CN108560611A - A kind of basement tilts the float anchor structure after resetting leveling and construction method - Google Patents

A kind of basement tilts the float anchor structure after resetting leveling and construction method Download PDF

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Publication number
CN108560611A
CN108560611A CN201810053359.3A CN201810053359A CN108560611A CN 108560611 A CN108560611 A CN 108560611A CN 201810053359 A CN201810053359 A CN 201810053359A CN 108560611 A CN108560611 A CN 108560611A
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China
Prior art keywords
concrete floor
anchoring pile
reinforcing bar
basement
anchor structure
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CN201810053359.3A
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CN108560611B (en
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吴前昌
刘荣
周欣
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Jiangsu Shanghai Construction Group Co Ltd
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Jiangsu Shanghai Construction Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10Protective 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 soil pressure or hydraulic pressure
    • E02D31/12Protective 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 soil pressure or hydraulic pressure against upward hydraulic pressure

Abstract

The present invention relates to a kind of basements to tilt the float anchor structure after resetting leveling and construction method.The anchor structure is " dry " type anchor structure, anchor structure includes anchoring pile, concrete floor, bed course, the full layer of cement mortar and upper sealing, anchoring pile upper end is fixedly connected with concrete floor, concrete floor lower end is equipped with bed course, it is equipped with cement mortar between bed course and concrete floor and fills layer, concrete floor upper surface is equipped with upper sealing, three anchoring pile reinforcing bars are equipped in anchoring pile, three anchoring pile reinforcing bar upper ends are extend into through concrete floor in sealing, anchor slab is equipped in upper sealing, anchor slab is sleeved on three anchoring pile reinforcing bars.The configuration of the present invention is simple is secured, and reliable in quality, snap-in force is strong, by using the anchor structure and construction method of the present invention, can effectively improve the consolidation effect of the anti-floating of basement, integral strength is high, convenient and quick construction, and construction cost is low.

