CN202482727U - Temporary road surface pavement structure for ultra-shallow burying excavation underground project - Google Patents

Temporary road surface pavement structure for ultra-shallow burying excavation underground project Download PDF

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Publication number
CN202482727U
CN202482727U CN2011205751386U CN201120575138U CN202482727U CN 202482727 U CN202482727 U CN 202482727U CN 2011205751386 U CN2011205751386 U CN 2011205751386U CN 201120575138 U CN201120575138 U CN 201120575138U CN 202482727 U CN202482727 U CN 202482727U
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China
Prior art keywords
bedding
pavement
ramp
road
construction
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Withdrawn - After Issue
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CN2011205751386U
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Chinese (zh)
Inventor
张明聚
郑伟
张颖
赵明
王双龙
李春芳
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The utility model relates to a temporary road surface pavement structure for an ultra-shallow burying excavation underground project and construction methods. The temporary road surface pavement structure for the ultra-shallow burying excavation underground project comprises a main pavement structure, rubber cushions, slope pavement structures, back pressure steel plate pavement structures and spikes. A plurality of standard members of the main pavement structure and the standard members are welded to form the main pavement structure. A plurality of lacing plates at the bottom of the standard member, a plurality of steel I-beams in the middle of the standard member and a printing steel plate at the top of the standard member are welded to form the standard members of the main pavement structure. A plurality of standard members of the slope pavement structure and the standard members of the slope pavement are welded to form the slope pavement structure. A plurality of lacing plates at the bottom of the standard member, a plurality of steel I-beams with heights changing along an inclined direction in the middle of the standard member and a printing steel plate at the top of the standard member are welded to form the standard members of the slope pavement structure. The rubber cushions are fully paved under the temporary road surface pavement structure and the back pressure steel plate pavement structures are arranged at the intersections between the slope pavement structures and road surfaces on the two sides. In construction, the method of beveling construction is adopted. The temporary road surface pavement structure for the ultra-shallow burying excavation underground project has the advantages of simple structure, convenient and fast construction, small impact on ground transportation and remarkable deloading effect on the underground project.

