CN105019553A - Bracing structure for annular supports of basement - Google Patents
Bracing structure for annular supports of basement Download PDFInfo
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- CN105019553A CN105019553A CN201510284234.8A CN201510284234A CN105019553A CN 105019553 A CN105019553 A CN 105019553A CN 201510284234 A CN201510284234 A CN 201510284234A CN 105019553 A CN105019553 A CN 105019553A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/04—Watertight packings for use under hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1607—Shapes round, e.g. circle
- E02D2200/1621—Shapes round, e.g. circle made from multiple elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a bracing structure for annular supports of a basement. The bracing structure is characterized in that two support systems are arranged; a first support system is arranged at the top of the basement; a second support system is arranged in the middle of the basement; a first support annular support is of a truss-type structure; a beam-type annular support is adopted by the second support system; a four-part enclosing structure and support top structures of the annular supports are made to be concrete plates; the distance between a first-layer annular external support and an enclosure wall is kept between 1.5 and 3 cm; a propping support is arranged between the first-layer annular external support and the enclosure wall; a concrete truss web member is arranged between the first-layer annular external support and a first-layer annular internal support; and support columns are arranged underneath the first-layer annular internal support and the first-layer annular external support.
Description
Technical field
Basement structure is increased, particularly basement annular brace supporting and protection structure after the present invention relates to one.
Background technology
In basement support system, inner support supporting and protection structure has the features such as safe and reliable, economical rationality, is used widely in base pit engineering.But routine causes great inconvenience to the construction of inner support to basement soil excavation and underground structure that support mode is arranged, the consequences such as the generation construction period extends, less economical.Adopt annular brace to substitute the conventional supporting structure system to support mode, higher economic benefit can be obtained.But annular brace is when when basement excavation is darker, especially multiple tracks supports, suffered by first annular brace, lateral pressure can exceed concrete ultimate compressive strength usually, and it is excessive that annular brace there will be displacement, and the bad phenomenon such as cracking occurs annular brace concrete.
Summary of the invention
The present invention is to provide a kind of basement annular brace supporting and protection structure, solves the problem of prior art.
For this reason, the present invention arranges twice support system, first supports and is arranged on basement top, second supports and is arranged in the middle part of basement, is excavated to the stressed meeting in absolute altitude position, the end very greatly, according to the loading characteristic that first is supported in construction, annular brace is made truss structure because first is supported on basement, this rigidity of structure is larger, non-deformability is strong, and the stressed meeting of second support system obviously reduces, and adopts beam type annular brace so just simple.Consider that bight is stressed can concentrate by stress, therefore four corners position space enclosing structure and annular brace top support structure are made concrete slab, carry out resistance to deformation to strengthen bight rigidity.
Enclosure wall width is 60 ~ 80mm, the degree of depth is basement cutting depth 2 ~ 3 times, the concrete that enclosure wall adopts is C30 or more than C30, one deck annular outer support is 1.5 ~ 3m from the distance of enclosure wall, one deck annular outer support width is 30cm, be highly 40 ~ 50cm, one deck circular inner support is 1.2 ~ 1.6m from one deck annular outer support distance, arrange to prop up between one deck annular outer support and enclosure wall and shore, shoring width is 30cm, be highly 40 ~ 50cm, one deck circular inner support width is 30cm, be highly 40 ~ 50cm, between one deck annular outer support and one deck circular inner support, concrete truss web member is set, concrete truss web member width is 20cm, be highly 40 ~ 50cm, below one deck circular inner support and one deck annular outer support, support column is set, support column adopts coagulation post or steel column, support column is arranged on above engineering pile as far as possible, otherwise below support column, temporary support pile is set.
Two layers of annular brace and enclosure wall top support structure adopt concrete slab and prop up to shore and combine, in basement long side direction 1/4 length range and short side direction 1/3 length range, concrete slab is set, basement medium position arranges to prop up to be shored, to shore for two layers and to prop up with one deck that to shore projected position identical, the support column of two layers of annular brace is identical with the support column of one deck annular outer support.
