CN208604438U - The high embankment retaining structure in soft clay area - Google Patents

The high embankment retaining structure in soft clay area Download PDF

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Publication number
CN208604438U
CN208604438U CN201820926054.4U CN201820926054U CN208604438U CN 208604438 U CN208604438 U CN 208604438U CN 201820926054 U CN201820926054 U CN 201820926054U CN 208604438 U CN208604438 U CN 208604438U
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reinforced concrete
prefabricated board
construction
pile
linking
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沈习文
王丽君
颜洪刚
宋书志
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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Abstract

The utility model relates to the high embankments construction fields in soft clay area, it is especially a kind of to reduce high embankment area occupied, reduce high post-construction settlement, reduce project cost, reduce the construction period, realize modularization, the high embankment retaining structure in the soft clay area of pipelining, including the C30 reinforced concrete prefabricated board being arranged in pairs, roadbed filling and tension anchor rod are provided between the C30 reinforced concrete prefabricated board, drain hole is provided on the C30 reinforced concrete prefabricated board, C30 reinforced concrete prefabricated board bottom is set in the groove of linking beam, two layers of High-strength composite geotextile fabric is provided between linking beam, coarse sand bed course is set between two layers of High-strength composite geotextile fabric, each linking beam bottom is provided with miniature pile group.The advantages that the utility model speed of application is fast, and construction efficiency is high, and the construction period is short, and project cost is relatively low, and the deformation of filled-up ground settlement after construction is small, is particularly suitable among Freeway in Soft Soil Area or the high embankments construction of high-grade highway.

Description

The high embankment retaining structure in soft clay area
Technical field
The utility model relates to the high embankments construction field in soft clay area, especially a kind of high embankment supporting and retaining system knot in soft clay area Structure.
Background technique
Soft clay area Soft Soil Layer is deep, and for weak soil in plastic~stream modeling shape, foundation bearing capacity is low.High speed is built using slope method When highway or the high embankment of high-grade highway, the high post-construction settlement time is long, and settlement after construction deformation is big.It should when being passed through using bridge When section, cost is high, and the construction period is long.When building the high embankment in soft clay area using plate between friction pile+stake, friction pile cost Higher, the construction period is longer, and is not suitable for mud and silt soil region.
(weak foundation soil high embankment assembled in paraplain area is built for the existing paper published and utility model patent Method and device) (103821071 B of Authorization Notice No. CN) be related to a kind of high embankment in paraplain area of weak foundation soil distribution Process for constructing, in particular to be a kind of high embankment assembled process for constructing of paraplain area weak foundation soil and device.Technology Scheme is as follows: (1) prefabricated breast boards and soil blocking pile;(2) drawknot rope size and anchorage model are determined;(3) determine what embankment was built Take up an area range;(4) cleaning vegetation and cultivated plant soil layer, determine the coordinate position of embankment two sides soil blocking pile;(5) beat or be pressed into earth-retaining Stake;(6) drawknot rope and anchorage are assembled;(7) block-by-block that faces upward certainly assembles breast boards, and two sides breast boards is symmetrically assembled, filled out simultaneously Embankment fill material and grinding compacting are built, until embankment top surface;(8) anchorage bolt is adjusted in real time;(9) step (5) to (8) are repeated; (10) whole tune is carried out to anchorage bolt;(11) high embankment is built into rear, appropriate standing.This method presses the prefabricated gear of depth of fill Native stake, then soil blocking pile is beaten or is pressed into, stake is long relatively large, and soil blocking pile cost is relatively high.And need the block-by-block assembly that faces upward certainly Breast boards, working procedure is more complex, and the construction period is longer.
The existing paper published and utility model patent (ruggedized construction of the deep earthen foundation of high-speed railway) (authorization 202466342 U of notification number CN) it is related to one kind and is related to the deep earthen foundation field of high-speed railway more particularly to a kind of high-speed iron The ruggedized construction of the deep earthen foundation in road.Technical solution is as follows: including in reinforced concrete thin plate and the deep earthen foundation of injection More pile bases, the top anchor of reinforced concrete thin plate and pile foundation connects.The slope construction Gao Lu on reinforced concrete thin plate Dike.For this method by slope is designed than slope heap raising embankment on reinforced concrete thin plate, Gao Ludi area occupied is larger.Injection Pile foundation quantity in deep earthen foundation is more, and project cost is relatively high.