Description

The temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction
Technical field
The utility model relates to a kind of temporary pavement bedding structure of constructing on the urban road surfaces that is laid on, and relates in particular to a kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction.
Background technology
In the construction of shallow buried covered excavation underground construction underway; The normal method of advance support and preliminary bracing that adopts is reinforced the country rock of underground construction; Especially the top country rock makes it keep stablizing and not producing excessive distortion, can bear the effect of top soil body weight and road vehicles load.But; Because the adverse effect of factors such as Rock Conditions is poor, thickness of earth covering is thin, underground utilities are many; Advance support and preliminary bracing can not effectively be implemented, or through the effect that the stratum supporting capacity of reinforcing still is not enough to resist upper formation and load, cause the road surface to subside; Jeopardize traffic safety, even bring life and property loss.At present, for the shallow embedding underground construction, the floor pavement of being everlasting 10~20mm steel plate is as ancillary method.But because thickness is limited, bending rigidity is little, and the effect that diffusion reduces load is limited, according to the material mechanics principle analysis, increases producing little effect that steel plate thickness obtains merely.Vertical motion takes place in steel plate under the vehicular load effect in addition, can increase vertical dynamic loading on the contrary; Steel plate receives the effect repeatedly of horizontal force in vehicle ' or the braking procedure, and longitudinal leap takes place.
The utility model content
The purpose of the utility model be to provide a kind of simple in structure, convenient and quick construction, little to the traffic above-ground influence, underground engineering off-load made the temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction made good use of.Through adopting temporary pavement bedding structure; Adopt the shaped steel combining structure, increase considerably the bending rigidity of bedding structure, in bedding structure both sides ramp is set simultaneously; Guarantee road vehicles with certain speed limit safety traffic, reduce vehicular load directly to the effect of top of underground country rock.
The technical scheme that the utility model adopts is following:
A kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction; It is characterized in that: the road surface is provided with temporary pavement bedding structure above the shallow buried covered excavation underground construction; Its laying scope is advisable with the scope that structure construction under can mulched ground possibly have influence on along the road longitudinal length, laterally can cover all motorways.Interim construction road surface bedding structure comprises main bedding structure, rubber pad, ramp bedding structure, back-pressure steel plate pavement structure and railway spike; Said main bedding structure is made up of some main bedding construction standard external member welding; Said main bedding construction standard external member is made up of some bottoms lacing plate, some middle parts i iron and a top printed steel plate welding; Top printed steel plate, bottom lacing plate and middle part i iron directly weld; Per two blocks of bottom lacing plates are 0.5m~1.0m distance at interval, thereby the workman is spaced from can top steel plate and middle part i iron being welded during this time.Between the main bedding construction standard external member that is arranged side by side, adopt vertical elongated reinforcing bar welding to constitute main bedding structure along bridge; Main bedding structure two ends are provided with ramp bedding structure, and the direction across bridge between main bedding structure and the ramp bedding structure adopts horizontal elongated reinforcing bar welding, selects for use according to the thickness of top steel plate to the diameter of elongated reinforcing bar in length and breadth, is advisable to guarantee that the paving is smooth-going; Said ramp bedding structure is made up of some ramp bedding construction standard external member welding; Said ramp bedding construction standard external member is made up of bottom lacing plate, oblique degree of the uprising i iron in middle part and the welding of top printed steel plate; The welding manner of bottom lacing plate, oblique degree of the uprising i iron in middle part and top printed steel plate is identical with the welding manner of main bedding construction standard external member; Oblique degree of the uprising i iron in middle part is to adopt the complete oblique cutting of i iron to form, and between the ramp bedding construction standard external member that is arranged side by side, adopts vertical elongated reinforcing bar welding to constitute ramp bedding structure along bridge; Below main bedding structure and sloped sides road bedding structure, completely be covered with the thick rubber pad of 10~15mm, as the continuous flexible foundation of construction temporary pavement bedding structure; Be provided with back-pressure steel plate pavement structure in the crossing position of ramp bedding structure and road surface, both sides; Back-pressure steel plate one end in the back-pressure steel plate pavement structure is welded on the ramp bedding structure through horizontal elongated reinforcing bar; The other end is connected fixing with the road surface through railway spike, railway spike is fixed on the back-pressure steel plate on the road surface through the mode of implanting anchoring in punching back on the road surface.
Said main bedding structure is pressed the lane width precast block; The promptly main bedding construction standard of block count suite number equals the sum in up-downgoing motor line track, and the length of piecemeal is more than or equal to the span of underground construction, wherein; The width of main bedding construction standard external member is selected to confirm by the normal width in concrete track; Be divided into these 4 kinds of 3.0m, 3.5m, 3.75m, 4.0m, the length of main bedding construction standard external member is pressed the span of underground structure and is confirmed, and more than or equal to the span of underground structure; Ramp bedding structure is also come piecemeal by the motorway number; Block count is the sum that ramp bedding construction standard suite number equals the up-downgoing motorway equally; The length of ramp bedding construction standard external member is confirmed by 3.5% the gradient; Comparatively smooth and easy to guarantee driving, the width of ramp bedding construction standard external member is identical with the width of main bedding construction standard external member.The length overall of road surface bedding structure (being the length that main bedding construction standard external member length adds two ramp bedding construction standard external members); Calculate by formula ; Wherein, B is the width of underground engineering structure; H is the degree of depth of underground engineering structure lower limb bottom surface to the road surface, and φ is the angle of internal friction weighted average of each soil layer in the H depth bounds.
