CN114837028A - Road-related construction and traffic-guaranteeing construction method for intercommunicating junction - Google Patents
Road-related construction and traffic-guaranteeing construction method for intercommunicating junction Download PDFInfo
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Abstract
The invention discloses a road-related construction traffic-guaranteeing construction method for an intercommunicating junction, which is characterized in that opening construction is carried out on two central separation zones of an existing expressway, passing vehicles are led into built auxiliary ramps to pass, the auxiliary ramps are used as passing lanes for temporary diversion, and the construction method is divided into three construction stages: constructing a roadbed and a bridge of an auxiliary ramp connected with two central separation zones of the existing highway; closing a half-width traffic lane of a newly-built and intercommunicated junction main line of an existing expressway, and constructing a roadbed widening section of the existing expressway close to the closed side and a connecting sidewalk of an auxiliary ramp and the existing expressway; and (3) closing the full-width traffic lane of the existing expressway, and making the vehicles detour by the newly built auxiliary ramp to construct a cross-line bridge crossing the existing expressway and roadbed widening sections at two sides of the existing expressway. The existing high-speed bridge is spanned upwards, so that the construction can be concentrated and carried out simultaneously, the construction efficiency is improved, and the construction quality and progress are ensured simultaneously.
Description
Technical Field
The invention relates to the technical field of modern highway construction, in particular to a road-related construction traffic-guaranteeing construction method for an interworking junction.
Background
The highway is used as a rapid transportation channel of a modern highway and plays an important role in the current social economy. The high-speed intercommunication is used as an important junction in a road network, so that the regional road network is optimized, and the method plays a positive promoting role in logistics, resource development, quotation and investment of quotations, adjustment of an industrial structure and transverse economic union along the line.
However, the existing high speed of the main line of the newly-built interconnection junction and the ramp bridge is spanned, the safety risk of road-related construction is high, and the construction is difficult for the interconnection junction. Meanwhile, the intercommunicating junction is large in scale, multiple in ramps and cross construction, and how to organize the intercommunicating engineering construction in science under the condition of ensuring the construction safety and progress is the key point of the intercommunicating junction construction.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a construction method for road-related construction and traffic protection of an intercommunicating junction, which reasonably plans the construction sequence and technical measures of the whole project, reduces construction interference, strengthens the connection among all construction procedures, improves the construction efficiency and ensures the construction quality and progress.
The technical scheme adopted by the invention is as follows: a road-related construction and traffic-guaranteeing construction method for an interworking junction comprises the following steps: the construction method comprises the following steps of performing opening construction on two central separation zones of the existing expressway, introducing passing vehicles into built auxiliary ramps to pass, and taking the auxiliary ramps as passing lanes for temporary lane change, wherein the construction method comprises three construction stages:
the first stage is as follows: constructing a roadbed and a bridge of an auxiliary ramp connected with two central separation belts of the existing highway;
and a second stage: closing a half-width traffic lane of a newly-built and intercommunicated junction main line of an existing expressway, and constructing a roadbed widening section of the existing expressway close to the closed side and a connecting sidewalk of an auxiliary ramp and the existing expressway;
and a third stage: and (3) closing the full-width traffic lane of the existing expressway, and making the vehicles detour by the newly built auxiliary ramp to construct a cross-line bridge crossing the existing expressway and roadbed widening sections at two sides of the existing expressway.
The construction method is further improved in that after the half lane of the existing highway is closed in the second stage, the remaining half lane is changed into a bidirectional lane.
The construction method is further improved in that the construction method also comprises the step of constructing a connecting ramp between the main line on the closed side and the existing expressway in the second stage.
The construction method is further improved in that the construction method also comprises the step of constructing the rest ramps connected with the existing expressway at the third stage.
The construction method is further improved in that after the full-width traffic lane of the existing expressway is closed in the third stage, vehicles are driven in two directions by the auxiliary ramp.
The construction method is further improved in that the existing highway lane traffic is recovered after the construction of the third stage is completed.
The construction method is further improved in that the newly-built interchange junction adopts a direct connection, semi-direct connection and annular interchange form.
The construction method is further improved in that the upper structures of the main line and the ramp of the intercommunicating junction are a prestressed concrete continuous box girder and a continuous T girder, and the lower parts of the main line and the ramp are a column type platform or a buttress type platform, a column type pier and a pile foundation.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the vehicles are guided and changed onto the auxiliary ramp uniformly during the junction intercommunication construction, the interference of construction on the existing traffic is reduced, the main line is constructed in a full-width closed mode, a door opening does not need to be built, the construction cost is low, the existing high-speed bridge strides upwards can be constructed in a centralized mode, the construction efficiency is improved, and meanwhile the construction quality and progress are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a plan layout view of a reverse water south interchange provided in embodiment 1 of the present invention.
