CN206971246U - Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum - Google Patents

Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum Download PDF

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Publication number
CN206971246U
CN206971246U CN201720821079.3U CN201720821079U CN206971246U CN 206971246 U CN206971246 U CN 206971246U CN 201720821079 U CN201720821079 U CN 201720821079U CN 206971246 U CN206971246 U CN 206971246U
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foundation
stratum
layer
pile
concrete
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Inventor
黄明
邓涛
上官兴
江松
王元清
胡家玲
刘秋江
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Fuzhou University
Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
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Fuzhou University
Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
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Abstract

It the utility model is related to a kind of more pier stud bridge pile foundations suitable for shaped corroded cave model stratum, it is characterised in that:In the foundation ditch of cone bucket shape and the cofferdam being spliced to form in every layer of foundation ditch by corrugated steel is located at including multilayer, cement mortar is perfused between the foundation ditch and cofferdam, the wherein substrate paving guanovulite layer of basecoat foundation ditch, the boulder bed is provided with and pours concrete layer, the concrete layer of pouring is provided with concrete hollow pile foundation, and bridge pier is provided with above the concrete hollow pile foundation.The utility model avoids all kinds of diseases that pile body passes through solution cavity induction by force suitable for more pier stud bridge pile foundation work progress on shaped corroded cave model stratum, efficiently solve the Construction Problems of complex karst area bridge pile foundation, also construction period is substantially reduced, reduces construction cost.