The existing paper published and utility model patent (cover the high roadbed reclamation sidewise restraint of soft soil foundation on basement rock Reinforcing construction) (204325837 U of Authorization Notice No. CN) be related to geotechnical engineering, in particular to soft soil foundation is covered on a kind of basement rock High roadbed reclamation sidewise restraint reinforcing construction.Technical solution is as follows: being included in longitudinal gap under the slope foot of embankment two sides and symmetrically sets Left side reinforced concrete bored pile, right side reinforced concrete bored pile are set, stake top is respectively set and left side reinforcing bar Concrete drilling bored concrete pile, right side reinforced concrete bored pile consolidate the left side armored concrete crown beam being integrated, right side Armored concrete crown beam is set between left side armored concrete crown beam, right side armored concrete crown beam along embankment extending direction interval Set the anchor cable that anchor connection therewith is distinguished at its both ends.This method is suitable for Deep Thick Soft Ground Area, and by design slope than slope heap Raising embankment, Gao Ludi area occupied are larger.
The existing paper published and a kind of utility model patent (miniature pilework of inclination arrangement) (application publication number 105804100 A of CN) it is related to a kind of miniature pilework of inclination arrangement, technical solution is as follows: the miniature pilework of inclination arrangement It passes through slip mass including at least one set to combine with the mini pile that basement rock is fixedly connected, every group of mini pile combination includes at least three micro- The top plate that type stake and the surface that slip mass is arranged in are used to for the mini pile being connected as one;Mini pile includes first miniature Stake, the second mini pile and third mini pile, the second mini pile is perpendicular to the surface layout of slip mass, and the first mini pile is in face of landslide The application direction of thrust body is in tilted layout, and third mini pile is in tilted layout along the application direction of landslide thrust body;Positioned at landslide Lubrication interlayer is provided between the first mini pile and slip mass of internal body portion.Via hole corresponding with mini pile is provided on top plate Portion, mini pile passes through the via portion of top plate, and is equipped with elastomeric element in the mini pile end sleeve of the top plate other side, and will be elastic Component is fixed on the fixture nut on top plate.This method is linked together miniature pilework with top plate using nut, horizontal It is relatively poor to stability.
Utility model content
Reduce high embankment area occupied the technical problem to be solved by the utility model is to provide a kind of, reduces high embankment work After settle, reduce project cost, reduce the construction period, realize modularization, pipelining the high embankment supporting and retaining system knot in soft clay area Structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows: the high embankment retaining structure in soft clay area, packet The C30 reinforced concrete prefabricated board being arranged in pairs is included, is provided with roadbed filling and drawing between the C30 reinforced concrete prefabricated board Power anchor pole is provided with drain hole on the C30 reinforced concrete prefabricated board, and C30 reinforced concrete prefabricated board bottom is set to company It is provided with two layers of High-strength composite geotextile fabric in the groove of binder, between linking beam, is set between two layers of High-strength composite geotextile fabric Coarse sand bed course is set, each linking beam bottom is provided with miniature pile group.
Further, the miniature pile group is made of the mini pile that 3 colored steel pipes form, wherein 3 of every side are micro- Type stake includes a vertical mini pile and 2 inclined mini piles, and inclination mini pile and vertical line angle are 30 degree.
Further, vertical mini pile stake end enters 0.5 meter of linking beam.
Further, the preformed hole of the tension anchor rod is located at the midline of C30 reinforced concrete prefabricated board long side.
The beneficial effects of the utility model are: the utility model has the prefabricated board of modularization making, assembly line construction, nothing High embankment retaining structure template and the high embankment retaining structure template of manual demolition need to manually be erected, can multiple spot construct simultaneously, construct The advantages that speed is fast, and construction efficiency is high, and the construction period is short, and project cost is relatively low, and the deformation of filled-up ground settlement after construction is small, especially It is suitable among Freeway in Soft Soil Area or the high embankments construction of high-grade highway.
Detailed description of the invention
Fig. 1 is the structure sectional view of the utility model.