Fig. 2 is an overall schematic diagram of three-stage construction provided in embodiment 1 of the present invention.
Fig. 3 is a schematic view of the first stage construction provided in embodiment 1 of the present invention.
Fig. 4 is a schematic diagram of the second stage construction provided in embodiment 1 of the present invention.
Fig. 5 is a schematic diagram of a third stage construction provided in embodiment 1 of the present invention.
Fig. 6 is an enlarged schematic view of the embodiment 1 with an additional approach (connecting approach).
Fig. 7 is a schematic view of traffic guidance and modification during construction of the central newcastle interchange in embodiment 1.
Fig. 8 is a layout diagram of a hinge interconnection plane according to embodiment 2 of the present invention.
Fig. 9 is an enlarged schematic view of the embodiment 2 with an additional approach (connecting approach).
Fig. 10 is a schematic view of traffic guidance and modification during construction of the central newcastle interchange in embodiment 2.
Fig. 11 is a plan layout diagram of an interchange of the north hub in the state of the invention in embodiment 3.
Fig. 12 is a plan view of a stage-one construction closed emergency lane on both sides according to embodiment 3 of the present invention.
Fig. 13 is a plan view of a step two construction closed two-sided figure road shoulder provided in embodiment 3 of the present invention.
Fig. 14 is a plan view of a closed lane and a lane change in the stage three construction provided in embodiment 3 of the present invention.
Fig. 15 is a plan view of a stage four closed emergency lane and an outer lane on two sides provided by embodiment 3 of the present invention.
Fig. 16 is an enlarged schematic view of the embodiment 3 with an additional approach (junction approach).
Fig. 17 is a schematic view of traffic guidance and modification during construction of the central newcastle interchange in embodiment 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a road-related construction traffic-guaranteeing construction method for an interconnection junction, which reasonably plans the construction sequence and technical measures of the whole project, reduces construction interference, strengthens the connection among all construction procedures, improves the construction efficiency, ensures the construction quality and progress, and analyzes the key technology according to the actual construction cases of two interconnection junctions.
Example 1:
referring to fig. 1 to 7, a construction method for constructing an interchange type vertical crossroads of a south hub of a reverse water system is shown.
The design range of the interchange of the water pouring south hub is as follows: the main line is from the Sterculia city winding line 1 to the Liuzhou direction 2, comprises two parts of a water pouring 1# bridge 6 and a water pouring 2# bridge 7, and is designed to be 2240 meters in length; the intersected line is (existing) Malian expressway 5, ranging from Sterculia direction 3 to Guilin direction 4. The inverted water south hub overpass adopts a direct connection, semi-direct connection and annular overpass form, and comprises 8 ramps A to H.
The exit of the A ramp adopts a single lane mode, the distance between the entrance and the original landing single-horn interchange outflow ramp (from Guilin to water pouring) of the Malian expressway 5 is only 684 meters, and the speed-changing lane is designed to be communicated after the acceleration lane flows in a double-lane mode.
The B-turn lane adopts the design standard of 10.5 m lane, and in order to keep the lane number balance, auxiliary lanes are arranged on the main line and the Malian high speed.
The other ramps (C, D, E, F, G, H) are the design standards of a one-way lane, namely, the acceleration lane adopts a parallel type, and the deceleration lane adopts a direct type; wherein D, H ramps adopt the left side mode of widening behind the nose, widen to two lanes, C, E, F, G ramps still adopt single lane.
The crossline bridge 5 seats are arranged on the crossline freeway on the reverse south interchange.
1. The main line water pouring 2# bridge 7 has the full length with the right width of 602.18 meters and the left width of 620.18 meters; the upper structure is a left/right prestressed concrete continuous box girder and a continuous T girder, and the lower structure is a column type platform, a counterfort type platform, a column type pier and a pile foundation.
2. The upper structure of each ramp is a prestressed concrete continuous box beam and a continuous T beam, and the lower structure of each ramp is a column type platform, a column type pier and a pile foundation.
