JPH0721491A - Process control system for road construction - Google Patents

Abstract

PURPOSE:To determine the proper length of a road occupying section and to properly set up a road construction process in the determined road occupying section. CONSTITUTION:In the case of setting up a part of the width of a road as a road construction occupying section, respectively arranging temporary signals on extensions from both the ends of the section, and moving the road construction occupying section along the road in accordance with the advance of the road construction while executing single side traffic regulation for vehicles on the remaining part, the green signal ON time of respective temporary signals is determined based upon previously determined two-way vehicle traffic volume data on the road, the length of the section is determined by comparing the rate of vehicle arrival with the allowable number of waiting vehicles, the maximum excavatable distance in the section concerned is found out while considering a previously determined safety distance, and a construction cycle period is found out based upon the found distance.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention sets a road occupancy section on one side of a road, such as gas, water and sewage, laying under the road such as communication cables, road surface construction, etc. It relates to the process control system for construction on known roads.

[0002]

2. Description of the Related Art When a construction is carried out on a road, a road occupation section is set, and this road occupation section length is closely related to the traffic volume of the road and the construction progress of the construction operator. However, when the setting has a large impact on the residents, it will be decided by consultation of the concerned parties, but in other cases, it is set uniformly by the public institution considering the progress of the construction. Is. For example, it is less than 50m on major national roads and city roads with heavy traffic.

[0003]

However, even on the same first-class road, there are places where there is a large amount of traffic and places where there is a small amount of traffic, and the length of the road-occupying section causes traffic congestion in some places, and smooth construction is also possible. There are many cases in which progress is hindered. The present invention has been made in view of the above circumstances, and an object of the present invention is to increase the vehicle service rate by controlling the blue (or red) signal lighting control of the length of the occupied road section and the temporary traffic lights installed on both sides thereof by simulation. In addition, we provide a road construction process management system that manages the process so that the work efficiency can be increased within the set road occupation section length while appropriately considering the demands from the construction progress. To do.

[0004]

A road construction process management system according to the present invention uses a temporary traffic signal installed on each extension of both ends of the road occupation section by setting a road occupation section on a part of the width of the road. A road construction process in which construction is carried out in the road occupying section while one-sided traffic control is applied to vehicles at the remaining width of the road, and the road occupying section is moved along the road as the construction progresses. In the management system, means for obtaining the vehicle arrival rate at each temporary traffic signal installation position based on the bidirectional vehicle traffic volume data on the road obtained in advance, and the blue lighting time of each temporary traffic signal based on this vehicle arrival rate And a means for setting the road occupancy section length based on the comparison result, and comparing the vehicle arrival rate with a predetermined allowable number of vehicles waiting. Means for determining the maximum possible Ho置 distance in the road private use segment based on safety distances are determined, characterized in that it comprises a means for determining the cycle period of the construction work on the basis of the maximum possible Ho置 distance.

[0005]

According to the present invention, this makes it possible to determine an appropriate road occupation section length and perform process control so that a predetermined construction progress degree can be obtained within the determined road occupation section length.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a schematic side view of a road in which a road occupation section is set, and FIG. 2 is a schematic plan view of a road in which a road occupation section is set. In FIGS. 1 and 2, 1 is a two-way round trip road, 2 is a road occupying section of length L, 3, 4
Is a temporary traffic light, and 5 and 6 are vehicle detectors. The road occupying section 2 is set so as to block one lane of the road 1,
Temporary traffic lights 3 and 4 are installed at positions separated by b from both ends of the road occupying section 2, and vehicle detectors 5 and 6 are installed at positions further separated from them by distance c. The length L of the road occupying section 2 is set to the length obtained based on the simulation result described later.

The temporary traffic lights 3, 4 and the vehicle detectors 5, 6 are all connected to the arithmetic and control unit 7, and the green signal lighting time of the temporary traffic lights 3, 4 based on the simulation result obtained in advance by the arithmetic and control unit 7 One-sided traffic regulation is performed at first, and road construction is performed within the road occupation section 2 based on the process obtained by simulation.