Description

A kind of basement tilts the float anchor structure after resetting leveling and construction method
Technical field
The present invention relates to a kind of anchor structures more particularly to a kind of basement to tilt the anchor structure after resetting leveling that floats And construction method, belong to construction engineering technical field.
Background technology
In building construction process, because design defect and the composite factors such as heavy rain, working measure be ineffective influence, happen occasionally The quality accident floated is tilted in the architectural engineering basement built.
Usual processing method has:It is rebuild first, abolishing, loss is great;Second is that structural strengthening resets leveling, after-culture anchor pole increases Add structural load, cannot achieve desirable level the disadvantage is that practical situation is bottom plate baseplane and have cavity with bed course, in addition mend It plants anchor pole and builds up that limited space difficulty of construction is big, this reinforcement means mass defect is more, of high cost in basement.
Invention content
In view of the foregoing drawbacks, the purpose of the present invention is to provide a kind of simple and strong in structure, reliable in quality, anti-floating effects Good, integral strength is high, convenient and quick construction, and a kind of low basement of construction cost tilts the anchor structure after resetting leveling that floats And construction method.
The technical solution adopted in the present invention is thus:
The anchor structure be " dry " type anchor structure, anchor structure include anchoring pile, concrete floor, bed course, cement mortar fill Layer and upper sealing, anchoring pile upper end are fixedly connected with concrete floor, and concrete floor lower end is equipped with bed course, bed course and concrete bottom It is equipped with cement mortar between plate and fills layer, concrete floor upper surface is equipped with upper sealing, is equipped with three anchoring pile reinforcing bars in anchoring pile, three Anchoring pile reinforcing bar upper end is extend into through concrete floor in sealing, and anchor slab is equipped in upper sealing, and anchor slab is sleeved on three anchoring pile steel On muscle.
As a further improvement of the above technical scheme, the upper end of three anchoring pile reinforcing bars is equipped with horizontal segment, horizontal segment End be equipped with downward crotch.
As a further improvement of the above technical scheme, several horizontally disposed upper sealing steel are equipped in the upper sealing Muscle.
As a further improvement of the above technical scheme, half " several " type is connected between the upper sealing and concrete floor Hangs muscle, hangs muscle upper end is located in upper sealing, and hangs muscle lower end is located in concrete floor.
As a further improvement of the above technical scheme, the anchoring pile reinforcing bar is connected in series by several unit reinforcing bars, each The length of unit reinforcing bar is less than the height of basement, is connected by branch sleeve between adjacent cells reinforcing bar.
A kind of basement tilts the anchor structure construction method after resetting leveling that floats, and includes the following steps:
The first step taps concrete floor, several windows, the bottom in concrete floor is opened up to concrete floor inanition position Slab muscle is not cut off, and carries out first slip casting to concrete floor inanition position, slurry is modulated by flyash, and first slip casting is complete Cheng Hou uniformly opens up several holes on concrete floor, and lays high-pressure grouting system, to the comprehensive filling in concrete floor lower section High-intensity cement paste is noted, in filling process, carries out basement absolute altitude observation, grouting pressure controls within 280KPa, again Concrete floor is tapped, is confirmed without hollow part, while checking whether basement increases and control within 5mm, basement water Within Pingdu difference of height 1cm, ensure that the hollow position between concrete floor and bed course fills cement mortar;
Second step, anchoring pile are implanted into anchoring pile reinforcing bar, anchoring pile reinforcing bar model HRB400, and anchoring pile bar diameter is 18mm, unit reinforcing bar Length is 3m-4m, and horizontal segment is made in the unit reinforcing bar upper end of the top, and the end of horizontal segment is equipped with downward crotch, if making Dry root hangs muscle, hangs muscle diameter 12mm, hangs muscle shape are half " several " type;
Third walks, and according to the pre-set position of opening of plan view, in-site measurement locating holes carry out anchor pole brill to position of opening Machine drill hole, drilling depth 15m, a diameter of 250mm of anchoring pile;
4th step, anchor slab is horizontally arranged, and three anchoring pile reinforcing bars vertically vertically penetrate on anchor slab in through-hole, and unit reinforcing bar passes through company Sleeve connection is connect, anchor slab is fixed with the top bars spot welding in concrete floor, and the horizontal segment of anchoring pile reinforcing bar is higher than anchor slab 100mm;
5th step carries out cleaning before pouring, place conduit in aperture, pea gravel concreten is slowly injected into hole, pea gravel concreten Intensity is higher than the strength grade of concrete floor, gently vibrates anchoring pile reinforcing bar in irrigation process with jolt ramming pea gravel concreten.
6th step, sealing in laying, several horizontally disposed upper sealing reinforcing bars of setting in upper sealing, upper sealing reinforcing bar are moulded Expect that stirrup plum blossom-shaped erects, guarantee is not subjected to displacement, and anchoring pile hole, the four direction installation one in anchoring pile hole are opened up on concrete floor Root hangs muscle, hangs muscle shape are half " several " type, and hangs muscle lower end straight portion is connect with concrete floor lower layer reinforced bar binding wire binding, is hung Muscle upper end straight portion is connect with the upper sealing reinforced bar binding wire binding in upper sealing;