In order to reduce the influence on the Malian high-speed driving as much as possible and shorten the construction time of a main line bridge and each ramp bridge for water pouring and intercommunication, the opening construction is carried out on two central separation zones at Malian high speed, the passing vehicles are led into a B-ramp which is built to pass, the B-ramp is taken as a passing lane for temporary diversion, and the construction method can be divided into three construction stages specifically, wherein the schematic diagram of the three-stage construction is shown in figure 2:
the first stage is as follows: constructing roadbed and bridge of B-ramp as shown in FIG. 3 and FIG. 7;
and a second stage: closing a half-width traffic lane crossing a Malian high-speed newly-repaired and intercommunicated junction main line in the Sterculia to Guilin direction, constructing a widened left roadbed of the Malian high-speed, and a B-turn road and Malian high-speed connection access road 8 as shown in figures 4 and 6;
and a third stage: the Malian high-speed full-width traffic lane is closed, vehicles detour through a newly built B-turn lane, a 5-seat cross-line bridge spanning the Malian high speed can be constructed, the left roadbed of the Malian high speed is widened, and the right roadbed of the Malian high speed is widened, as shown in figure 5.
Specifically, the first stage: the construction of the B-turn road subgrade bridge at the stage is a key point of the Malian high-speed winding, and the high-speed passing of Malian is not influenced.
The second stage comprises:
firstly, closing a left half-width traffic lane of a Malian high speed, and changing the right half-width bidirectional driving;
constructing a B-ramp roadbed;
constructing the B ramp and the Malay high-speed connection sidewalk;
fourthly, constructing D-ramp roadbed;
widening the malle medium bridge.
The third stage comprises:
firstly, closing a Malian high-speed full-width traffic lane, and changing the vehicle into a B-turn lane for bidirectional driving;
constructing 5 overpasses of a water pouring 2# bridge, a B-ramp 3# bridge, an E-ramp 2# bridge, an F-ramp 1# bridge and an H-ramp bridge;
a, E, F, G ramps and Malya high-speed connection roadbed widening construction;
fourthly, the construction of the third stage is finished, and the high-speed full-width lane traffic of the Malian is recovered.
Example 2:
referring to fig. 8-10, a construction method for traffic protection in the intercommunication type vertical crossing road construction of the same hinge is shown.
The Naqi hub is a hub interchange between the new Wu polder uptown expressway a (abbreviated as 'Wu high speed') and the existing Wu polder to the large pond expressway b (abbreviated as 'Wu large speed'). Mainly solves the problem of traffic conversion between the newly-repaired Wu-Shang high speed and the existing Wu-Da high speed. The hub intercommunication adopts a half-direct connection + single-ring form, and the interchange range is high speed in the existing Wu province; the existing Wu-Dazhong high-speed design range of the handed road is 2180 m long.
The fair junction is communicated with Wu high-speed main line a1 with the total length of 2000m, the designed load is highway-I level, and A, B, C, D, E, F, G, H total 8 ramps are arranged in the communication. The main structure is provided with 6 bridge seats, wherein a main line bridge 1 seat and a ramp bridge 5 seat (A, B, C1, C2 and F ramp bridges); A. b, C, D, E, F the ramp is a one-way two-lane ramp, and the standard road bed is 10.5 m wide; G. the standard roadbed width of the H ramp adopting the unidirectional single-lane ramp is 9.0m, and the design speed is 40-60 km/H.
The main line bridge and the A, B, C ramp bridge are communicated to span the Wu large expressway, 4 cross line bridges are respectively provided with a row of bridge piers positioned in a central separation band of the existing expressway, and two cross bridges span the existing expressway. The construction of the area which influences the traffic interference of the Wu great expressway is in the Wu great expressway. The invention divides the Wu-Dao-crossing high-speed construction into four stages:
the first construction stage (H ramp and road changing auxiliary roadbed filling, side slope protection construction and preparation work related to road changing):
immediately carrying out related preparation work for road changing construction after starting up; and (3) constructing the roadbed of the H-turn road and the auxiliary road changing part (without influencing Wu high speed). The planned occlusion period is 2 months.
The second construction stage (ramp connecting part and transition section construction, filling and digging for widening original roadbed, slope, H ramp and road changing auxiliary temporary pavement construction):
construction of an area (LKO + 040-LK 2+140) within 30 m of the red line of the interchange land of the Naqi junction and the Wu big highway requires enclosing and blocking of emergency lanes at two sides of the Wu big highway at the construction sections, including roadbed engineering, bridge foundation and infrastructure construction, and planning the closed period for 5 months.
The third construction stage (center dividing strip pile foundation, substructure, cast-in-place box girder construction, girder erection, bridge deck system and auxiliary structure):
and after the second construction stage is finished, the H ramp and the auxiliary road changing part are divided into a left ramp and a right ramp by using a middle concrete guardrail, all traffic flow is introduced into the ramp, and the hub is constructed from the exit section of the C ramp and the exit section of the D ramp in a large-speed full-width closed manner. The main construction contents in this stage are as follows: the bridge deck system comprises a Wu-crossing large high-speed central separation zone pile foundation, a substructure, B and C ramp cast-in-place box girders, A ramps, Wu-crossing large high-speed main line bridge frame girders, and all Wu-crossing large high-speed bridge deck systems and auxiliary structures. The planned occlusion period is 7 months.