Fig. 2 is the side view of Fig. 1.
In the figure, it is marked as C30 reinforced concrete prefabricated board 1, tension anchor rod 2, billet 3, nut 4, linking beam 5, M30 It is cement mortar 6, mini pile 7, gutter 8, ground 9, road surface 10, PVC casing 11, roadbed filling 12, coarse sand bed course 13, high-strength Spend composite earthwork cloth 14, weak soil 15, drain hole 16, construction joint 17.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
The high embankment supporting and retaining system construction method in soft clay area as shown in Figure 1 and Figure 2, includes the following steps: a, firstly, according to road Dike height and embankment stability need, and make C30 reinforced concrete prefabricated board 1 in prefabricated place, wherein C30 armored concrete 1 length of prefabricated board determines according to depth of fill, be provided on C30 reinforced concrete prefabricated board 1 tension anchor rod 2 preformed hole and It is provided with drain hole 16;B, then, in the miniature pile group of soft clay area both sides of the road construction;C, secondly, in mini pile 7 priming petock Mud;D, weak soil 15 is excavated between the miniature pile group in the left and right sides again, then two layers of high-strength complex is set at 15 excavation of weak soil Geotextiles 14 are closed, coarse sand bed course 13 is set between described two layers of High-strength composite geotextile fabric 14;E, in high strength composite earthworker's Roadbed filling 12 is arranged in 14 top skin of cloth;F, it is welded to connect using spiral and the mini pile 7 of the above-mentioned left and right sides, spiral shell Line reinforcing bar housing PVC casing 11 at roadbed filling, to form miniature pile group statically indeterminate system;G, then in two sides mini pile The linking beam 5 of the cast-in-place C30 armored concrete of group, wherein setting is fluted in linking beam 5;H, using crane by C30 reinforced concrete At the native lifting to the linking beam 5 of the left and right sides of prefabricated board 1, and the bottom end of C30 reinforced concrete prefabricated board 1 is allowed to be set to linking beam In 5 groove;I, then at perfusion M30 cement mortar to the grooved void of linking beam 5, it is ensured that C30 reinforced concrete prefabricated board 1 It is consolidated with linking beam 5;J, the gap between the C30 reinforced concrete prefabricated board 1 of the left and right sides carries out roadbed filling 12 Construction, and layered rolling roadbed filling 12 is answered, until being filled to highway roadbed bottom surface;K, when roadbed filling is close to every layer of pulling force anchor When the preformed hole height of bar 2, the construction in layer tension anchor rod 2 at the preformed hole of left and right sides C30 reinforced concrete prefabricated board 1; L, cystosepiment is arranged along the construction joint 17 in road route direction in linking beam 5 and C30 reinforced concrete prefabricated board 1;M, it completes soft The high embankment supporting and retaining system construction in soil area.
Construct step by step mini pile 7, cast-in-situ steel reinforced concrete linking beam 5, lifting C30 reinforcing bar of the utility model sectional is mixed The operations such as solidifying soil prefabricated board 1, have modularization making prefabricated board, assembly line construction, without manually erecting high embankment retaining structure Template and the high embankment retaining structure template of manual demolition, can multiple spot construct simultaneously, speed of application is fast, and construction efficiency is high, work of constructing The advantages that phase is short, and project cost is relatively low, and the deformation of filled-up ground settlement after construction is small.The high embankment retaining structure in the soft clay area and Construction method has extensive practical value.In general, being preferably applied to soft clay area road is highway or high-grade public affairs Road.For using static pressed pile mode to construct if encountering mud and silt soil region in the miniature pile group construction of step b, if Encountering other soft clay areas then uses driven pile or drilled pile mode to construct.
In order to guarantee ideal mechanics effect, in step a, the tension anchor rod 2 is allowed as shown in Figure 1, can choose Preformed hole is located at the midline of 1 long side of C30 reinforced concrete prefabricated board.
In order to obtain preferable sluicing effect, in step a, it is set to as shown in Figure 1, can choose the drain hole 16 1 wall surface of C30 reinforced concrete prefabricated board.
