CN103696429B - A kind of concrete of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill - Google Patents

A kind of concrete of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill Download PDF

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Publication number
CN103696429B
CN103696429B CN201310643389.7A CN201310643389A CN103696429B CN 103696429 B CN103696429 B CN 103696429B CN 201310643389 A CN201310643389 A CN 201310643389A CN 103696429 B CN103696429 B CN 103696429B
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China
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support
concrete
fish belly
belly sill
construction
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CN201310643389.7A
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Chinese (zh)
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CN103696429A (en
Inventor
周冠南
张国良
韩永吉
沈峰
胡军
付相宇
李森
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中铁十三局集团第三工程有限公司
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Publication of CN103696429A publication Critical patent/CN103696429A/en
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Abstract

The concrete of special-shaped foundation ditch supports the combined support system adding fish belly sill, comprise concrete support and pin-connected panel fish belly sill, shaped steel to supportting, angle brace and middle standing pillar; Wherein, foundation ditch first and third road supports and adopts concrete to support, and second, four roads support and adopt fish belly sill to support; Concrete support is added fish belly sill support and is vertically connected by steel post in foundation ditch, forms three-dimensional system.The concrete of special-shaped foundation ditch supports the construction method adding the combined support system of fish belly sill, after bracing of foundation pit and stand column pile complete, and the support of construction first concrete, lane plate and trestle plate; Reach after requirement until intensity, the position that downward excavation pit supports to second support and fish belly sill, bracket, bracket be installed successively, enclose purlin, angle brace, fish belly sill, finally install support.Advantage of the present invention: ensure that the safety of foundation ditch, rapid construction.Larger working space can be provided, support installation, Demolition Construction speed is fast, be conducive to deformation control of foundation pit.