A fourth construction stage (bridge construction for crossing H ramps and changing roads auxiliary parts):
and after the construction in the third stage is completed, the whole closure of the Wu large high speed is released, the Naqi pivot and the Wu large high speed connection gate opening are closed, and the normal traffic of the Wu large high speed original lane is recovered. And the construction hub is communicated with the residual bridges and culverts and the roadbed engineering.
And a panoramic high-definition camera is installed in the road-related construction area to carry out 24-hour monitoring, and the monitoring system is connected to a monitoring center of a project manager.
Example 3:
referring to fig. 11 to 17, a construction method for establishing a communication between north hub and north hub in a vertical and orthogonal road is shown.
The junction interchange type interchange in North of Xiangzhou is located in Xiangzhou county, adopts a semi-directional alfalfa leaf interchange mode, and belongs to the junction interchange type interchange. The setting of the north-north interchange type interchange is a function for effectively realizing the traffic conversion between a main line and a phoenix to Liuzhou highway (called the phoenix highway for short). The main line is spanned by the Chinese parasol tree high speed, the lanes of the left turn in the directions of Chinese parasol tree to palma and Liuzhou to Hezhou are all adopted by a semi-directional ramp, and the semi-directional ramp is adopted by the main line spanned by the Chinese parasol tree high speed and the upper span. Other directions adopt ring ramps.
The interconnection of the North junction of Xiangzhou is mainly bridge engineering, and the North junction of Xiangzhou has 10 bridges which are 1364.8 meters in total length; 4 prestressed concrete small box girders are arranged; the system comprises 3 steel-concrete composite beam bridges, 1 is a small box girder and a steel-concrete composite beam bridge, 1 is a prestressed concrete cast-in-place box girder and a steel-concrete composite beam bridge, and 1 is a reinforced concrete frame bridge; 7.67 ten thousand squares are dug in the north hub of Xiangzhou, 131.34 ten thousand squares are filled in the hub, and the roadbed slope protection is mainly characterized by an arch framework; the cover plate culvert has 12 channels of 1-2 multiplied by 2 and 663 meters in total, and the cover plate channel has 5 channels of 1-4 multiplied by 4.5 and 344 meters in total.
The north hub of Xiangzhou has the intercommunication starting pile number of YK189+390(ZK189+384), the finishing pile number of K191+380, the related high-speed starting pile number of the phoenix tree is WLK170+020, and the finishing pile number is WLK172+ 300.
Combining with the inter-working design drawing of the North junction of Xiangzhou, the whole construction is divided into five construction stages:
stage one: in the construction of the area within 30 meters of the red line of the junction intercommunication area in North China and China willow highways, the two emergency lanes on the two sides of the highways of the Chinese parasol highway in the construction sections need to be enclosed, the construction comprises roadbed engineering, bridge foundations and infrastructure construction, and the enclosed time period is 4 months.
And a second stage: after the construction of the first stage is completed, the sealing of emergency lanes on two sides of the construction section of the Chinese parasol tree expressway is removed, ramp openings are sealed, the construction of areas in intercommunication is carried out (the high speed of the Chinese parasol trees is not influenced), and the sealing period is 1 month.
And a third stage: the construction method mainly comprises the steps of constructing a bridge over the Chinese level willow expressway (from the Chinese level to the Liuzhou direction and from the Liuzhou direction to the Chinese level), closing all traffic lanes on two sides of the Chinese level willow expressway from an F ramp inlet position to an H ramp inlet position, then temporarily changing the lane of the Chinese level willow expressway, connecting vehicles in the Liuzhou direction to the Chinese level expressway through an H ramp and a C ramp, connecting the vehicles in the Chinese level direction to the Chinese level expressway through an F ramp and an A ramp, and keeping the closing time period for 4 months.
And a fourth stage: and (3) completely sealing the lanes on two sides of the Chinese parasol tree at high speed, carrying out ramp and ramp connection to carry out road surface engineering construction along the Chinese parasol tree high-speed extension section, sealing the emergency lanes and the outer lanes on two sides, leaving the inner lanes on two sides for traffic, immediately removing the sealing after the road surface engineering construction is finished, and sealing for 2 months.