Description

Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum
Technical field:
It the utility model is related to a kind of more pier stud bridge pile foundations suitable for shaped corroded cave model stratum.
Background technology:
Progress bridge pile foundation construction difficulty is huge in shaped corroded cave model stratum, and particularly bridge pile foundation is easily molten to underliing Hole produces disturbance, therefore formulation or adjustment after repeatedly the shaped corroded cave model that underlies is carried out advanced exploration, surveyed in detail are needed in work progress Bridge pile foundation structure, so as to cause construction period to extend, cost increase, and all kinds of diseases are induced when being also easy to pass through solution cavity.
The content of the invention:
The purpose of this utility model is to provide a kind of more pier stud bridge pile foundations suitable for shaped corroded cave model stratum, and this is suitable More pier stud bridge pile foundations for shaped corroded cave model stratum are simple in construction, reasonable in design, efficiently solve complex karst area bridge The Construction Problems of beam pile foundation.
The utility model is applied to more pier stud bridge pile foundations on shaped corroded cave model stratum, it is characterised in that:It is in including multilayer The foundation ditch of cone bucket shape and the cofferdam being spliced to form by corrugated steel in every layer of foundation ditch is located at, water is perfused between the foundation ditch and cofferdam The substrate paving guanovulite layer of mud, wherein basecoat foundation ditch, the boulder bed are provided with and pour concrete layer, and the concrete layer of pouring is provided with Concrete hollow pile foundation, the concrete hollow pile foundation top are provided with bridge pier.
Further, the hollow part side wall of above-mentioned concrete hollow pile foundation is corrugated steel internal model.
Further, the top of above-mentioned concrete hollow pile foundation is provided with girder and secondary beam, and the girder is located at reinforced concrete sky The long side direction of heart pile foundation, the secondary beam are located at the short side direction of concrete hollow pile foundation, are provided with above the girder and secondary beam Top plate.
Further, above-mentioned bridge pier is two, three, four or five.
Further, above-mentioned top plate is provided with work hole.
Further, above-mentioned concrete hollow pile foundation cross section is made up of two equal diameter semicircles and a rectangle, overall In " 0 " type;To be hollow inside pile body, so that pile foundation is in itself and the gross weight of superstructure is no more than or few exceedes the soil excavated Weight.
The utility model is applied to the method for construction of more pier stud bridge pile foundations on shaped corroded cave model stratum, described to be applied to string More pier stud bridge pile foundations of pearl Karst Cave Formation include the foundation ditch that multilayer is in cone bucket shape and are located in every layer of foundation ditch to be spelled by corrugated steel The cofferdam to be formed is connect, the substrate paving guanovulite layer of cement mortar, wherein basecoat foundation ditch is perfused between the foundation ditch and cofferdam, The boulder bed, which is provided with, pours concrete layer, and the concrete layer of pouring is provided with concrete hollow pile foundation, the concrete hollow pile foundation top Provided with bridge pier;
During construction, (1) smooth location, first layer foundation ditch is excavated using mini-excavator, sets sump to be taken out in hole Water is constructed;
(2) loop wheel machine assembly curved surface waveform steel disc is used, first section major diameter vertical duct is formed, sets up scaffold, use bolt Upper and lower layer waveform steel is linked to be entirety, the special glue hermetic seal of seam, completes ripple steel cofferdam external mold;
(3) madjack pipe is disposed on the outside of waveform steel external mold, the particle diameter cobble such as backfill between first layer foundation ditch and cofferdam Afterwards, cement mortar is reinjected, forms waveform steel slip casting concrete cofferdam;
(4) drawn water in cofferdam, excavate second layer foundation ditch, then lay the second layer corrugated steel that diameter reduces one-level earlier above External mold, the up big and down small tapered variable diameters corrugated steel concrete cofferdam of multilayer is completed with same construction method;
(5) after completing multilayer reducing waveform steel concrete cofferdam, the particle diameter cobble such as 1m thickness is filled out in basecoat foundation ditch substrate paving Layer, inserts madjack pipe wherein;
(6) discharged water in cofferdam, pour the formation of Underwater Concrete back cover and pour concrete layer;
(7) drawn water after curing period, the hollow pile foundation reinforcing bar of assembling reinforcement concrete in cofferdam, corrugated steel internal model is installed, from lower Higher slice completes bottom, the hollow pile foundation of middle part reinforced concrete;
(8) primary and secondary beam slab mould is installed, colligation primary-secondary beam, roof steel bar, completes concrete hollow pile foundation top.
(9) bridge pier is completed in concrete hollow pile foundation, the slip casting in hollow pile.
More pier stud bridge pile foundations that the utility model is applied to shaped corroded cave model stratum absorb compensated foundation, friction pile groups And the advantages of pier foundation, for the karst area Short/Medium Span Bridge pile foundation with certain overburden cover, take full advantage of The bearing capacity of upper overburden layer, stake bottom reduce the disturbance to the solution cavity that underlies using rock is not entered, after advanced exploration obtains solution cavity buried depth Just need not continue to underlie the surveying in detail of shaped corroded cave model, and all kinds of diseases that pile body passes through solution cavity induction by force are avoided in work progress Evil, efficiently solves the Construction Problems of complex karst area bridge pile foundation, also substantially reduces construction period, reduce and be constructed into This.
Brief description of the drawings:
Fig. 1 is the profile schematic diagram of first layer excavation of foundation pit;
Fig. 2 is the profile schematic diagram of first layer foundation ditch cofferdam external mold;
Fig. 3 is the profile schematic diagram of grout injection between first layer foundation ditch and cofferdam;
Fig. 4 is to excavate first layer foundation ditch and the profile schematic diagram in cofferdam;