Description

A kind of concrete of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill
Technical field
The present invention relates to base pit engineering class construction technology, particularly a kind of concrete of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill.
Background technology
Continually developing utilization along with the underground space, constantly toward depth future development, there is a large amount of deep-foundation pit engineering in civil works.In base pit engineering, support system is stablized foundation ditch, construction period and construction costs have very important effect.Current foundation ditch supports and mainly comprises concrete support and bracing members two class, in regular shape foundation ditch, generally adopt steel pipe support, and because stress system is complicated in special-shaped foundation ditch, the general concrete that adopts supports as inner bracing member.But concrete supports exists construction, dismounting speed slowly, and remove noise large, cost consumption is large, and produces a large amount of building waste.Based on this, Korea S engineers and technicians have invented a kind of novel prestressing force fish belly sill supporting form, and are successfully applied in base pit engineering.
By finding prior art retrieval, the structure that existing patent supports fish belly sill and installation are illustrated, and mainly for the foundation ditch in canonical form, the combined support system adding fish belly sill is not supported to the concrete in special-shaped foundation ditch and further study and set forth.
Summary of the invention
The object of the invention is the speed of application and the safety problem that solve special-shaped foundation ditch, the concrete that spy provides a kind of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill.
The concrete that the invention provides a kind of special-shaped foundation ditch supports the combined support system adding fish belly sill, it is characterized in that: the concrete of described special-shaped foundation ditch supports the combined support system adding fish belly sill, comprise concrete support and pin-connected panel fish belly sill, shaped steel to supportting, angle brace and middle standing pillar; Wherein, foundation ditch first and third road supports and adopts concrete to support, and second, four roads support and adopt fish belly sill to support; Concrete support is added fish belly sill support and is vertically connected by steel post in foundation ditch, forms three-dimensional system;
Described first concrete supports and comprises concrete support, trestle plate and lane plate, can provide erect-position and the walking of construction equipment, expand operation side while meeting supporting role;
Described second fish belly sill support comprises fish belly sill, encloses purlin and force transmission element to support, angle brace, Two bors d's oeuveres steel, to support, fish belly sill and angle brace form several closed system in foundation ditch, enclose purlin by steel and prestressing force is passed to space enclosing structure by force transmission element, between each structural member, adopt high-strength bolt to connect; The 3rd described road is supported for concrete and supports; The 4th described road fish belly sill is Two bors d's oeuveres structure, and other are with second fish belly sill structure.
The concrete of special-shaped foundation ditch supports the construction method adding the combined support system of fish belly sill, it is characterized in that: after bracing of foundation pit and stand column pile complete, the support of construction first concrete, lane plate and trestle plate; Reach after requirement until intensity, the position that downward excavation pit supports to second support and fish belly sill, bracket, bracket be installed successively, enclose purlin, angle brace, fish belly sill, finally install support; After a region system is closed, correction is carried out to connecting bolt fastening, jack, steel strand are installed, last Shi Hanzhang, form closed system, support with upper track concrete and jointly bear external loads; Carry out soil excavation afterwards to Xia Dao Support Position, carry out aforesaid operations successively; Treat that structure returns the stage of building, once remove fish belly sill and concrete support from the bottom to top.
Specific construction step is:
Step one: steel post is constructed; Steel post comprises lattice column and two kinds, shaped steel column; Lattice column adopts the lattice column construction of castinplace pile top inserted angle steel and batten plate welding; Shaped steel column adopts high-pressure rotary jet grouting pile to insert the construction of shaped steel method;
Step 2: the support of first concrete, trestle plate and lane plate construction; At construction area construction cushion coat, assembling reinforcement, builds concrete; It is inner that concrete bearing bar is inserted at lattice column top, formed overall;
Step 3: after concrete support, trestle plate and lane plate reach construction intensity in step 2, carry out first floor soil excavation; Earthwork subregion, layering, piecemeal, in limited time excavation, first excavate zone line, then construction and excavation surrounding is near the space enclosing structure soil body;