Care-supporting of propping up one deck stretches into enclosure wall inside, is formed be rigidly connected with enclosure wall, and two layers care-supportings are welded with the reserved steel bar outside enclosure wall, form articulated structure, to adapt to the feature of space enclosing structure.According to test situation, one deck props up after care-supporting and enclosure wall form and be rigidly connected, and evenly and distortion is relatively little, and enclosure wall distortion is relatively large in annular brace distortion; After two layers care-supportings and enclosure wall form articulated structure, be out of shape relatively large, but enclosure wall distortion is relatively little.
Construction sequence comprises:
(1) enclosure wall construction.
Enclosure wall not only will carry out bank protection, and also will prevent infiltration, enclosure wall doubles as outer wall of basement.Enclosure wall construction adopts template on an empty stomach, template sinks to stratum by the vertical exciting force of the vertical generation of reciprocating vibration of vibrating hammer on an empty stomach, slurries are filled immediately in empty stomach, when vibration dip mould promotes, slurries inject in slotted eye from template lower end under gravity, sink to the guide strip of template after the template first having sunk to stratum becomes, two pieces of templates present the effect that plate plate interlocks, and ensure that each veneer body is closely integrated into wall in a plane.
Construction technology comprises:
1) preformed groove is excavated;
2) prebored hole;
In the junction prebored hole of two pieces of templates, prebored hole diameter is 90 ~ 110cm;
3) vibration dip mould;
Start vibration hammer, first piece of template sunk in stratum, reaches projected depth, then by second piece of template along construction axis first piece of front side with first piece of template tight side by side, with first piece of template for guide strip, sink to stratum and reach projected depth;
4) lifting first piece of template is poured into;
In first piece of template, pour into slurry, then limit lifting limit perfusion, until extract ground, slurry is stayed in slotted eye, after perfusion lifting terminates, slurry be kept to reach wall top design altitude;
5) template is sunk to again;
With second piece of template for guide strip, sink to stratum and reach projected depth, Reperfu-sion promotes second piece of template; Construct by above program cycle, can enclosure wall be completed.
Current traditional handicraft be adopt cut the earth fluting, mud off, scarfing cinder, build underwater concrete, process seam series operation, be easy to collapse hole when slotting in permeable stratum, enclosure wall often do not reach thickness and occur break wall phenomenon.And the present invention is with powerful vertical exciting force, empty stomach template is sunk to soil layer, template and slurries serve retaining wall effect, not only not soil stress rationally release in work progress, and in vibration dip mould process, by its soil at both sides dense extrusion, improve impermeability.Due to the present invention original soil body by template squeezing action under complete.And mould marginal not slurry is carried on limit in promotion template procedure, slurries produce in note people groove at the bottom of template, starch column pressure in addition and are greater than soil body lateral pressure, therefore there will not be contracting wall and wall phenomenon of collapsing.
(2) support column construction.
Look like under support column without engineering pile, after temporary support pile of first constructing, support column is inserted temporary support pile.If there is engineering pile, directly support column is inserted temporary support pile.
(3) do one deck annular outer support, one deck circular inner support, concrete truss web member, one deck prop up and shore.
(4) cut the earth to absolute altitude position at the bottom of two layers of annular brace, do two layers of annular brace, enclosure wall, at two layers of support zone localized delamination concrete, welds reserved steel bar outside exposed main muscle, then concreting plate, finally do two layers and shore.
(5) 10cm below absolute altitude at the bottom of shoveling to basement bottom board, first does plain concrete cushion layer, then builds basement bottom board concrete.
When building basement bottom board construction, the position that water yield is large is adopted and dredges the stifled technical scheme combined, little for water yield, the position that water pressure is little adopts the method for shutoff by force, water smash plain concrete cushion layer time, with the casting and compacting of concrete mixing accelerating admixture in subrange, namely concrete solidifies at 1 ~ 2min.For the situation that water yield is large, with plastic flexible pipe water guide in sump, when cushion cap base plate waters and smash and reached 80% intensity, close sump again.The shutoff of sump is carried out as follows: water is concentrated in steel pipe, and diameter of steel tube is 50mm, and steel pipe inner wall has screw thread; Close water pipe with in spiral shell head precession steel pipe, build the concrete that base plate reserves hole.The inwall in reserved hole arranges groove for sealing, and rear pouring concrete mixes U EA expansion agent, guarantees the good combination of new-old concrete.