Described a kind of temporary pavement bedding structure that is used for the shallow buried covered excavation underground engineering construction, the bedding structure is made up of external members such as main bedding structure, ramp bedding structure, the close shop in back-pressure steel plate paving and bottom rubber pads.Main bedding structure is made up of top printed steel plate, middle part i iron and bottom batten plate, and is prefabricated by the standard lane width, and on-the-spot integral hoisting is laid; Ramp bedding structure is made up of the i iron and the bottom batten plate of top printed steel plate, middle part oblique cutting, and also prefabricated by the standard lane width, on-the-spot integral hoisting is laid; Back-pressure steel plate paving at road transversely by the single width design of having a lot of social connections, road vertically on the width design be advisable with 4~6m.The top steel plate adopts the method for laying the welding of joint filling reinforcing bar to connect between each standard external member, and the back-pressure steel plate is fixed on the road surface through the railway spike that is anchored in the road surface.
The above-mentioned job practices that is used for the interim construction road surface bedding structure of shallow buried covered excavation underground construction is:
Lay the method that adopts the bevelling construction when temporarily constructing road surface bedding structure, the half range road that promptly seals a side earlier carries out the laying of temporary pavement bedding structure, lays the operation of opening this one-sided road temporary pavement bedding structure after accomplishing; Then, sealing opposite side road carries out temporarily the construct laying of road surface bedding structure of another half range road, lays intermediate isolating hurdle and guardrails of both sides to be set after accomplishing; At last, the road surface bedding structure twocouese of temporarily constructing is opened operation, and its concrete construction sequence is:
The first step: measure unwrapping wire, confirm the position of construction road surface bedding structure;
Second step: earlier the half range road of the sealing one side road surface bedding structure of constructing is laid, and at first lays the rubber pad as the continuous flexible foundation of construction road surface bedding structure;
The 3rd step, on rubber pad, lay some main bedding construction standard external members, main bedding construction standard external member is welded into integral body in factory, transports to on-the-spot back integral hoisting and lays;
The 4th step, lay ramp bedding construction standard external member, ramp bedding construction standard external member is welded into integral body in factory, transports to on-the-spot back integral hoisting and lays;
The 5th step was welded to connect through vertical elongated reinforcing bar between the some main bedding construction standard external member that is arranged side by side along bridge, constituted main bedding structure; Between the some ramp bedding construction standard external members that are arranged side by side, also adopt vertical elongated reinforcing bar welding along bridge, constitute ramp bedding structure; Direction across bridge adopts horizontal elongated reinforcing bar welding between main bedding structure two ends and the ramp bedding structure;
The 6th step repeated for second step to the 5th step, and sealing opposite side road carries out temporarily the construct laying of road surface bedding structure of another half range road;
The 6th step, on ramp bedding structure, lay the back-pressure steel plate, top one end of back-pressure steel plate is welded in through horizontal elongated reinforcing bar in the middle of the ramp bedding structure, and the bottom other end is connected fixing with the road surface through railway spike;
The 7th step was provided with intermediate isolating hurdle and both sides protective guard, recovered two-way being open to traffic.
In the process that is open to traffic, it is on duty to establish full-time security official 24 hours, when finding local element falling or irregularity, in time adopts remedial measures or safeguard procedures, guarantees traffic safety.
Beneficial effect
The interim construction road surface bedding structure that is used for the shallow buried covered excavation underground construction of the utility model and job practices is simple in structure, convenient and quick construction, little to traffic above-ground influence, underground engineering off-load is made good use of; The construction road surface bedding that the shaped steel of its low clearance and steel plate are formed; Bending rigidity increases considerably; Load through the load sharing effect, has alleviated the effect of road vehicles load to the top of underground country rock by construction road surface bedding structure when vehicle passes through.Laying the thick rubber spacer of one deck 10~15mm between bedding structure and road surface to increase the frictional force between bedding structure and road surface; Reduce vertical and extensional vibration; Reduced the effect of vehicle dynamic load, road pavement also plays the certain protection effect simultaneously, prevents to destroy the road surface.Ramp with the contact position, ground, be provided with the back-pressure steel plate, prevent the perk of ramp end, jeopardize traffic safety.The bedding structure is fixed on the road surface through anchor spike, longitudinal leap can not take place.Therefore this structure has good application prospects.
Description of drawings
Fig. 1 is the structural plan sketch map of the utility model;
Fig. 2 is bedding structure longitudinal section, the construction road surface sketch map of the utility model figure one;
Fig. 3 is the construction road surface bedding structure cross sectional representation of the utility model figure one
Fig. 4 is the main bedding construction standard external member floor map of the utility model figure two;
Fig. 5 is the main bedding construction standard external member longitudinal section sketch map of the utility model figure two;
Fig. 6 is the main bedding construction standard external member cross sectional representation of the utility model figure two;
Fig. 7 is the main bedding construction standard external member batten plate detail of construction of the utility model figure two;
Fig. 8 is the ramp bedding construction standard external member floor map of the utility model figure two;
Fig. 9 is the ramp bedding construction standard external member longitudinal section sketch map of the utility model figure two;
Figure 10 is the ramp bedding construction standard external member cross sectional representation of the utility model figure two;
Among the figure:
1-master's bedding construction standard external member; 2-ramp bedding construction standard external member; 3-back-pressure steel plate pavement structure; The 4-road surface; The 5-rubber pad; 6-bottom lacing plate; 7-middle part i iron; 8-top printed steel plate; The elongated reinforcing bar of 9-; Oblique degree of the uprising i iron in 10-middle part; The 11-railway spike; 12-back-pressure steel plate; The 13-underground construction; The potential plane of fracture of 14-; 15-road edge line; 16-intermediate isolating hurdle.
The specific embodiment