Step 4: after soil excavation in step 3 to design elevation, construction steel bracket, purlin is enclosed in erection; Enclose purlin and adopt i iron, its connecting portion and overlapping part use frictional high-strength bolts to be fastenedly connected, and lifting is placed on angle-table bracket piecemeal; Enclose purlin system and must guarantee that two Pin or many Pin Steel section member forms entirety, jointly stressed;
Step 5: bracket and brace summer are installed; The installation of bracket part needs strict control its horizontal absolute altitude and verticality, and the installation direction of column and bracket connecting bolt needs to be consistent; Bracket part after installation and shaped steel stand column pile fastening firm, the moment of torsion of frictional high-strength bolts need reach regulation requirement;
Step 6: angle brace is installed; Angle brace carries out on ground pre-splicing and checks the straight degree of support, carries out integral hoisting in place after passed examination by position;
Step 7: fish belly sill is installed; Fish belly sill is installed and is carried out on ground pre-splicing according to design span, and bolton need reach design and code requirement; Pre-splicing complete after integral lifting, two ends are placed in by artificial traction and support on bracket;
Step 8: support is installed; Carry out pre-splicing on ground to support, the strict glacing flatness controlling supporting plane, adopts 4 liftings time in place; Close to corresponding metal mat being used to be close in support connection neutral;
Step 9: force transmission element is installed; Force transmission element fills up groove with successively tired being welded to of welding of the post-install of going along with sb. to guard him and steel structure etc.; Void area between force transmission element is finally tamped with pea gravel concreten is disposable;
Step 10: prestress application, fish belly sill supports and is formed; After each component layout that assembling supports, Shi Hanzhang carries out in the following order: check that whether the connection of each parts bolt is fastening, the connection status of force transmission element and retaining design; To support pressurization; Angle brace pressurizes; Steel strand pressurize; The pressurization supported strictly is undertaken by design axle power; Symmetrical when steel strand are installed, and undertaken by root;
Step 11: repeat lower floor's soil excavation, support erection, form dimensional support system; After above-mentioned assembled support system is formed, by the earthwork of design excavation lower floor, concrete support of constructing successively adds fish belly sill and supports, and forms space multistory support system.
Advantage of the present invention:
The concrete of special-shaped foundation ditch of the present invention supports the combined support system and the construction method that add fish belly sill, concrete is supported and organically combines with fish belly sill support system, give full play to that concrete support strength is high, the large and fireballing feature of fish belly sill Construction of Supporting of rigidity, ensure that the safety of foundation ditch, rapid construction.This support system can provide larger working space, support install, Demolition Construction speed is fast, and can in digging process Shi Hanzhang, be conducive to deformation control of foundation pit.Meanwhile, fish belly sill support system is combined member, and recyclable recycling effectively can reduce engineering cost, meets current energy-saving and emission-reduction national policy, has good popularization and application space.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is concrete supporting plane structural representation;
Fig. 2 is fish belly sill supporting plane structural representation;
Fig. 3 is combined support system sectional drawing.
Detailed description of the invention
Embodiment 1
The concrete present embodiments providing a kind of special-shaped foundation ditch supports the combined support system adding fish belly sill, it is characterized in that: the concrete of described special-shaped foundation ditch supports the combined support system adding fish belly sill, comprise concrete support and pin-connected panel fish belly sill, shaped steel to supportting, angle brace and middle standing pillar; Wherein, foundation ditch first and third road supports and adopts concrete to support, and second, four roads support and adopt fish belly sill to support; Concrete support is added fish belly sill support and is vertically connected by steel post in foundation ditch, forms three-dimensional system;
Described first concrete supports and comprises concrete support, trestle plate and lane plate, can provide erect-position and the walking of construction equipment, expand operation side while meeting supporting role;