(6) to two layers of annular brace, concrete slab, two layers to shore and carry out explosion, remove support column after explosion.
Adopt static blasting, static blasting adopt the expansion force of expanding material more than 30MPa, static blasting reserving hole diameter is 30 ~ 40mm, reserving hole spacing is that 0.3 ~ 0.4m controls, reserving hole indwelling position, end is apart from structure floor 150mm ~ 200mm, and on member cross-sections, hole area is no more than section area 10%; In reserving hole, the main muscle of reinforced concrete member or stirrup cut off, and guarantee that the binding force of reinforcing bar does not affect demolition effect.
(7) two layers of basement roof are built.
(8) one deck annular outer support, one deck circular inner support, concrete truss web member, one deck are propped up to shore and carry out explosion.
(9) one deck basement roof is built.
Accompanying drawing explanation
Fig. 1 is one deck basement annular brace supporting and protection structure schematic diagram, and Fig. 2 is two layers of basement annular brace supporting and protection structure schematic diagram.
In each accompanying drawing: 1, enclosure wall, 2, one deck props up and shore, 3, one deck annular outer support, 4, one deck circular inner support, 5, concrete truss web member, 6, support column, 7, two layers of annular brace, 8, concrete slab, shore for 9, two layers.
Detailed description of the invention
Certain engineering is 18 layers of building, and be frame cylinder shear wall structure, basement cutting depth is 7.2m, and basement is irregularly shaped, and engineering pile is bored pile, and the bored pile degree of depth is 42m.
The present embodiment arranges twice support system, and first supports and is arranged on basement top, and second supports and is arranged in the middle part of basement, and first supports annular brace and makes truss structure, and second support system adopts beam type annular brace.Four corners position space enclosing structure and annular brace top support structure make two layers of annular brace 8.
Enclosure wall 1 width is 70mm, the degree of depth is basement cutting depth 2.5 times, the concrete that enclosure wall 1 adopts is C30, one deck annular outer support 3 is 2m from the distance of enclosure wall 1, one deck annular outer support 3 width is 30cm, be highly 45cm, one deck circular inner support 4 from one deck annular outer support 3 apart from being 1.4m, arrange to prop up between one deck annular outer support 3 and enclosure wall 1 and shore, shoring width is 30cm, be highly 45cm, one deck circular inner support 4 width is 30cm, be highly 45cm, between one deck annular outer support 3 and one deck circular inner support 4, concrete truss web member 5 is set, concrete truss web member 5 width is 20cm, be highly 45cm, one deck circular inner support 4 and one deck annular outer support 3 arrange support column 6 below, support column 6 adopts coagulation post or steel column, support column 6 is arranged on above engineering pile as far as possible, otherwise support column 6 arranges temporary support pile below.
Two layers of annular brace 7 and enclosure wall 1 top support structure adopt two layers of annular brace 8 and prop up to shore and combine, in basement long side direction 1/4 length range and short side direction 1/3 length range, concrete slab is set, basement medium position arranges to prop up to be shored, to shore 9 for two layers and to prop up with one deck that to shore 2 projected positions identical, the support column 6 of two layers of annular brace 7 is identical with the support column 6 of the annular outer support 3 of one deck.
It is inner that care-supporting of propping up one deck stretches into enclosure wall 1, formed be rigidly connected with enclosure wall 1, and two layers care-supportings are welded with the reserved steel bar outside enclosure wall 1, form articulated structure.
Construction sequence comprises:
(1) enclosure wall 1 is constructed.
Enclosure wall 1 is constructed and is adopted template on an empty stomach, template sinks to stratum by the vertical exciting force of the vertical generation of reciprocating vibration of vibrating hammer on an empty stomach, slurries are filled immediately in empty stomach, when vibration dip mould promotes, slurries inject in slotted eye from template lower end under gravity, sink to the guide strip of template after the template first having sunk to stratum becomes, two pieces of templates present the effect that plate plate interlocks, and ensure that each veneer body is closely integrated into wall in a plane.
