KR20020042316A - Constructing method for the filling out abutement of bridge and its structure - Google Patents

Abstract

PURPOSE: A process for producing abutment back-filing drainage of bridge and a structure for the same are provided by minimizing earth pressure-resistance by water inflow generated behind of the abutment to extend public time of the bridge and to easily manage the bridge. CONSTITUTION: The process comprises steps of: building riverbank portions at both sides of the bridge; striking and inserting a steel H pile(50) into a support layer by a base pile to support the abutment(100); forming a cast for the drainage at the riverbank side and introducing a concrete to produce a base portion(10) provided with the abutment drainage(20); introducing the concrete to complete the abutment; forming stepwise filled portion on the base side to form a 'U' shaped precast water route drainage(30); and forming a hollowed pipe(40) at a position with reduced earth pressure-resistance on step portions of the drainage.

Description

Constructing method for the filling out abutement of bridge and its structure}

The present invention relates to a bridge drainage construction method and its structure that can be applied to a general bridge, and to minimize the earth pressure resistance caused by the inflow water generated on the back of the bridge to extend the common life of the bridge and easy backfill of the bridge easy to maintain It relates to a drainage construction method and its structure.

Conventional general bridges complete the wall shift over the pile after installing the multi-row support piles on the shift. At this time, if a pier exists, the bearing was installed on the upper part of the pier, and the construction was performed to mount the mold.

Since the bridge is designed to resist dead load, live load, earth load and earth pressure in the shift, the alternating sphere is very large and the alternating sphere is a floating structure that does not allow displacement. The alternating support piles are used to support their own weight.

Since such shifts are adjacent to the road, there is a problem that may cause a displacement of the structure due to the earth pressure generated due to the loss of the incoming water at the same time the construction in consideration of the weight and soil pressure of the soil.

In addition, the conventional shift backfill is used to form a drainage, but there is a problem close to the role of the drainage in a state close to the form rather than to serve as a drainage.

Accordingly, the present invention has been made in view of the conventional problems, and an object of the present invention is to minimize the earth pressure resistance caused by the inflow water generated on the alternating back surface to extend the common life of the bridge and easy to maintain the alternating backfill drainage construction method of the bridge And to provide a structure.

Another object of the present invention is to provide a structure for minimizing earth pressure caused by lost water acting on the alternating.

The present invention for achieving the above object was achieved by constructing the alternate drainage path to extend the bridge life by minimizing the damage of the structure due to the change in earth pressure by the inflow water in the alternating portion of the small, large bridge.

In addition, the present invention the construction step of the filling process of both sides of the bridge embankment; A construction step of driving the steel H pile into the support layer as a foundation pile used to support the shift; A step of constructing an alternating foundation portion in which a drainage path is formed by pouring concrete by forming a formwork to form drainage on the embankment side when the foundation concrete is poured into the steel H pile; Placing shifts in concrete to complete the shifts; A step of constructing a "∪" -type precast raceway drain pipe mounted on the bottom of the back fill with the use of a back fill material having a large porosity on the bottom to form a stepped compaction on the base surface; The construction of drainage pipes was carried out in the step of constructing the perforated pipe at the position of small earth pressure resistance in the upper part of the stairs to achieve the rapid drainage and the alternating drainage of the bridge that can discharge a large amount of influent.

1 is a cross-sectional view showing the structure by the alternating backfill drainage construction method of the bridge of a preferred embodiment of the present invention,

Figure 2 is a perspective view showing the structure of the alternating backfill drainage construction method of the bridge of the preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: shift foundation 20: shift drain

30: drainage path of "U" type concrete structure 40: perforated pipe

50: pile 60: backfill

70: beam 100: shift

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 2, the drainage construction method of the bridge of the present invention is a construction step of the fill process of the bridge embankment on both sides of the bridge; A construction step of driving the steel H pile 50 into the support layer as a foundation pile used to support the shift; A step of constructing a foundation on which the alternating drainage part 20 is formed by forming a formwork so as to form a drainage on the embankment side when the alternating foundation part 10 concrete is poured into the steel H pile; Placing shifts in concrete to complete the shifts; A step of constructing a "∪" -type precast raceway drain pipe 30 mounted on the bottom of the back filling together with the use of a back filling material having a large porosity on the bottom to form a stepped compaction on the base surface; The drainage passage was completed in the step of constructing the perforated pipe 40 at a position where the earth pressure resistance was small in the step portion of the upper end.

