender post and water-seal pile interlock, can select flexibly and arrange according to field condition in Practical Project, simple in structure, easy construction, easy to implement, safe, the support form of cancelling inner support for deep foundation ditch or ultra-deep foundation pit provides a kind of brand-new thinking.
The present invention can be widely used in the extremely construction of space enclosing structure of going along with sb. to guard him of deep foundation ditch and ultra-deep foundation pit.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the embodiment of the present invention two structural representations.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the structural representation of the embodiment of the present invention three.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is node A place detail drawing one in Fig. 1 and Fig. 3.
Fig. 6 is node A place detail drawing two in Fig. 1 and Fig. 3.
Fig. 7 is node A place detail drawing three in Fig. 1 and Fig. 3.
Fig. 8 is node A place detail drawing four in Fig. 1 and Fig. 3.
Fig. 9 is Node B place detail drawing one in Fig. 1.
Figure 10 is Node B place detail drawing two in Fig. 1.
Figure 11 is Node B place detail drawing three in Fig. 1.
Figure 12 is Node B place detail drawing four in Fig. 1.
Reference numeral: 1-goes along with sb. to guard him high stake, 2-water-seal pile A, 3-cap, 4-and goes along with sb. to guard him low stake, 5-diaphragm wall high-wall, 6-base plate, 7-drawknot beam, 8-anchor pole A, 9-foundation ditch surrounding soil, 10-L type protruding bar, 11-sleeve pipe, 12-bar planting, the stake of the anti-side height of 13-anchor pole B, 14-, the 15-platform soil body, 16-water-seal pile B, 17-coupling beam, 18-L shape bending reinforcing steel bar, 19-weld seam, 20-grooved bending reinforcing steel bar, 21-diaphragm wall parapet.
The specific embodiment
Embodiment mono-is referring to shown in Fig. 1, Fig. 2 and Fig. 5 to Figure 12, a kind of multi-platform space enclosing structure, go along with sb. to guard him in foundation ditch surrounding soil 9, comprise outer enclosure device, at least one internal layer enclosure device and drawknot device between the two, wherein, internal layer enclosure device is low, be positioned at foundation ditch ring, described outer enclosure device is high, is positioned at foundation ditch outer shroud, forms the stepped of outer high interior ground;
Described outer enclosure device comprises and is arranged on front-seat continuous high fender member, is arranged on the high stake 14 of the interrupted anti-side of rear row and is arranged on the coupling beam 17 between both tops, and described high fender member is provided with the cap vertical with coupling beam 17 3 with the high stake of anti-side 14 tops; Described internal layer enclosure device is diaphragm wall parapet 21; Described drawknot device is by being embedded in built-in fitting and the above-mentioned rigid connection node that forms in high fender member and internal layer enclosure device between the two.Also comprise respectively the anchor pole B13 to the platform soil body 15 oblique settings between outer enclosure device and internal layer enclosure device from the anchor pole A8 of the outer enclosure device soil body 9 oblique settings outside foundation ditch or/and from internal layer enclosure device.Described high fender member is diaphragm wall high-wall 5 or by the sealing piling wall of going along with sb. to guard him the staggered interlock of high stake 1 and water-seal pile A and forming.Described to go along with sb. to guard him high stake 1 and go along with sb. to guard him low stake 4 be piling bar or reinforced concrete pile, and described water-seal pile is plain concrete pile.Describedly go along with sb. to guard him the corresponding setting in front and back between high stake 1 and the high stake 14 of anti-side, between both tops, by coupling beam 17, draw as integral body.The described diameter of going along with sb. to guard him high stake 1 and going along with sb. to guard him low 4 is 300mm～2500mm, and both are isometrical or not isometrical; The thickness of described diaphragm wall high-wall 5 and diaphragm wall parapet 21 is 200 mm～2500 mm, both uniform thickness or not uniform thickness; The height of described cap 3 is its drawknot goes along with sb. to guard him high stake 1 and goes along with sb. to guard him 0.1～5 times of low stake 4 diameters.Described drawknot device is to be disposed on the drawknot beam 7 of the platform soil body 15 end faces or the beam slab drawknot device of drawknot beam 7 and base plate 6 compositions; Described base plate 6 between drawknot beam 7 continuously or interval arrange, described drawknot beam 7 is girder steel, concrete beam, reinforced concrete beam or or reinforced concrete truss, steel truss.Described built-in fitting is L-type protruding bar 10, L shaped bending reinforcing steel bar 18, bar planting 12 or grooved bending reinforcing steel bar 20, described grooved bending reinforcing steel bar 20 is connected by weld seam 19 with the main muscle of drawknot beam 7, and described L shaped bending reinforcing steel bar 18 is connected by sleeve pipe 11 with the main muscle of drawknot beam 7.