Described second fish belly sill support comprises fish belly sill, encloses purlin and force transmission element to support, angle brace, Two bors d's oeuveres steel, to support, fish belly sill and angle brace form several closed system in foundation ditch, enclose purlin by steel and prestressing force is passed to space enclosing structure by force transmission element, between each structural member, adopt high-strength bolt to connect; The 3rd described road is supported for concrete and supports; The 4th described road fish belly sill is Two bors d's oeuveres structure, and other are with second fish belly sill structure.
The concrete of special-shaped foundation ditch supports the construction method adding the combined support system of fish belly sill, it is characterized in that: after bracing of foundation pit and stand column pile complete, the support of construction first concrete, lane plate and trestle plate; Reach after requirement until intensity, the position that downward excavation pit supports to second support and fish belly sill, bracket, bracket be installed successively, enclose purlin, angle brace, fish belly sill, finally install support; After a region system is closed, correction is carried out to connecting bolt fastening, jack, steel strand are installed, last Shi Hanzhang, form closed system, support with upper track concrete and jointly bear external loads; Carry out soil excavation afterwards to Xia Dao Support Position, carry out aforesaid operations successively; Treat that structure returns the stage of building, once remove fish belly sill and concrete support from the bottom to top.
Specific construction step is:
Step one: steel post is constructed; Steel post comprises lattice column and two kinds, shaped steel column; Lattice column adopts the lattice column construction of castinplace pile top inserted angle steel and batten plate welding; Shaped steel column adopts high-pressure rotary jet grouting pile to insert the construction of shaped steel method;
Step 2: the support of first concrete, trestle plate and lane plate construction; At construction area construction cushion coat, assembling reinforcement, builds concrete; It is inner that concrete bearing bar is inserted at lattice column top, formed overall;
Step 3: after concrete support, trestle plate and lane plate reach construction intensity in step 2, carry out first floor soil excavation; Earthwork subregion, layering, piecemeal, in limited time excavation, first excavate zone line, then construction and excavation surrounding is near the space enclosing structure soil body;
Step 4: after soil excavation in step 3 to design elevation, construction steel bracket, purlin is enclosed in erection; Enclose purlin and adopt i iron, its connecting portion and overlapping part use frictional high-strength bolts to be fastenedly connected, and lifting is placed on angle-table bracket piecemeal; Enclose purlin system and must guarantee that two Pin or many Pin Steel section member forms entirety, jointly stressed;
Step 5: bracket and brace summer are installed; The installation of bracket part needs strict control its horizontal absolute altitude and verticality, and the installation direction of column and bracket connecting bolt needs to be consistent; Bracket part after installation and shaped steel stand column pile fastening firm, the moment of torsion of frictional high-strength bolts need reach regulation requirement;
Step 6: angle brace is installed; Angle brace carries out on ground pre-splicing and checks the straight degree of support, carries out integral hoisting in place after passed examination by position;
Step 7: fish belly sill is installed; Fish belly sill is installed and is carried out on ground pre-splicing according to design span, and bolton need reach design and code requirement; Pre-splicing complete after integral lifting, two ends are placed in by artificial traction and support on bracket;
Step 8: support is installed; Carry out pre-splicing on ground to support, the strict glacing flatness controlling supporting plane, adopts 4 liftings time in place; Close to corresponding metal mat being used to be close in support connection neutral;
Step 9: force transmission element is installed; Force transmission element fills up groove with successively tired being welded to of welding of the post-install of going along with sb. to guard him and steel structure etc.; Void area between force transmission element is finally tamped with pea gravel concreten is disposable;
Step 10: prestress application, fish belly sill supports and is formed; After each component layout that assembling supports, Shi Hanzhang carries out in the following order: check that whether the connection of each parts bolt is fastening, the connection status of force transmission element and retaining design; To support pressurization; Angle brace pressurizes; Steel strand pressurize; The pressurization supported strictly is undertaken by design axle power; Symmetrical when steel strand are installed, and undertaken by root;
Step 11: repeat lower floor's soil excavation, support erection, form dimensional support system; After above-mentioned assembled support system is formed, by the earthwork of design excavation lower floor, concrete support of constructing successively adds fish belly sill and supports, and forms space multistory support system.