As illustrated in figs. 1 and 2, as preferred structure, in step b, the miniature pile group of two sides construction is by 3 Hua Gangguan The mini pile 7 of composition is constituted, wherein 3 mini piles of every side include a vertical mini pile 7 and 2 inclined mini piles 7, inclination mini pile 7 and vertical line angle are 30 degree.On this basis, 7 ends of mini pile vertical in preferred steps g enter company 0.5 meter of binder.
In order to obtain ideal slip casting effect, the high embankment supporting and retaining system construction method in such soft clay area, step c can be used In, the cement slurry ratio of mud is 0.4~0.5, and using multiple grouting under pressure technique, first time grouting pressure 0.4MPa pressurizes 5 points Clock, it is ensured that cement slurry washes injected hole and the coniform bottom transparent rubberized fabric of miniature pile top open;Second of grouting pressure 3MPa, stake top are adopted It is filled with microlith.
In addition, 2 prestressing force of tension anchor rod is logical according to construction period and operation phase roadbed subsidence situation dynamic in step k Nut adjustment is crossed, to increase the flexibility of construction.
The high embankment retaining structure in soft clay area obtained by above-mentioned construction method, including the C30 reinforced concrete being arranged in pairs Native prefabricated board 1 is provided with roadbed filling 12 and tension anchor rod 2, the C30 reinforcing bar between the C30 reinforced concrete prefabricated board 1 Drain hole 16 is provided on concrete prefabricated board 1,1 bottom of C30 reinforced concrete prefabricated board is set in the groove of linking beam 5, It is provided with two layers of High-strength composite geotextile fabric 14 between linking beam 5, coarse sand pad is set between two layers of High-strength composite geotextile fabric 14 Layer 13, each 5 bottom of linking beam are provided with miniature pile group.
Embodiment
The present embodiment calculates according to depth of fill and embankment stability require first, and in prefabricated place, production C30 reinforcing bar is mixed Solidifying soil prefabricated board 1, prefabricated board length is determining according to depth of fill, and 3 meters of width, 0.5 meter of thickness.Tension anchor rod 2 is arranged in prefabricated board Preformed hole, 0.1 meter of aperture, preformed hole are located at prefabricated board long side midline, and 3 meters of pitch of holes.Using PVC casing 11 on prefabricated board Setting drain hole 16,0.1 meter of aperture, 2 × 2 meters of pitch of holes.Then in Freeway in Soft Soil Area or the high embankment of high-grade highway Static pressed pile can be used in the miniature pile group of two sides construction, mud and silt soil region, and driven pile or brill can be used in other soft clay areas Hole stake, the miniature pile group in two sides are made of 3 mini piles (159 millimeters of diameter colored steel pipes), and mini pile stake is long according to foundation bearing The calculating such as power determine.The mini pile of every side 3 include a vertical mini pile and 2 inclination mini piles, inclination mini pile with vertically Wire clamp angle is 30 degree.3 diameters, 28 millimeters of reinforcing bars are set in every mini pile stake, and 3 diameters, 28 millimeters of reinforcing bars are helped in isosceles triangle It is welded into type.Mini pile overall length is arranged quincunx injected hole, 20 millimeters of injected hole aperture, and 0.5 meter of pitch of holes, to prevent weak soil from entering In mini pile, injected hole is pasted using transparent rubberized fabric.Mini pile bottom be welded into point it is coniform, to prevent weak soil from entering mini pile It is interior, mini pile bottom is pasted using transparent rubberized fabric.Grout injection in mini pile, the cement slurry ratio of mud 0.4~0.5, using more Secondary grouting under pressure technique, first time grouting pressure 0.4MPa pressurize 5 minutes, it is ensured that cement slurry washes injected hole and miniature pile top open Coniform bottom transparent rubberized fabric;Second of grouting pressure 3MPa, stake top are filled using microlith.Between the miniature pile group in the left and right sides 0.55 meter thick weak soil is excavated, then double-layer high strength composite earthwork cloth, two layers of high strength composite earthworker's are set at weak soil excavation The coarse sand bed course of 300 millimeters thicks is set between cloth.Geotextiles have filtering, draining, isolation, reinforcement, antiseepage, protective action, together When have the characteristics that light-weight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion-resistant, especially suitable for Soft clay area.On second layer High-strength composite geotextile fabric surface layer, 200 