Embodiment bis-is referring to shown in Fig. 3, Fig. 4 and Fig. 5 to Figure 12, different from embodiment mono-is, described internal layer enclosure device is gone along with sb. to guard him the sealing piling wall that low stake 4 and the interlock of water-seal pile B16 interval form for layer, described in go along with sb. to guard him low stake 4 and water-seal pile B16 end face by cap 3 drawknots.
The construction method of described multi-platform space enclosing structure, step is as follows:
Step 5, the reinforcing bar of colligation drawknot device, and be reliably connected with the reinforcing bar of cap and the built-in fitting of high fender member;
Between described step 3 and step 4, at the anchor pole A8 from the soil body 9 oblique settings outside foundation ditch of outer enclosure device; Or/and from internal layer enclosure device the anchor pole B13 to the 15 interior oblique settings of the platform soil body; Or above-mentioned steps is implemented simultaneously.
Claims (9)
1. a multi-platform space enclosing structure, go along with sb. to guard him in foundation ditch surrounding soil (9), it is characterized in that: comprise outer enclosure device, at least one internal layer enclosure device and drawknot device between the two, wherein, internal layer enclosure device is low, is positioned at foundation ditch ring, and described outer enclosure device is high, be positioned at foundation ditch outer shroud, form the stepped of outer high interior ground;
Described outer enclosure device comprises and is arranged on front-seat continuous high fender member, is arranged on the interrupted high stake of anti-side (14) of rear row and is arranged on the coupling beam (17) between both tops, and described high fender member is provided with the cap (3) vertical with coupling beam (17) with the high stake of anti-side (14) top;
Described internal layer enclosure device is diaphragm wall parapet (21) or goes along with sb. to guard him low stake (4) and water-seal pile B(16) the sealing piling wall that forms of interval interlock, described in go along with sb. to guard him low stake (4) and water-seal pile B(16) end face passes through cap (3) drawknot;
Described drawknot device is by being embedded in built-in fitting and the above-mentioned rigid connection node that forms in high fender member and internal layer enclosure device between the two.
2. multi-platform space enclosing structure according to claim 1, is characterized in that: also comprise respectively the anchor pole A(8 from the oblique setting of the soil body (9) outside foundation ditch of outer enclosure device) or/and from internal layer enclosure device the anchor pole B(13 to the oblique setting of the platform soil body (15) between outer enclosure device and internal layer enclosure device).
3. multi-platform space enclosing structure according to claim 1 and 2, is characterized in that: described high fender member be diaphragm wall high-wall (5) or by going along with sb. to guard him high stake (1) and water-seal pile A(2) the sealing piling wall that forms of the interlock that interlocks.
4. multi-platform space enclosing structure according to claim 1 and 2, is characterized in that: described in to go along with sb. to guard him high stake (1) and go along with sb. to guard him low stake (4) be piling bar or reinforced concrete pile, described water-seal pile (2) is plain concrete pile.
5. multi-platform space enclosing structure according to claim 1 and 2, is characterized in that: described in the diameter of going along with sb. to guard him high stake (1) and going along with sb. to guard him low (4) be 300mm～2500mm, both are isometrical or not isometrical; The thickness of described diaphragm wall high-wall (5) and diaphragm wall parapet (21) is 200 mm～2500 mm, both uniform thickness or not uniform thickness; The height of described cap (3) is its drawknot goes along with sb. to guard him high stake (1) and goes along with sb. to guard him 0.1～5 times of low (4) diameter.
6. multi-platform space enclosing structure according to claim 1 and 2, is characterized in that: described drawknot device is for being disposed on the drawknot beam (7) of the platform soil body (15) end face or the beam slab drawknot device of drawknot beam (7) and base plate (6) composition; Described base plate (6) between drawknot beam (7) continuously or interval arrange, described drawknot beam (7) is girder steel, concrete beam, reinforced concrete beam or or reinforced concrete truss, steel truss.
7. multi-platform space enclosing structure according to claim 6, it is characterized in that: described built-in fitting is L-type protruding bar (10), L shaped bending reinforcing steel bar (18), bar planting (12) or grooved bending reinforcing steel bar (20), described grooved bending reinforcing steel bar (20) is connected by weld seam (19) with the main muscle of drawknot beam (7), and described L shaped bending reinforcing steel bar (18) is connected by sleeve pipe (11) with the main muscle of drawknot beam (7).
8. according to the construction method of the multi-platform space enclosing structure described in above-mentioned any one claim, it is characterized in that: step is as follows:
Step 1, the high fender member of construction put the pre-buried built-in fitting in position of platform proposing in foundation ditch surrounding soil (9), at high fender member end face construction cap (3);
Step 2, deviating from the direction interval of the intending excavation pit high stake of anti-side (14) of constructing, at the high stake of anti-side (14) end face construction cap (3);
Step 3, the coupling beam (17) of constructing on the soil body between high fender member and the high stake of anti-side (14);
Step 4, excavation pit is to certain depth at the short fender member of the upper construction of the platform soil body (15) forming, at the reinforcing bar of short fender member end face colligation cap (3);
Step 5, the reinforcing bar of colligation drawknot device, and be reliably connected with the reinforcing bar of cap and the built-in fitting of high fender member;
Step 6, builds the concrete of drawknot device and the concrete of cap (3);
Step 7, repeating step four to six, until last platform soil body position in foundation ditch.