Construction technology comprises:
1) preformed groove is excavated;
2) prebored hole;
In the junction prebored hole of two pieces of templates, prebored hole diameter is 100cm;
3) vibration dip mould;
Start vibration hammer, first piece of template sunk in stratum, reaches projected depth, then by second piece of template along construction axis first piece of front side with first piece of template tight side by side, with first piece of template for guide strip, sink to stratum and reach projected depth;
4) lifting first piece of template is poured into;
In first piece of template, pour into slurry, then limit lifting limit perfusion, until extract ground, slurry is stayed in slotted eye, after perfusion lifting terminates, slurry be kept to reach wall top design altitude;
5) template is sunk to again;
With second piece of template for guide strip, sink to stratum and reach projected depth, Reperfu-sion promotes second piece of template; Construct by above program cycle, enclosure wall 1 can be completed.
(2) support column 6 is constructed.
Support column is looked like without engineering pile 6 times, after temporary support pile of first constructing, support column 6 is inserted temporary support pile.If there is engineering pile, directly support column 6 is inserted temporary support pile.
(3) do one deck annular outer support 3, one deck circular inner support 4, concrete truss web member 5, one deck prop up and shore 2.
(4) cut the earth to two layers of annular brace 7 end absolute altitude position, do two layers of annular brace 7, enclosure wall 1, at two layers of support zone localized delamination concrete, welds reserved steel bar outside exposed main muscle, then builds two layers of annular brace 8, finally does two layers and shore 9.
(5) 10cm below absolute altitude at the bottom of shoveling to basement bottom board, first does plain concrete cushion layer, then builds basement bottom board concrete.
When building basement bottom board construction, the position that water yield is large is adopted and dredges the stifled technical scheme combined, little for water yield, the position that water pressure is little adopts the method for shutoff by force, water smash plain concrete cushion layer time, with the casting and compacting of concrete mixing accelerating admixture in subrange, namely concrete solidifies at 1 ~ 2min.For the situation that water yield is large, with plastic flexible pipe water guide in sump, when cushion cap base plate waters and smash and reached 80% intensity, close sump again.The shutoff of sump is carried out as follows: water is concentrated in steel pipe, and diameter of steel tube is 50mm, and steel pipe inner wall has screw thread; Close water pipe with in spiral shell head precession steel pipe, build the concrete that base plate reserves hole.The inwall in reserved hole arranges groove for sealing, and rear pouring concrete mixes U EA expansion agent, guarantees the good combination of new-old concrete.
(6) 9 are shored to two layers of annular brace, 7, two layers of annular brace 8, two layers and carry out explosion, after explosion, remove support column 6.
Adopt static blasting, static blasting adopt the expansion force of expanding material to be 35MPa, static blasting reserving hole diameter is 35mm, reserving hole spacing is that 0.3 ~ 0.4m controls, reserving hole indwelling position, end is apart from structure floor 200mm, and on member cross-sections, hole area is no more than section area 10%; In reserving hole, the main muscle of reinforced concrete member or stirrup cut off, and guarantee that the binding force of reinforcing bar does not affect demolition effect.
(7) two layers of basement roof are built.
(8) one deck annular outer support 3, one deck circular inner support 4, concrete truss web member 5, one deck are propped up shore 2 and carry out explosion.
(9) one deck basement roof is built.
Analyzed by computer simulation emulation, this structure and other support systems are contrasted.The first situation is for adopting the present embodiment, and the second situation is for adopt inner support merely, and the third situation is that one deck two layers adopts annular brace.Table 1 is different support system displacement and mechanical property contrast, and find in table that the supporting maximum horizontal displacement of the present embodiment is far smaller than the second situation and the third situation, being respectively 38.6% of the second situation, is 57.9% of the second situation.The greatest axis power of the present embodiment significantly reduces, and is respectively 59.6% of the second situation, is 79.9% of the second situation.The maximal bending moment of the present embodiment significantly reduces, and is respectively 62.8% of the second situation, is 79.0% of the second situation.
The different support system displacement of table 1 and mechanical property contrast
Through this basement of Site Detection Stability Analysis of Structures in work progress, supporting displacement is no more than 11mm, and support beam structure is stablized, and phenomenon without exception occurs.