Fig. 5 is the profile schematic diagram of basecoat foundation ditch substrate paving guanovulite layer;
Fig. 6 is to pour to form the profile schematic diagram for pouring concrete layer;
Fig. 7 is the profile schematic diagram that hollow pile base is built in foundation ditch;
Fig. 8 is the profile schematic diagram for building primary-secondary beam and top plate;
Fig. 9 is that the utility model completes the profile schematic diagram after bridge pier;
Figure 10 is Fig. 9 top view;
Figure 11 is Fig. 9 left view;
Figure 12 is the profile of Fig. 9 another kind embodiments;
Figure 13 is Figure 12 top view.
Embodiment:
The utility model method is described in further detail with reference to embodiment.It should be strongly noted that this The protection domain of utility model should include but is not limited to the technology contents disclosed in the present embodiment.
More pier stud bridge pile foundations that the utility model is applied to shaped corroded cave model stratum include the foundation ditch 1 that multilayer is in cone bucket shape Be located at the cofferdam 3 that is spliced to form by corrugated steel 2 in every layer of foundation ditch 1, be perfused with cement mortar 4 between the foundation ditch 1 and cofferdam 3, The wherein substrate paving guanovulite layer 5 of basecoat foundation ditch, the boulder bed is provided with and pours concrete layer 6, and the concrete layer 6 of pouring is provided with steel The hollow pile foundation 7 of muscle concrete, the top of concrete hollow pile foundation 7 are provided with bridge pier 8.
Further, in order to reasonable in design, construction stability is reliable, and the hollow part side wall 9 of above-mentioned concrete hollow pile foundation is Corrugated steel internal model.
Further, in order to increase support strength, the top of above-mentioned concrete hollow pile foundation is provided with girder 10 and secondary beam 11, The girder 10 is located at the long side direction of concrete hollow pile foundation, and the secondary beam is located at the short side direction of concrete hollow pile foundation, The top of girder 10 and secondary beam 11 is provided with top plate 12.
Further, in order to reasonable in design, above-mentioned bridge pier is two, three, four or five.
Further, for the ease of checking or overhauling, above-mentioned top plate is provided with work hole 13.
Further, above-mentioned concrete hollow pile foundation cross section is made up of two equal diameter semicircles and a rectangle(Such as figure Shown in 10), overall is in " 0 " type;To be hollow inside pile body, so that pile foundation is in itself and the gross weight of superstructure is no more than or surpassed less Cross the soil weight excavated.
The utility model is applied to the method for construction of more pier stud bridge pile foundations on shaped corroded cave model stratum, described to be applied to string More pier stud bridge pile foundations of pearl Karst Cave Formation include multilayer in the foundation ditch 1 of cone bucket shape and are located in every layer of foundation ditch 1 by corrugated steel 2 The cofferdam 3 being spliced to form, is perfused with cement mortar 4 between the foundation ditch 1 and cofferdam 3, the substrate paving of wherein basecoat foundation ditch is filled out Boulder bed 5, the boulder bed, which is provided with, pours concrete layer 6, and the concrete layer 6 of pouring is provided with concrete hollow pile foundation 7, and the reinforced concrete is empty The top of heart pile foundation 7 is provided with bridge pier 8;
During construction, (1) smooth location, first layer foundation ditch is excavated using mini-excavator, sets sump to be taken out in hole Water is constructed, as shown in Figure 1;
(2) loop wheel machine assembly curved surface waveform steel disc is used, first section major diameter vertical duct is formed, sets up scaffold, use bolt Upper and lower layer waveform steel is linked to be entirety, the special glue hermetic seal of seam, completes ripple steel cofferdam external mold, as shown in Figure 2;
(3) madjack pipe is disposed on the outside of waveform steel external mold, the particle diameter cobble such as backfill between first layer foundation ditch and cofferdam Afterwards, cement mortar is reinjected, forms waveform steel slip casting concrete cofferdam, as shown in Figure 3;
(4) drawn water in cofferdam, excavate second layer foundation ditch, then lay the second layer corrugated steel that diameter reduces one-level earlier above External mold, the up big and down small tapered variable diameters corrugated steel concrete cofferdam of multilayer is completed with same construction method, as shown in Figure 4;
(5) after completing multilayer reducing waveform steel concrete cofferdam, the particle diameter cobble such as 1m thickness is filled out in basecoat foundation ditch substrate paving Layer, inserts madjack pipe, as shown in Figure 5 wherein;
(6) discharged water in cofferdam, pour the formation of Underwater Concrete back cover and pour concrete layer, as shown in Figure 6;
(7) drawn water after curing period, the hollow pile foundation reinforcing bar of assembling reinforcement concrete in cofferdam, corrugated steel internal model is installed, from lower Higher slice completes bottom, the hollow pile foundation of middle part reinforced concrete, as shown in Figure 7;
(8) primary and secondary beam slab mould is installed, colligation primary-secondary beam, roof steel bar, concrete hollow pile foundation top is completed, such as Fig. 8 institutes Show.
(9) bridge pier is completed in concrete hollow pile foundation, the slip casting in hollow pile, as shown in Figure 9.
More pier stud bridge pile foundations that the utility model is applied to shaped corroded cave model stratum absorb compensated foundation, friction pile groups And the advantages of pier foundation, for the karst area Short/Medium Span Bridge pile foundation with certain overburden cover, take full advantage of The bearing capacity of upper overburden layer, stake bottom reduce the disturbance to the solution cavity that underlies using rock is not entered, after advanced exploration obtains solution cavity buried depth Just need not continue to underlie the surveying in detail of shaped corroded cave model, and all kinds of diseases that pile body passes through solution cavity induction by force are avoided in work progress Evil, efficiently solves the Construction Problems of complex karst area bridge pile foundation, also substantially reduces construction period, reduce and be constructed into This.
The foregoing is only preferred embodiment of the present utility model, it is all done according to present utility model application the scope of the claims it is equal Deng change and modification, it should all belong to covering scope of the present utility model.