The concrete of dabbing concrete floor upper surface, concrete floor surface are cleaned out, and casting concrete forms sealing, Upper seal coat thickness is 300mm, and the strength grade of concrete of upper sealing is consistent with anchoring pile strength grade.
It is an advantage of the invention that:
The configuration of the present invention is simple is secured, and reliable in quality, snap-in force is strong, by using the present invention anchor structure and construction method, The consolidation effect of the anti-floating of basement can be effectively improved, integral strength is high, convenient and quick construction, and construction cost is low.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
In figure 1 be anchoring pile, 2 be concrete floor, 3 be bed course, 4 be cement mortar fill layer, 5 be upper sealing, 6 be anchoring pile steel Muscle, 7 be anchor slab, 8 be upper sealing reinforcing bar, 9 be hangs muscle, 10 be branch sleeve.
Specific implementation mode
A kind of basement tilts the anchor structure after resetting leveling that floats, and the anchor structure is " dry " type anchor structure, Anchor structure includes anchoring pile 1, concrete floor 2, bed course 3, the full layer 4 of cement mortar and upper sealing 5,1 upper end of anchoring pile and concrete Bottom plate 2 is fixedly connected, and 2 lower end of concrete floor is equipped with bed course 3, and cement mortar is equipped between bed course 3 and concrete floor 2 and fills layer 4,2 upper surface of concrete floor is equipped with upper sealing 5, is equipped with three anchoring pile reinforcing bars 6 in anchoring pile 1, three 6 upper ends of anchoring pile reinforcing bar are run through Concrete floor 2 is extend into sealing 5, and anchor slab 7 is equipped in upper sealing 5, and anchor slab 7 is sleeved on three anchoring pile reinforcing bars 6.
As a further improvement of the above technical scheme, the upper end of three anchoring pile reinforcing bars 6 is equipped with horizontal segment, horizontal segment End be equipped with downward crotch.
As a further improvement of the above technical scheme, several horizontally disposed upper sealing steel are equipped in the upper sealing 5 Muscle 8.
As a further improvement of the above technical scheme, it is connected between the upper sealing 5 and concrete floor 2 half " several " The hangs muscle 9 of type, 9 upper end of hangs muscle are located in upper sealing 5, and 9 lower end of hangs muscle is located in concrete floor 2.
As a further improvement of the above technical scheme, the anchoring pile reinforcing bar 6 is connected in series by several unit reinforcing bars, each The length of unit reinforcing bar is less than the height of basement, is connected by branch sleeve 10 between adjacent cells reinforcing bar.
A kind of basement tilts the anchor structure construction method after resetting leveling that floats, and includes the following steps:
The first step taps concrete floor, several windows, the bottom in concrete floor is opened up to concrete floor inanition position Slab muscle is not cut off, and carries out first slip casting to concrete floor inanition position, slurry is modulated by flyash, and first slip casting is complete Cheng Hou uniformly opens up several holes on concrete floor, and lays high-pressure grouting system, to the comprehensive filling in concrete floor lower section High-intensity cement paste is noted, in filling process, carries out basement absolute altitude observation, grouting pressure controls within 280KPa, again Concrete floor is tapped, is confirmed without hollow part, while checking whether basement increases and control within 5mm, basement water Within Pingdu difference of height 1cm, ensure that the hollow position between concrete floor and bed course fills cement mortar;
Second step, anchoring pile are implanted into anchoring pile reinforcing bar, anchoring pile reinforcing bar model HRB400, and anchoring pile bar diameter is 18mm, unit reinforcing bar Length is 3m-4m, and horizontal segment is made in the unit reinforcing bar upper end of the top, and the end of horizontal segment is equipped with downward crotch, if making Dry root hangs muscle, hangs muscle diameter 12mm, hangs muscle shape are half " several " type;
Third walks, and according to the pre-set position of opening of plan view, in-site measurement locating holes carry out anchor pole brill to position of opening Machine drill hole, drilling depth 15m, a diameter of 250mm of anchoring pile;
4th step, anchor slab is horizontally arranged, and three anchoring pile reinforcing bars vertically vertically penetrate on anchor slab in through-hole, and unit reinforcing bar passes through company Sleeve connection is connect, anchor slab is fixed with the top bars spot welding in concrete floor, and the horizontal segment of anchoring pile reinforcing bar is higher than anchor slab 100mm;
5th step carries out cleaning before pouring, place conduit in aperture, pea gravel concreten is slowly injected into hole, pea gravel concreten Intensity is higher than the strength grade of concrete floor, gently vibrates anchoring pile reinforcing bar in irrigation process with jolt ramming pea gravel concreten.
6th step, sealing in laying, several horizontally disposed upper sealing reinforcing bars of setting in upper sealing, upper sealing reinforcing bar are moulded Expect that stirrup plum blossom-shaped erects, guarantee is not subjected to displacement, and anchoring pile hole, the four direction installation one in anchoring pile hole are opened up on concrete floor Root hangs muscle, hangs muscle shape are half " several " type, and hangs muscle lower end straight portion is connect with concrete floor lower layer reinforced bar binding wire binding, is hung Muscle upper end straight portion is connect with the upper sealing reinforced bar binding wire binding in upper sealing;
The concrete of dabbing concrete floor upper surface, concrete floor surface are cleaned out, and casting concrete forms sealing, Upper seal coat thickness is 300mm, and the strength grade of concrete of upper sealing is consistent with anchoring pile strength grade.
Embodiment 1
Certain engineering basement one, two layers on the ground, frame structure, about 2100 square metres of single story building area, floor height 4.5m, basis is Beams of concrete under column, 400mm thickness concrete floors, engineering is when construction is to a layer main body structure, because underground occurs in heavy rain day after day Room, which tilts, floats.