Claims (7)
1. a basement annular brace supporting and protection structure, it is characterized in that arranging twice support system, first supports and is arranged on basement top, and second supports and is arranged in the middle part of basement, first supports annular brace and makes truss structure, and second support system adopts beam type annular brace; Four corners position space enclosing structure and annular brace top support structure make concrete slab;
Enclosure wall width is 60 ~ 80mm, the degree of depth is basement cutting depth 2 ~ 3 times, the concrete that enclosure wall adopts is C30 or more than C30, one deck annular outer support is 1.5 ~ 3m from the distance of enclosure wall, one deck annular outer support width is 30cm, be highly 40 ~ 50cm, one deck circular inner support is 1.2 ~ 1.6m from one deck annular outer support distance, arrange to prop up between one deck annular outer support and enclosure wall and shore, shoring width is 30cm, be highly 40 ~ 50cm, one deck circular inner support width is 30cm, be highly 40 ~ 50cm, between one deck annular outer support and one deck circular inner support, concrete truss web member is set, concrete truss web member width is 20cm, be highly 40 ~ 50cm, below one deck circular inner support and one deck annular outer support, support column is set, support column adopts coagulation post or steel column, support column is arranged on above engineering pile as far as possible, otherwise below support column, temporary support pile is set,
Two layers of annular brace and enclosure wall top support structure adopt concrete slab and prop up to shore and combine, in basement long side direction 1/4 length range and short side direction 1/3 length range, concrete slab is set, basement medium position arranges to prop up to be shored, to shore for two layers and to prop up with one deck that to shore projected position identical, the support column of two layers of annular brace is identical with the support column of one deck annular outer support.
2. basement annular brace supporting and protection structure according to claim 1, is characterized in that construction sequence comprises:
(1) enclosure wall construction;
Enclosure wall construction adopts template on an empty stomach, template sinks to stratum by the vertical exciting force of the vertical generation of reciprocating vibration of vibrating hammer on an empty stomach, slurries are filled immediately in empty stomach, when vibration dip mould promotes, slurries inject in slotted eye from template lower end under gravity, sink to the guide strip of template after the template first having sunk to stratum becomes, two pieces of templates present the effect that plate plate interlocks, and ensure that each veneer body is closely integrated into wall in a plane;
(2) support column construction;
Look like under support column without engineering pile, after temporary support pile of first constructing, support column is inserted temporary support pile; If there is engineering pile, directly support column is inserted temporary support pile;
(3) do one deck annular outer support, one deck circular inner support, concrete truss web member, one deck prop up and shore;
(4) cut the earth to absolute altitude position at the bottom of two layers of annular brace, do two layers of annular brace, enclosure wall, at two layers of support zone localized delamination concrete, welds reserved steel bar outside exposed main muscle, then concreting plate, finally do two layers and shore;
(5) 10cm below absolute altitude at the bottom of shoveling to basement bottom board, first does plain concrete cushion layer, then builds basement bottom board concrete;
(6) to two layers of annular brace, concrete slab, two layers to shore and carry out explosion, remove support column after explosion;
(7) two layers of basement roof are built;
(8) one deck annular outer support, one deck circular inner support, concrete truss web member, one deck are propped up to shore and carry out explosion;
(9) one deck basement roof is built.
3. basement annular brace supporting and protection structure according to claim 1, it is characterized in that one deck props up care-supporting and stretches into revetment inside, grain bin, formed with grain bin revetment and be rigidly connected, two layers care-supportings are welded with the reserved steel bar outside enclosure wall, form articulated structure.
4. basement annular brace supporting and protection structure according to claim 1, is characterized in that enclosure wall not only will carry out bank protection, and also will prevent infiltration, enclosure wall doubles as outer wall of basement.
5. basement annular brace supporting and protection structure according to claim 1, is characterized in that enclosure wall construction technology comprises:
1) preformed groove is excavated;
2) prebored hole;
In the junction prebored hole of two pieces of templates, prebored hole diameter is 90 ~ 110cm;
3) vibration dip mould;
Start vibration hammer, first piece of template sunk in stratum, reaches projected depth, then by second piece of template along construction axis first piece of front side with first piece of template tight side by side, with first piece of template for guide strip, sink to stratum and reach projected depth;
4) lifting first piece of template is poured into;
In first piece of template, pour into slurry, then limit lifting limit perfusion, until extract ground, slurry is stayed in slotted eye, after perfusion lifting terminates, slurry be kept to reach wall top design altitude;
5) template is sunk to again;
With second piece of template for guide strip, sink to stratum and reach projected depth, Reperfu-sion promotes second piece of template; Construct by above program cycle, can enclosure wall be completed.