And a fifth stage: after the road surface construction is finished, a connecting road junction communicated with a northjunction of Xiangzhou is closed (the high speed of the Chinese parasol is not influenced), vehicles normally running on the Chinese parasol are prevented from driving into the high speed of the Heba until the vehicles pass through the Heba high speed (mongolian section), the closing time is 2 months, after the construction of the fourth stage is finished, the closing of an emergency lane and an outer lane of the Chinese parasol expressway is removed, and a mobile steel guardrail (a light reflection indicating film is pasted on the mobile steel guardrail) is used for closing the connection inlet and the connection outlet of the A, B, C, D, E, F, G ring road and the Chinese parasol expressway and widening road shoulders, so that the original normal traffic of the Chinese parasol expressway is recovered.
The traditional construction method of junction intercommunication is to carry out half-width closed construction on an existing high-speed main line, an existing high-speed bridge strides upwards needs subsection construction, construction is greatly interfered by traveling cranes and construction is greatly interfered by the traveling cranes, construction efficiency is low, large potential safety hazards exist, and construction safety risks are high. The half-width closed construction needs to adopt section steel and steel pipe columns to set up a door at the position of an upper span bridge, needs to invest a large amount of steel, and has higher construction cost.
According to the method, vehicles are guided and changed to the ramp uniformly during the junction intercommunication construction period, the interference of construction to the existing traffic is reduced, the main line is constructed in a full-width closed mode, a door opening does not need to be built, the construction cost is low, the existing high-speed bridge striding upwards can be constructed simultaneously in a centralized mode, the construction efficiency is improved, and meanwhile the construction quality and progress are guaranteed.
The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A road-related construction traffic-guaranteeing construction method for an intercommunicating junction is characterized by comprising the following steps: the construction method comprises the following steps of performing opening construction on two central separation zones of an existing highway, introducing passing vehicles into a built auxiliary ramp to pass, and taking the auxiliary ramp as a passing lane for temporary lane change, wherein the construction method comprises three construction stages:
the first stage is as follows: constructing a roadbed and a bridge of an auxiliary ramp connected with two central separation belts of the existing highway;
and a second stage: closing a half-width traffic lane of a newly-built and intercommunicated junction main line of an existing expressway, and constructing a roadbed widening section of the existing expressway close to the closed side and a connecting sidewalk of an auxiliary ramp and the existing expressway;
and a third stage: and (3) closing the full-width traffic lane of the existing expressway, and making the vehicles detour by the newly built auxiliary ramp to construct a cross-line bridge crossing the existing expressway and roadbed widening sections at two sides of the existing expressway.
2. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: and after the half lane of the existing highway is closed in the second stage, changing the remaining half lane into a bidirectional lane.
3. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: and in the second stage, constructing a connecting ramp between the main line on the closed side and the existing expressway.
4. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: and constructing the rest ramps connected with the existing expressway at the third stage.
5. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: and in the third stage, after the full-width traffic lane of the existing expressway is closed, the vehicle drives in two directions by the auxiliary ramp.
6. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: and after the construction in the third stage is finished, the traffic of the existing expressway lane is recovered.
7. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: the newly-built interchange junction adopts a direct connection, semi-direct connection and annular interchange form.
8. The interworking junction road-related construction and traffic-guaranteeing construction method according to claim 1, characterized in that: the main line of the intercommunicating junction and the upper structure of the ramp are a prestressed concrete continuous box girder and a continuous T girder, and the lower part of the intercommunicating junction is a column type platform or a counterfort type platform, a column type pier and a pile foundation.
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| US20080267700A1 (en) * | 2007-04-28 | 2008-10-30 | Rene Yin | Weaving free two level cloverleaf type interchange for a highway crossing over a street |
| CN102296503A (en) * | 2011-05-25 | 2011-12-28 | 杨光 | Improved clover leaf overpass |
| WO2013159434A1 (en) * | 2012-04-28 | 2013-10-31 | Leung Valiant Yuk Yuen | Intelligent crossroad parking multicross straight chain hub-type pendulum flyover |
| CN103938512A (en) * | 2014-04-30 | 2014-07-23 | 陕西运通公路设计咨询有限公司 | Reverse construction method of newly built road with existing expressway in underneath penetrating manner |
| CN108677635A (en) * | 2018-06-05 | 2018-10-19 | 山东科技大学 | A kind of the interchange structure and construction method of the newly-built existing road of highway overlying |
| CN109137656A (en) * | 2018-10-22 | 2019-01-04 | 浙江交工集团股份有限公司 | The conversion construction method of uninterrupted traffic during a kind of reconstruction of highway |
| CN113338094A (en) * | 2021-06-04 | 2021-09-03 | 大连市市政设计研究院有限责任公司 | Urban interchange with double-layer structure for up-down lines and left-turn ramps |
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