Implementation steps are as follows:
Precipitation position, construction structure surrounding light well point lowering of watertable.
Leveling is resetted, reset leveling is carried out to former project under construction.
Bottom plate is tapped, several windows are opened to hollow position, baseplate reinforcing bar is not cut off, and it is just fixed to be carried out to apparent hollow position Slip casting, slurry are that flyash is modulated, and after first slip casting, are opened in bottom plate and are uniformly distributed trepanning 80, hole 500*500mm, applied If high-pressure grouting system, to bottom plate under comprehensive perfusion high-intensity cement paste, in filling process, carry out basement absolute altitude observation, Meeting to increase suddenly should stop being in the milk, and check that reason, grouting pressure control within 280kPa, meanwhile, in filling process, answer room It inside carries out and is uniformly laid with the loads such as sand pocket.
It checks again for tapping bottom plate, confirm without hollow position, while checking that basement slightly increases, and control within 5mm, Within basement levelness difference of height 1cm, ensure that board bottom fills cement mortar with the hollow part of bed course.
Anchoring pile reinforcement fabrication:Anchoring pile, which is implanted into reinforcing bar selection, matches HRB400, bar diameter 18mm, and often section is not less than 3m, and No more than 4m(Consider that vertical floor height is limited), for final section reinforcement fabrication at straight crotch again, straight portion is not less than 12d, system Make several hangs muscle 12mm, shape is half " several " type, makes 10 two-way concrete slab of a number of diameter.
Pore-forming:According to the pre-set position of opening of plan view, in-site measurement locating holes are split within error 10mm Hole position carries out jumbolter drilling, and drill effective depth 15m, anchoring pile diameter 250mm.
When jumbolter drills, casing synchronizes, and pore-forming takes pipe-following drilling, air compressor machine pressure-air to carry out deslagging, reach After projected depth, continue brill 1~2 minute, quality in site person carries out hole depth measurement, it is ensured that effective depth and grouting are abundant, simultaneously It is required that anchor hole gradient is less than the 1% of effective length.
Put muscle:First advance triangular anchor plate level is placed, 3 HRB400 reinforcing bars vertically should vertically penetrate triangle anchor slab Sleeve connection is taken in hole, often section connection, and when connection needs holder and fixture to stablize tightly to the reinforcing bar of placement, triangle anchor slab and bottom Plate top bars spot welding is fixed, and vertical reinforcement final section flat segments are higher than triangle anchor slab 100mm.
It pours:Cleaning is carried out before pouring, removes reinforcing bar sludge, places conduit in aperture, pea gravel concreten is slowly injected into In hole, concrete strength is higher than one strength grade of former underplate concrete, gently vibrates anchoring pile reinforcing bar in irrigation process with jolt ramming Pea gravel concreten ensures that the groundwater increment of concrete is not less than theoretical calculation volume.
Every anchoring pile is poured to former bottom plate bottom surface horizontal position.
Upper sealing construction:Upper sealing is designed as 300mm thicker strip reinforced concretes.
Match reinforcing bar, double-deck, two-way laying, installation, binding in laying in sealing, reinforcing bar is erected with plastics stirrup plum blossom-shaped, Guarantee is not subjected to displacement.One anchoring pile hole four direction places a hangs muscle, hangs muscle lower end is straight position and former bottom plate lower layer steel The binding connection of muscle tied silk, hangs muscle upper end straight portion are connect in upper sealing with upper layer reinforced bar binding wire binding.
Dabbing original plate upper surface concrete, pours upper sealing concrete in former base surface, and backplate surface is cleaned out, Thickness 300mm is poured, strength grade of concrete smoothes out to form integral planar with anchoring pile strength grade, magma machinery, original design ground Be always or usually as specified concrete leveling floor, face floor of lower room omits, and is replaced by upper sealing, basic realize does not change former designed elevation and use space Highly.
So far, anchoring pile, full layer, upper sealing form an anchor structure system, and system is interconnected, to basement bottom board Structure bites power is strong, while anchoring pile is formed with original place matter soil and rubbed, and is effectively prevented from and is floated again.
Embodiment 2
Certain company's Industrial Plant, frame structure, basement one, six layers, floor height 4.60m on the ground, ground around the foundation pit of basement It is medium weathering argillaceous siltstoue, water penetration is poor, when construction to two layers of structure, not because of construction seasons rainwater, working measure Power, a large amount of insulated streams enter foundation pit, and buoyancy, which is more than basement structure dead weight and former design Pulling-Resistant Anchor Rod power, to be occurred tilting floating.
This engineering construction scheme is:The anchor structure for taking bis- " dry " type connection piled anchor fixing structures to be combined with single " dry " type, Alternate arrangement is implemented 1 similarities and differences with case now and is described below:
Connection piled anchor fixing structure bottom plate bore size is 750*500mm, jumbolter bore diameter 250mm, effective depth 16m, two Hole is in parallel, is placed centrally reinforcing bar four HRB400 respectively per hole, diameter 16mm, end reinforcing bar straight portion respectively with bottom plate upper layer Reinforcing bar single welding or welding by both sides.
Synthesis illustrates reasonable design of the present invention, and sound construction, reliable in quality, anti-floating consolidation effect is good, and globality is strong, construction Convenient and efficient, cost is relatively low.