Certain subway access is adopted to bury in advance and is worn a busy street under the tunneling; The long 49.99m of passage; Structure top thickness of earth covering 1.79~2.94m; The underground structure pattern adopts flat-top stalk individual layer single span structure, and excavated section is 7.60m * 4.95m, 9.50m * 6.35m (people's air defense section), 3 kinds of sections of 7.80m * 4.95m.
Shown in Fig. 1-10; A kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction of the utility model; Road surface 4 is provided with temporary pavement bedding structure above shallow buried covered excavation underground construction 13, and the road surface bedding structure of temporarily constructing comprises main bedding structure, rubber pad, ramp bedding structure, back-pressure steel plate pavement structure and railway spike; Main bedding structure is made up of some main bedding construction standard external member 1 welding; Main bedding construction standard external member 1 is made up of some bottoms lacing plate 6, some middle parts i iron 7 and top printed steel plate 8 welding; Per two blocks of bottom lacing plates 6 are 0.5m~1.0m distance at interval, between the main bedding construction standard external member 1 that is arranged side by side, adopts vertical elongated reinforcing bar 9 welding to constitute main bedding structure along bridge; Main bedding structure two ends are provided with ramp bedding structure, and the direction across bridge between main bedding structure and the ramp bedding structure adopts horizontal elongated reinforcing bar 9 welding; Ramp bedding structure is made up of some ramp bedding construction standard external member 2 welding; Ramp bedding construction standard external member 2 is made up of bottom lacing plate 6, oblique degree of the uprising i iron 10 in middle part and 8 welding of top printed steel plate, between the ramp bedding construction standard external member 2 that is arranged side by side, adopts vertical elongated reinforcing bar 9 welding to constitute ramp bedding structure along bridge; Main bedding construction standard external member 1 and ramp bedding construction standard external member 2 are welded assembled in the metal processing space, and whole Transporting adopts the integral hoisting of 100t mobile crane to lay in place to the job site.Below main bedding structure and sloped sides road bedding structure, completely be covered with the thick rubber pad 5 of 10~15mm; Be provided with back-pressure steel plate pavement structure 3 in ramp bedding structure and 4 crossing positions, road surface, both sides; Back-pressure steel plate 12 1 ends in the back-pressure steel plate pavement structure 3 are welded on the ramp bedding structure through horizontal elongated reinforcing bar 9, and the other end is connected fixing with road surface 4 through railway spike 11.
Wherein, main bedding structure is pressed the lane width precast block, and the promptly main bedding construction standard of block count external member 1 number equals the sum in up-downgoing motor line track; The length of piecemeal is more than or equal to the span of underground construction 13; Wherein, the width of main bedding construction standard external member 1 selects to confirm by the normal width in concrete track, is divided into 4 kinds of 3.0m, 3.5m, 3.75m, 4.0m; The length of main bedding construction standard external member 1 confirms by the span of underground construction, and more than or equal to the span of underground construction 13; Ramp bedding structure is also come piecemeal by the motorway number; Block count is the sum that ramp bedding construction standard external member 2 numbers equal the up-downgoing motorway equally; The length of ramp bedding construction standard external member 2 confirms that by 3.5% the gradient width of ramp bedding construction standard external member 2 is identical with the width of main bedding construction standard external member 1; The length overall L of road surface bedding structure calculates by formula ; Wherein, B is the width of underground construction 13; H be underground construction lower limb bottom surface to the road surface 4 the degree of depth, φ is the angle of internal friction weighted average of each soil layer in the H depth bounds.
The above-mentioned job practices that is used for the temporary pavement bedding structure of ultra shallow buried covered excavation underground construction is characterized in that:
Lay the method that adopts the bevelling construction when temporarily constructing road surface bedding structure, the half range road that promptly seals a side earlier carries out the laying of temporary pavement bedding structure, lays the operation of opening this one-sided road temporary pavement bedding structure after accomplishing; Then, sealing opposite side road carries out temporarily the construct laying of road surface bedding structure of another half range road, lays intermediate isolating hurdle 16 and guardrails of both sides to be set after accomplishing; At last, the road surface bedding structure twocouese of temporarily constructing is opened operation, and its concrete construction sequence is:
The first step: measure unwrapping wire, confirm the position of construction road surface bedding structure;
Second step: earlier the half range road of the sealing one side road surface bedding structure of constructing is laid, and at first lays the rubber pad as the continuous flexible foundation of construction road surface bedding structure;
The 3rd step, on rubber pad 5, lay some main bedding construction standard external members 1, main bedding construction standard external member 1 is welded into integral body in factory, transports to on-the-spot back integral hoisting and lays;
The 4th step, lay ramp bedding construction standard external member 2, ramp bedding construction standard external member 2 is welded into integral body in factory, transports to on-the-spot back integral hoisting and lays;
The 5th step was welded to connect through vertical elongated reinforcing bar 9 between the some main bedding construction standard external member 1 that is arranged side by side along bridge, constituted main bedding structure; Between the some ramp bedding construction standard external members 2 that are arranged side by side, also adopt vertical elongated reinforcing bar 9 welding along bridge, constitute ramp bedding structure; Direction across bridge adopts horizontal elongated reinforcing bar 9 welding between main bedding structure two ends and the ramp bedding structure;
The 6th step repeated for second step to the 5th step, and sealing opposite side road carries out temporarily the construct laying of road surface bedding structure of another half range road;
The 6th step, on ramp bedding structure, lay back-pressure steel plate 12, top one end of back-pressure steel plate 12 is welded in through horizontal elongated reinforcing bar 9 in the middle of the ramp bedding structure, and the bottom other end is connected fixing with road surface 4 through railway spike 11;
The 7th step was provided with intermediate isolating hurdle 16 and both sides protective guard, recovered two-way being open to traffic.
In the process that is open to traffic, it is on duty to establish full-time security official 24 hours, when finding local element falling or irregularity, in time adopts remedial measures or safeguard procedures, guarantees traffic safety.
More than be an exemplary embodiments of the utility model, the enforcement of the utility model is not limited thereto.