Claims (2)

1. the concrete of special-shaped foundation ditch supports and adds the combined support system of fish belly sill, it is characterized in that: the concrete of described special-shaped foundation ditch supports the combined support system adding fish belly sill, comprise concrete support and pin-connected panel fish belly sill, shaped steel to supportting, angle brace and middle standing pillar; Wherein, foundation ditch first and third road supports and adopts concrete to support, and second, four roads support and adopt fish belly sill to support; Concrete support is added fish belly sill support and is vertically connected by steel post in foundation ditch, forms three-dimensional system;
Described first concrete supports and comprises concrete support, trestle plate and lane plate, can provide erect-position and the walking of construction equipment, expand operation side while meeting supporting role;
Described second fish belly sill support comprises fish belly sill, encloses purlin and force transmission element to support, angle brace, Two bors d's oeuveres steel, to support, fish belly sill and angle brace form several closed system in foundation ditch, enclose purlin by steel and prestressing force is passed to space enclosing structure by force transmission element, between each structural member, adopt high-strength bolt to connect; The 3rd described road is supported for concrete and supports; The 4th described road fish belly sill is Two bors d's oeuveres structure, and other are with second fish belly sill structure.
2. the concrete of special-shaped foundation ditch supports the construction method adding the combined support system of fish belly sill, it is characterized in that: after bracing of foundation pit and stand column pile complete, the support of construction first concrete, lane plate and trestle plate; Reach after requirement until intensity, the position that downward excavation pit supports to second support and fish belly sill, bracket, bracket be installed successively, enclose purlin, angle brace, fish belly sill, finally install support; After a region system is closed, correction is carried out to connecting bolt fastening, jack, steel strand are installed, last Shi Hanzhang, form closed system, support with upper track concrete and jointly bear external loads; Carry out soil excavation afterwards to Xia Dao Support Position, carry out aforesaid operations successively; Treat that structure returns the stage of building, once remove fish belly sill and concrete support from the bottom to top;
Specific construction step is:
Step one: steel post is constructed; Steel post comprises lattice column and two kinds, shaped steel column; Lattice column adopts the lattice column construction of castinplace pile top inserted angle steel and batten plate welding; Shaped steel column adopts high-pressure rotary jet grouting pile to insert the construction of shaped steel method;
Step 2: the support of first concrete, trestle plate and lane plate construction; At construction area construction cushion coat, assembling reinforcement, builds concrete; It is inner that concrete bearing bar is inserted at lattice column top, formed overall;
Step 3: after concrete support, trestle plate and lane plate reach construction intensity in step 2, carry out first floor soil excavation; Earthwork subregion, layering, piecemeal, in limited time excavation, first excavate zone line, then construction and excavation surrounding is near the space enclosing structure soil body;
Step 4: after soil excavation in step 3 to design elevation, construction steel bracket, purlin is enclosed in erection; Enclose purlin and adopt i iron, its connecting portion and overlapping part use frictional high-strength bolts to be fastenedly connected, and lifting is placed on angle-table bracket piecemeal; Enclose purlin system and must guarantee that two Pin or many Pin Steel section member forms entirety, jointly stressed;
Step 5: bracket and brace summer are installed; The installation of bracket part needs strict control its horizontal absolute altitude and verticality, and the installation direction of column and bracket connecting bolt needs to be consistent; Bracket part after installation and shaped steel stand column pile fastening firm, the moment of torsion of frictional high-strength bolts need reach regulation requirement;
Step 6: angle brace is installed; Angle brace carries out on ground pre-splicing and checks the straight degree of support, carries out integral hoisting in place after passed examination by position;
Step 7: fish belly sill is installed; Fish belly sill is installed and is carried out on ground pre-splicing according to design span, and bolton need reach design and code requirement; Pre-splicing complete after integral lifting, two ends are placed in by artificial traction and support on bracket;
Step 8: support is installed; Carry out pre-splicing on ground to support, the strict glacing flatness controlling supporting plane, adopts 4 liftings time in place; Close to corresponding metal mat being used to be close in support connection neutral;
Step 9: force transmission element is installed; Force transmission element fills up groove with successively tired being welded to of welding of the post-install of going along with sb. to guard him and steel structure etc.; Void area between force transmission element is finally tamped with pea gravel concreten is disposable;
Step 10: prestress application, fish belly sill supports and is formed; After each component layout that assembling supports, Shi Hanzhang carries out in the following order: check that whether the connection of each parts bolt is fastening, the connection status of force transmission element and retaining design; To support pressurization; Angle brace pressurizes; Steel strand pressurize; The pressurization supported strictly is undertaken by design axle power; Symmetrical when steel strand are installed, and undertaken by root;
Step 11: repeat lower floor's soil excavation, support erection, form dimensional support system; After above-mentioned assembled support system is formed, by the earthwork of design excavation lower floor, concrete support of constructing successively adds fish belly sill and supports, and forms space multistory support system.
CN201310643389.7A 2013-12-03 2013-12-03 A kind of concrete of special-shaped foundation ditch supports the combined support system and the construction method that add fish belly sill CN103696429B (en)

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CN104947681B (en) * 2015-07-07 2017-05-10 中建三局第二建设工程有限责任公司 Super large super deep basement ground pit construction method
CN110485429A (en) * 2019-03-21 2019-11-22 安徽省第一建筑工程有限公司 A kind of prestressing force fashioned iron assembled combination inner support construction method

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CN102505696A (en) * 2011-10-28 2012-06-20 上海建瓴工程咨询有限公司 Support system of rear support removing type section steel-concrete double-enclosing-purlin foundation pit and construction method
CN102839675A (en) * 2012-09-25 2012-12-26 上海新强劲工程技术有限公司 Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof
CN203200762U (en) * 2013-01-11 2013-09-18 东南大学 HSW construction method pile foundation pit supporting structure

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