FIG. 3 is an explanatory view showing an outline of construction work in the road occupation section. In the road occupying section 2 of length L,
From the both ends, the distance between l ₁ and l ₂ , respectively, is the security section 5, 6
And the distance l is an excavation section. Temporary traffic lights 3 and 4 are installed on the extensions of the road occupying sections 2 at a distance b, and vehicle detectors 5 and 6 are installed on the extensions at a distance c. In the excavation section 7, the road is excavated to a required depth, the gas pipes 11 to be connected are lined up in a line in the excavation section 7 and suspended, and the gas pipe 11 protruding from the wall surface on one end side When the pipes are sequentially welded and connected to each other and the gas pipe 11 is connected to a predetermined length, the portion is backfilled and the length corresponding to the backfilling is excavated to the right side in FIG. This backfill again,
As the excavation progresses, the positions of the temporary traffic lights 3, 4 and the vehicle detectors 5, 6 are also shifted to the right in FIG.
By repeating this process as one cycle, the road occupying section 2 is sequentially moved to the right to bury the gas pipe.

Cumulative distance from the construction start point O shown in FIG. 3 to the tip of the excavation section in the construction progress direction:
H, cumulative distance to suspended pipe tip position: I, cumulative distance to welded pipe tip: J, cumulative distance to backfill tip position: K.

Further, the excavation section distance: l (= H−K) (1) Distance from the excavation tip to the suspended pipe tip: m (= HI) (2) Suspended The distance from the pipe tip to the welded pipe tip: n (= IJ) (3).

Next, the processing steps in the simulation will be described with reference to the flow charts shown in FIGS. In the simulation, the same conditions as those shown in FIGS. 1 and 2 are set as the simulation conditions, and the empirically obtained values for the road occupation section length, the blue lighting time of the temporary traffic lights 3 and 4, etc. are respectively set as initial values. Given as values a ₀ and t ₀ ,
The simulation is executed based on the traffic data of the vehicle on the road 1 obtained by actual measurement in advance.

4 and 5 are flow charts showing the processing steps in the simulation apparatus according to the present invention. The vehicle detection data obtained by the vehicle detectors 5 and 6 which have been obtained in advance are read into the simulation device (step S1), and the vehicle arrival rates R _A and R _B to the temporary traffic lights 3 and 4 for the A direction and the B direction of the road 1 respectively ( (Units / second) is calculated (step S
2). Predetermined service rate (vehicles / second), vehicle travel time (seconds) in the part where the private road section 2 is set, security time (seconds) equivalent to the safety distance in consideration of safety with reverse traffic , Vehicle arrival rates R _A , R _B , and step S1
Based on the work cycle period when it is judged to be appropriate in step 3, the green signal display time (seconds) and the blue and red signal lighting cycle time (seconds) of the temporary traffic lights 3 and 4 are calculated (step S3).

The number of vehicles waiting for each vehicle (units) in the critical state at each temporary traffic signal 3, 4 installation position is calculated (step S4), and this and the allowable number of waiting vehicles for the vehicle (units) are calculated in advance.
Determine the maximum allowable road occupation section length (m) based on
(Step S5). Next, based on the construction machine occupation distance (m), the safety distance (m), the work cycle period described later obtained in step S11, the maximum allowable road occupation section length (m), etc. The maximum possible excavation distance (m) is determined (step S6).

Furthermore, the excavable distance per day (m / day), the backfillable distance per day (m / day), and the total construction length R, which are separately obtained, are read out, and the maximum possible excavation distance previously determined. Based on (m), i ← 1, i ← i until the cumulative distance K from the starting point O to the backfill tip position becomes R.
+1 is repeated (step S7), and H, K, and
I, J are obtained (step S8), and l, m, n for each work day are obtained according to the equations (1), (2), (3) (step S9).

Then, the days in which the distances of the three values l, m and n are all the same are searched (step S10). As a result, for example, when l, m, and n are all the same on the Xth day and the X + Yth day (step S11), based on these, work cycle period: X + Y-1 cycle days: Y weld ring number ( (Number of times): Z Welding efficiency: Z / Y is calculated (step S12) and displayed on the monitor.

Assuming that the welding work for connecting the pipes makes one turn around the pipes, it is referred to as "1 ring".
When the welding work is performed for Z rings, the welding efficiency is Z /
Displayed as Y (ring / day). In addition, the total number of construction days for the total length of construction is displayed in all processes, for example, a bar chart or a graph-type process chart.

The cycle period of the work is, for example, when the values of l, m and n are the same on the Xth day and the X + Yth day in step S7, that is, (l _X , m _X , n _X ) =
In the case of (l _{X + Y} , m _{X + Y} , n _{X + Y} ), it means that the construction is performed with one cycle from the Xth day to the X + Y−1th day.