Claims (6)

1. a kind of basement tilts the anchor structure after resetting leveling that floats, which is characterized in that the anchor structure is " dry " type Anchor structure, anchor structure include anchoring pile, concrete floor, bed course, the full layer of cement mortar and upper sealing, anchoring pile upper end and coagulation Native bottom plate is fixedly connected, and concrete floor lower end is equipped with bed course, and cement mortar is equipped between bed course and concrete floor and fills layer, is mixed Solidifying soil bottom plate upper surface is equipped with upper sealing, and three anchoring pile reinforcing bars are equipped in anchoring pile, and concrete bottom is run through in three anchoring pile reinforcing bar upper ends Plate is extend into sealing, and anchor slab is equipped in upper sealing, and anchor slab is sleeved on three anchoring pile reinforcing bars.
2. a kind of basement according to claim 2 tilts the anchor structure after resetting leveling that floats, which is characterized in that institute The upper end for stating three anchoring pile reinforcing bars is equipped with horizontal segment, and the end of horizontal segment is equipped with downward crotch.
3. a kind of basement according to claim 3 tilts the anchor structure after resetting leveling that floats, which is characterized in that institute It states and is equipped with several horizontally disposed upper sealing reinforcing bars in sealing.
4. a kind of basement according to claim 4 tilts the anchor structure after resetting leveling that floats, which is characterized in that institute The hangs muscle that half " several " type is connected between sealing and concrete floor is stated, hangs muscle upper end is located in upper sealing, hangs muscle lower end position In in concrete floor.
5. a kind of basement according to claim 5 tilts the anchor structure after resetting leveling that floats, which is characterized in that institute It states anchoring pile reinforcing bar to be connected in series by several unit reinforcing bars, the length of each unit reinforcing bar is less than the height of basement, adjacent cells It is connected by branch sleeve between reinforcing bar.
6. a kind of basement described in manufacturing claims 5 tilts the construction method for the anchor structure after resetting leveling that floats, It is characterized in that, includes the following steps:
The first step taps concrete floor, several windows, the bottom in concrete floor is opened up to concrete floor inanition position Slab muscle is not cut off, and carries out first slip casting to concrete floor inanition position, slurry is modulated by flyash, and first slip casting is complete Cheng Hou uniformly opens up several holes on concrete floor, and lays high-pressure grouting system, to the comprehensive filling in concrete floor lower section High-intensity cement paste is noted, in filling process, carries out basement absolute altitude observation, grouting pressure controls within 280KPa, again Concrete floor is tapped, is confirmed without hollow part, while checking whether basement increases and control within 5mm, basement water Within Pingdu difference of height 1cm, ensure that the hollow position between concrete floor and bed course fills cement mortar;
Second step, anchoring pile are implanted into anchoring pile reinforcing bar, anchoring pile reinforcing bar model HRB400, and anchoring pile bar diameter is 18mm, unit reinforcing bar Length is 3m-4m, and horizontal segment is made in the unit reinforcing bar upper end of the top, and the end of horizontal segment is equipped with downward crotch, if making Dry root hangs muscle, hangs muscle diameter 12mm, hangs muscle shape are half " several " type;
Third walks, and according to the pre-set position of opening of plan view, in-site measurement locating holes carry out anchor pole brill to position of opening Machine drill hole, drilling depth 15m, a diameter of 250mm of anchoring pile;
4th step, anchor slab is horizontally arranged, and three anchoring pile reinforcing bars vertically vertically penetrate on anchor slab in through-hole, and unit reinforcing bar passes through company Sleeve connection is connect, anchor slab is fixed with the top bars spot welding in concrete floor, and the horizontal segment of anchoring pile reinforcing bar is higher than anchor slab 100mm;
5th step carries out cleaning before pouring, place conduit in aperture, pea gravel concreten is slowly injected into hole, pea gravel concreten Intensity is higher than the strength grade of concrete floor, gently vibrates anchoring pile reinforcing bar in irrigation process with jolt ramming pea gravel concreten;
6th step, sealing in laying, several horizontally disposed upper sealing reinforcing bars of setting in upper sealing, upper sealing reinforcing bar is with plastics horse Plum blossom-shaped erection is pedaled, guarantee is not subjected to displacement, and anchoring pile hole is opened up on concrete floor, and the four direction in anchoring pile hole is installed one and hung Muscle, hangs muscle shape are half " several " type, and hangs muscle lower end straight portion is connect with concrete floor lower layer reinforced bar binding wire binding, in hangs muscle End straight portion is connect with the upper sealing reinforced bar binding wire binding in upper sealing;
The concrete of dabbing concrete floor upper surface, concrete floor surface are cleaned out, and casting concrete forms sealing, Upper seal coat thickness is 300mm, and the strength grade of concrete of upper sealing is consistent with anchoring pile strength grade.
CN201810053359.3A 2018-01-19 2018-01-19 Anchoring structure for basement after inclined floating, resetting and leveling and construction method Active CN108560611B (en)

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