9. the construction method of multi-platform space enclosing structure according to claim 9, is characterized in that: between described step 3 and step 4, at the anchor pole A(8 from the oblique setting of the soil body (9) outside foundation ditch of outer enclosure device); Or/and from internal layer enclosure device the anchor pole B(13 to oblique setting in the platform soil body (15)); Or above-mentioned steps is implemented simultaneously.
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| CN201310473798.7A CN103603358B (en) | 2013-10-12 | 2013-10-12 | A kind of multi-platform building enclosure and constructional method |
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| CN201310473798.7A CN103603358B (en) | 2013-10-12 | 2013-10-12 | A kind of multi-platform building enclosure and constructional method |
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| CN103603358B CN103603358B (en) | 2016-06-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104164880A (en) * | 2014-06-11 | 2014-11-26 | 易朋莹 | Multi-stage h type retaining pile and construction method thereof |
| CN104863161A (en) * | 2015-05-13 | 2015-08-26 | 中铁大桥局集团有限公司 | River limb construction protection method |
| CN105586985A (en) * | 2014-11-14 | 2016-05-18 | 广州地铁设计研究院有限公司 | Construction method of subway envelop enclosure structure and subway envelop enclosure structure |
| CN107794927A (en) * | 2017-09-11 | 2018-03-13 | 广州机施建设集团有限公司 | A kind of deep foundation pit earthwork digging method with hard rock geology |
| CN108661056A (en) * | 2018-05-22 | 2018-10-16 | 中铁六局集团有限公司工程设计院 | A kind of peg board combined retaining structure and construction technology up and down |
| CN109778870A (en) * | 2019-01-30 | 2019-05-21 | 湘潭大学 | A kind of support system construction method of deep basal pit |
| CN113356220A (en) * | 2021-06-29 | 2021-09-07 | 大荣建设集团有限公司 | Super high-rise building deep foundation pit and construction method thereof |
| CN114108645A (en) * | 2021-11-02 | 2022-03-01 | 广州地铁设计研究院股份有限公司 | Foundation pit supporting structure adjacent to underground engineering and construction method thereof |
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| CN112049116A (en) * | 2020-08-20 | 2020-12-08 | 韶关市新城兴建筑工程有限公司 | Soft soil layer deep foundation pit excavation construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164880A (en) * | 2014-06-11 | 2014-11-26 | 易朋莹 | Multi-stage h type retaining pile and construction method thereof |
| CN105586985A (en) * | 2014-11-14 | 2016-05-18 | 广州地铁设计研究院有限公司 | Construction method of subway envelop enclosure structure and subway envelop enclosure structure |
| CN104863161A (en) * | 2015-05-13 | 2015-08-26 | 中铁大桥局集团有限公司 | River limb construction protection method |
| CN107794927A (en) * | 2017-09-11 | 2018-03-13 | 广州机施建设集团有限公司 | A kind of deep foundation pit earthwork digging method with hard rock geology |
| CN107794927B (en) * | 2017-09-11 | 2019-12-24 | 广州机施建设集团有限公司 | Deep foundation pit earthwork excavation method with hard rock geology |
| CN108661056A (en) * | 2018-05-22 | 2018-10-16 | 中铁六局集团有限公司工程设计院 | A kind of peg board combined retaining structure and construction technology up and down |
| CN108661056B (en) * | 2018-05-22 | 2020-05-22 | 中铁六局集团有限公司工程设计院 | Pile plate up-and-down combined supporting structure and construction process |
| CN109778870A (en) * | 2019-01-30 | 2019-05-21 | 湘潭大学 | A kind of support system construction method of deep basal pit |
| CN113356220A (en) * | 2021-06-29 | 2021-09-07 | 大荣建设集团有限公司 | Super high-rise building deep foundation pit and construction method thereof |
| CN114108645A (en) * | 2021-11-02 | 2022-03-01 | 广州地铁设计研究院股份有限公司 | Foundation pit supporting structure adjacent to underground engineering and construction method thereof |
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| CN103603358B (en) | 2016-06-08 |
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Effective date of registration: 20221205 Address after: Room 2105, Jiahuiyuan, Huaao Center, No. 31, Zizhuyuan, Haidian District, Beijing 100089 Patentee after: Yao Panfeng Address before: 100073 Room 203, building 13, Huayuan Yili, Fengtai District, Beijing Patentee before: Yao Panfeng Patentee before: ZHONGBEI HUAYU CONSTRUCTION ENGINEERING Co.,Ltd. |