6. basement annular brace supporting and protection structure according to claim 2, it is characterized in that when building basement bottom board construction, the position that water yield is large is adopted and dredges the stifled technical scheme combined, little for water yield, the position that water pressure is little adopts the method for shutoff by force, water smash plain concrete cushion layer time, with the casting and compacting of concrete mixing accelerating admixture in subrange, namely concrete solidifies at 1 ~ 2min; For the situation that water yield is large, with plastic flexible pipe water guide in sump, when cushion cap base plate waters and smash and reached 80% intensity, close sump again; The shutoff of sump is carried out as follows: water is concentrated in steel pipe, and diameter of steel tube is 50mm, and steel pipe inner wall has screw thread; Close water pipe with in spiral shell head precession steel pipe, build the concrete that base plate reserves hole; The inwall in reserved hole arranges groove for sealing, and rear pouring concrete mixes UEA expansion agent, guarantees the good combination of new-old concrete.
7. basement annular brace supporting and protection structure according to claim 2, it is characterized in that adopting static blasting, static blasting adopt the expansion force of expanding material more than 30MPa, static blasting reserving hole diameter is 30 ~ 40mm, reserving hole spacing is that 0.3 ~ 0.4m controls, reserving hole indwelling position, end is apart from structure floor 150mm ~ 200mm, and on member cross-sections, hole area is no more than section area 10%.In reserving hole, the main muscle of reinforced concrete member or stirrup cut off, and guarantee that the binding force of reinforcing bar does not affect demolition effect.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710189946.0A CN106894420B (en) | 2015-05-22 | 2015-05-22 | Basement construction method for supporting |
| CN201710189849.1A CN106836240B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace construction method for supporting |
| CN201710189850.4A CN106958247B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace support system |
| CN201510284234.8A CN105019553B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284234.8A CN105019553B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace supporting construction |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710189946.0A Division CN106894420B (en) | 2015-05-22 | 2015-05-22 | Basement construction method for supporting |
| CN201710189850.4A Division CN106958247B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace support system |
| CN201710189849.1A Division CN106836240B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace construction method for supporting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105019553A true CN105019553A (en) | 2015-11-04 |
| CN105019553B CN105019553B (en) | 2017-07-28 |
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Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510284234.8A Active CN105019553B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace supporting construction |
| CN201710189849.1A Active CN106836240B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace construction method for supporting |
| CN201710189850.4A Active CN106958247B (en) | 2015-05-22 | 2015-05-22 | Basement annular brace support system |
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| CN108442508A (en) * | 2018-02-24 | 2018-08-24 | 广州大学 | A kind of double confinement ring frame structure systems |
| CN109680722A (en) * | 2019-01-24 | 2019-04-26 | 江苏南通三建集团股份有限公司 | The construction method for setting external building access port is directly stayed on outer wall of basement body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108867661B (en) * | 2017-09-15 | 2020-10-09 | 叶长青 | Foundation pit supporting construction method |
| CN108560582B (en) * | 2018-04-09 | 2023-08-29 | 成都利拓重工机械有限公司 | Movable support shield for urban pipe bag construction and limiting hinge thereof |
| CN108487261A (en) * | 2018-04-10 | 2018-09-04 | 江西科技学院 | A kind of arch steel structure support |
| CN113550329A (en) * | 2021-09-03 | 2021-10-26 | 朱彦达 | Multilayer basement supporting structure and supporting construction method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106958247A (en) | 2017-07-18 |
| CN106958247B (en) | 2018-11-09 |
| CN105019553B (en) | 2017-07-28 |
| CN106836240A (en) | 2017-06-13 |
| CN106894420B (en) | 2018-08-10 |
| CN106894420A (en) | 2017-06-27 |
| CN106836240B (en) | 2018-08-10 |
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