First, the alternating embankment construction step has a predetermined waiting period for checking the stability and residual settlement of the ground formed up to the planned height. After confirming the abnormality of the fill part, the H-type pile is driven through to the support layer and the pile is generally installed in a line in order to secure the flexibility required for displacement.

When the alternating foundation 20 is installed, the pile is driven until a sufficient design allowable bearing force can be secured, and then the head of the pile 50 is embedded to install the lower alternating foundation 10 in the concrete foundation. Forming a form to form a drainage channel 20 on the top to form a "U" type drainage to discharge the inflow water flowing from the bridge to minimize the displacement of the shift by reducing the earth pressure.

Next, after the completion of the construction of the shift 100 wall is installed as a drainage of the staircase structure on the rear of both shift walls before the back filling operation, and the bottom portion of the shift back fill to form a drainage 20 of the "U" -type concrete structure And the stepped structure which built the perforated pipe 40 installed in the said upper step part was formed.

Rainfall penetrates the backfill portion 60 and alternately, the rainwater penetrating into the bottom concrete structure drainage drains out of the bridge quickly without accumulating in the backfill portion, thereby minimizing the effect of earth pressure due to water pressure.

On the other hand, the perforated pipe 40 is installed in a place where the pressure of the earth pressure is small, after installing the perforated pipe close to the side of the road to construct the backfill.

As the backfill material, a material having a large particle, a small adhesive force, and a large internal friction angle was used to drain well.

For example, the present invention is not limited to the above-described embodiment, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Such changes are intended to be within the scope of the present invention.

As described through the above embodiment, the present invention minimizes the displacement caused by the inflow water flowing into the backfill portion of the medium, small and large bridges, and alternates the drainage passages with a more necessary structure in the inflow layer. The structure formed at the base of the shift has the effect of reducing the earth pressure by quickly discharging the upper influent. In addition, it is a very useful invention in the bridge construction industry because it has the effect of extending the life of the bridge including the shift by using a method of adapting the drainage structure and the perforated pipe to the earth pressure by forming the backfill part in a stepped structure.

Claims (3)

Constructing the fill process of both sides of the bridge embankment; A construction step of driving the steel H pile into the support layer as a foundation pile used to support the shift; A step of constructing an alternating foundation portion in which a drainage path is formed by pouring concrete by forming a formwork to form drainage on the embankment side when the foundation concrete is poured into the steel H pile; Placing shifts in concrete to complete the shifts; A step of constructing a "∪" -type precast raceway drain pipe mounted on the bottom of the back fill with the use of a back fill material having a large porosity on the bottom to form a stepped compaction on the base surface; A method of constructing alternating drainage bridges for bridges formed by constructing drainage pipes in a step of constructing a perforated pipe at a position of low earth pressure resistance in a step portion of the upper end thereof. In the shift backfill drainage of the bridge, The alternating backfill drainage structure of the bridge, characterized in that the alternating drainage passage 20 is formed integrally with the shift 100 at the top of the shift base portion 10. 3. The alternating backfill drainage channel of the bridge according to claim 2, wherein the alternating backfill drainage channel is formed in a stepped shape, and at the bottom thereof, a "U" type drainage channel 30 of a concrete structure is formed, Alternate backfill drainage structure of the bridge, characterized in that it has a stepped structure in which the perforated pipe (40).