Regarding the calculated cycle period, number of cycle days, number of welding rings, and welding efficiency, it is judged whether or not this is the optimum condition for making the cost the minimum value based on the shortened construction period, manpower, and reduction of construction equipment ( (Step S13), if it is not optimal, return to Step S7 and repeat the above-mentioned process, and if it is optimal, formulate an optimal construction plan based on this (Step S14), and based on this, create a coordinate-based process schedule. create
(Step S15).

FIG. 6 shows a maximum excavation distance of 56 m, one cycle of working process is 8 days, of which 5 days are excavation days and 3 days are backfilling days.
It is explanatory drawing which shows an example of the process table of a day, and the horizontal axis | shaft shows the working day (day), and the vertical axis | shaft has shown the construction extension distance (m). In the figure, p is an excavation process, q is a backfilling process, the hatching part is a welding process, and the □ part is a pipe hanging process. For excavation and backfilling, one 0.45m ³ class backhoe will be used.

Next, as shown in FIGS. 1, 2 and 3, the road occupation section length L determined by the simulation result is set on the actual road, and the green signal lighting time, blue and red signal lighting of the temporary traffic signals 3 and 4 are set. Construction will be carried out within the road-occupied section 2 while controlling the cycle time. At the same time, the vehicle detectors 5 and 6 detect the vehicle, and the arithmetic and control unit 7 sets the green signal lighting time of the temporary traffic lights 3 and 4 and lights the blue and red signals so that the vehicle service rate becomes high based on the actual data. The cycle time and the shortened length or the extended length of the road occupation section length L are obtained, and the value based on the simulation result is corrected accordingly. At the same time, using this as the actual value, the simulation device is made to perform learning in order to eliminate the deviation amount between the simulation result and the actual result.

Next, comparing the road occupation section lengths before and after learning, the results are as shown in FIGS. 7 and 8. FIG. 7 is a process chart before learning, that is, a process chart defined by simulation results, and FIG. 8 is a process chart after learning. As is clear from this, before the study, the road occupancy section length was 60m and the excavation distance was 36m.
After learning, the length of the occupied section of the road was 80 m and the excavation distance was 56 m, which shows that the work efficiency can be greatly improved. Moreover, the vehicle service rate can be improved at the same time.

[0022]

As described above, in the road construction process management system according to the present invention, the length of the road occupation section is properly determined based on the number of vehicles waiting at each temporary traffic signal installation position. The present invention has an excellent effect such that the digging distance under the occupied section length and the construction cycle period can be obtained to greatly improve the construction progress.

[Brief description of drawings]

FIG. 1 is a schematic side view of a road to which a road construction process management system according to the present invention is applied.

FIG. 2 is also a schematic plan view of a road.

FIG. 3 is an explanatory diagram showing an outline of work in a road occupied section.

FIG. 4 is a flowchart showing a simulation process of road occupation section length setting and road construction process management.

FIG. 5 is a flowchart showing a simulation process of road occupation section length setting and road construction process management.

FIG. 6 is an example of a road construction process chart.

FIG. 7 is a process chart of road construction before learning.

FIG. 8 is a process chart of road construction after learning.

[Explanation of symbols]

 1 Road 2 Road occupancy section 3,4 Temporary traffic light 5,6 Vehicle detector 7 Security section 8 Excavation section

Claims (1)

[Claims] 1. A road occupying section is set in a part of the width of the road, and one-sided traffic control for vehicles is carried out at the rest of the width of the road by temporary traffic lights installed on extensions of both ends of the road occupying section. , Construction work in the section occupied by the road,
It is a road construction process management system that moves along the road along the road occupying section as the construction progresses.
Means for determining the vehicle arrival rate at each temporary traffic signal installation position based on the bidirectional vehicle traffic volume data obtained in advance on the road, and means for setting the blue lighting time of each temporary traffic signal based on this vehicle arrival rate, Means for comparing the vehicle arrival rate with a predetermined allowable number of waiting vehicles and determining a road occupation section length based on the result of the comparison, and the road based on the set road occupation section length and a predetermined safety distance A road construction process management system comprising: a means for obtaining a maximum possible excavation distance within a private section; and a means for obtaining a construction cycle period based on the maximum possible excavation distance.