Claims (4)

1. temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction; It is characterized in that: be provided with temporary pavement bedding structure on shallow buried covered excavation underground construction (13) road surface, top (4), the road surface bedding structure of temporarily constructing comprises main bedding structure, rubber pad, ramp bedding structure, back-pressure steel plate pavement structure and railway spike; Said main bedding structure is made up of some main bedding construction standard external members (1) welding; Said main bedding construction standard external member (1) is made up of some bottom lacing plates (6), some middle parts i iron (7) and a top printed steel plate (8) welding, between the main bedding construction standard external member (1) that is arranged side by side, adopts vertical elongated reinforcing bar (9) welding to constitute main bedding structure along bridge; Main bedding structure two ends are provided with ramp bedding structure, and the direction across bridge between main bedding structure and the ramp bedding structure adopts horizontal elongated reinforcing bar (9) welding; Said ramp bedding structure is made up of some ramp bedding construction standard external members (2) welding; Said ramp bedding construction standard external member (2) is made up of bottom lacing plate (6), oblique degree of the uprising i iron in middle part (10) and top printed steel plate (8) welding, between the ramp bedding construction standard external member (2) that is arranged side by side, adopts vertical elongated reinforcing bar (9) welding to constitute ramp bedding structure along bridge; Below main bedding structure and sloped sides road bedding structure, completely be covered with rubber pad (5); Be provided with back-pressure steel plate pavement structure (3) in ramp bedding structure and road surface, both sides (4) crossing position; Back-pressure steel plate (12) one ends in the back-pressure steel plate pavement structure (3) are welded on the ramp bedding structure through horizontal elongated reinforcing bar (9), and the other end is connected fixing with road surface (4) through railway spike (11).
2. a kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction according to claim 1, it is characterized in that: said temporary pavement bedding structure end face and both sides are respectively arranged with intermediate isolating hurdle (16) and guardrails of both sides.
3. a kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction according to claim 1 is characterized in that: per two blocks of bottom lacing plates (6) are 0.5m~1.0m distance at interval.
4. a kind of temporary pavement bedding structure that is used for ultra shallow buried covered excavation underground construction according to claim 1 is characterized in that: the thick 10~15mm of said rubber pad (5).
CN2011205751386U 2011-12-31 2011-12-31 Temporary road surface pavement structure for ultra-shallow burying excavation underground project Withdrawn - After Issue CN202482727U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205751386U CN202482727U (en) 2011-12-31 2011-12-31 Temporary road surface pavement structure for ultra-shallow burying excavation underground project

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205751386U CN202482727U (en) 2011-12-31 2011-12-31 Temporary road surface pavement structure for ultra-shallow burying excavation underground project

Publications (1)

Publication Number Publication Date
CN202482727U true CN202482727U (en) 2012-10-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535302A (en) * 2011-12-31 2012-07-04 北京工业大学 Temporary pavement blanket structure for super-shallow buried subsurface-excavated underground engineering, and construction method thereof
CN104631274A (en) * 2015-01-30 2015-05-20 上海艾能电力工程有限公司 Temporary road pavement technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535302A (en) * 2011-12-31 2012-07-04 北京工业大学 Temporary pavement blanket structure for super-shallow buried subsurface-excavated underground engineering, and construction method thereof
CN102535302B (en) * 2011-12-31 2014-01-01 北京工业大学 Temporary pavement blanket structure for super-shallow buried subsurface-excavated underground engineering, and construction method thereof
CN104631274A (en) * 2015-01-30 2015-05-20 上海艾能电力工程有限公司 Temporary road pavement technology

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