Claims (6)

  1. A kind of 1. more pier stud bridge pile foundations suitable for shaped corroded cave model stratum, it is characterised in that:Including multilayer in cone bucket shape Foundation ditch and the cofferdam being spliced to form by corrugated steel in every layer of foundation ditch is located at, cement mortar is perfused between the foundation ditch and cofferdam, its The substrate paving guanovulite layer of middle basecoat foundation ditch, the boulder bed are provided with and pour concrete layer, and the concrete layer of pouring is provided with reinforced concrete Hollow pile foundation, the concrete hollow pile foundation top are provided with bridge pier.
  2. 2. more pier stud bridge pile foundations according to claim 1 suitable for shaped corroded cave model stratum, it is characterised in that:It is described The hollow part side wall of concrete hollow pile foundation is corrugated steel internal model.
  3. 3. more pier stud bridge pile foundations according to claim 1 suitable for shaped corroded cave model stratum, it is characterised in that:It is described The top of concrete hollow pile foundation is provided with girder and secondary beam, and the girder is located at the long side direction of concrete hollow pile foundation, described Secondary beam is located at the short side direction of concrete hollow pile foundation, and top plate is provided with above the girder and secondary beam.
  4. 4. more pier stud bridge pile foundations according to claim 1 suitable for shaped corroded cave model stratum, it is characterised in that:It is described Bridge pier is two, three, four or five.
  5. 5. more pier stud bridge pile foundations according to claim 3 suitable for shaped corroded cave model stratum, it is characterised in that:It is described Top plate is provided with work hole.
  6. 6. more pier stud bridge pile foundations according to claim 1 suitable for shaped corroded cave model stratum, it is characterised in that:It is described Concrete hollow pile foundation cross section is made up of two equal diameter semicircles and a rectangle, and overall is in " 0 " type;It is sky inside pile body The heart, so that pile foundation is in itself and the gross weight of superstructure is no more than or few exceedes the soil weight excavated.
CN201720821079.3U 2017-07-08 2017-07-08 Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum Active CN206971246U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720821079.3U CN206971246U (en) 2017-07-08 2017-07-08 Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720821079.3U CN206971246U (en) 2017-07-08 2017-07-08 Suitable for more pier stud bridge pile foundations on shaped corroded cave model stratum

Publications (1)

Publication Number Publication Date
CN206971246U true CN206971246U (en) 2018-02-06

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