millimeters thick roadbed filling layers are set.Using 32 millimeters of spiral shells of diameter Line reinforcing bar and the mini pile of the left and right sides 6 are welded to connect, spiral 0.1 meter of pvc pipe of housing diameter at roadbed filling, from And form miniature pile group statically indeterminate system.Then in the cast-in-place C30 armored concrete linking beam of the miniature pile group in two sides, vertical mini pile Stake end enters 0.5 meter of linking beam.Linking beam is 1.5 meters of linking beam bottom width, 3 meters high according to calculating configuration reinforcement.In linking beam surface Groove is arranged in portion, and groove is 0.7 meter wide, 2 meters deep.C30 reinforced concrete prefabricated board is lifted to the left and right sides using crane and is linked Liang Chu, it should be ensured that prefabricated board bottom end is placed in linking beam groove.Then M30 cement mortar is perfused to linking beam grooved void Place, it is ensured that prefabricated board and link beam consolidation.Roadbed filling construction is carried out in left and right sides prefabricated board gap, and answers layered rolling Roadbed filling, until being filled to highway roadbed bottom surface.When roadbed filling is close to every layer of tension anchor rod preformed hole height, in left and right two Construction in layer tension anchor rod (32 millimeters of spirals of diameter) at the prefabricated board tension anchor rod preformed hole of side, tension anchor rod is exposed prefabricated 0.1 meter of plate plate face, 0.1 meter of pvc pipe of tension anchor rod housing diameter, then at tension anchor rod be arranged billet (0.2 meter of length, It is 0.2 meter of width, 0.01 meter thick), tightening nut on the outside of billet.Construction period and operation phase settle situation according to highway pavement and move State adjusts tension anchor rod prestressing force by nut.0.02 meter of thickness is arranged in its side along route direction in linking beam and prefabricated board Construction joint (subsiding crack).
The present embodiment sectional construct step by step mini pile, cast-in-situ steel reinforced concrete linking beam, lifting C30 armored concrete The operations such as prefabricated board.The high embankment retaining structure has modularization making prefabricated board, and assembly line construction erects Gao Lu without artificial Dike retaining structure template and the high embankment retaining structure template of manual demolition, can multiple spot construct simultaneously, speed of application is fast, construction efficiency The advantages that height, the construction period is short, and project cost is relatively low, and the deformation of filled-up ground settlement after construction is small.

Claims (4)

1. the high embankment retaining structure in soft clay area, it is characterised in that: including the C30 reinforced concrete prefabricated board (1) being arranged in pairs, Roadbed filling (12) and tension anchor rod (2), the C30 reinforced concrete are provided between the C30 reinforced concrete prefabricated board (1) It is provided with drain hole (16) on native prefabricated board (1), C30 reinforced concrete prefabricated board (1) bottom is set to the groove of linking beam (5) In, it is provided between linking beam (5) two layers of High-strength composite geotextile fabric (14), is set between two layers of High-strength composite geotextile fabric (14) It sets coarse sand bed course (13), each linking beam (5) bottom is provided with miniature pile group.
2. the high embankment retaining structure in soft clay area as described in claim 1, it is characterised in that: the miniature pile group is by 3 The mini pile (7) of flower steel pipe composition is constituted, wherein 3 mini piles (7) of every side include a vertical mini pile (7) and 2 Inclined mini pile (7), inclination mini pile (7) and vertical line angle are 30 degree.
3. the high embankment retaining structure in soft clay area as claimed in claim 2, it is characterised in that: vertical mini pile (7) stake end Into (5) 0.5 meters of linking beam.
4. the high embankment retaining structure in soft clay area as described in claim 1, it is characterised in that: the tension anchor rod (2) it is pre- It boxes out positioned at the midline of C30 reinforced concrete prefabricated board (1) long side.
CN201820926054.4U 2018-06-14 2018-06-14 The high embankment retaining structure in soft clay area Active CN208604438U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155390A (en) * 2020-01-09 2020-05-15 江苏科技大学 Fabricated road suitable for mudflat stratum and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155390A (en) * 2020-01-09 2020-05-15 江苏科技大学 Fabricated road suitable for mudflat stratum and construction method thereof

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