JPH073740A - Artificial ground - Google Patents

Abstract

PURPOSE:To provide a structure of an artificial ground including a landing- bridge structure. CONSTITUTION:Beam members 14 made of precast concrete are disposed among bearing piles disposed at a predetermined distance to one another, and floorboard members 16 each having cross beams initially added thereto are fitted among and integrated with the precast concrete beam members 14. The precast concrete beam members 14 and the floorboard members 16, both of which are initially fabricated at a factory or the like, are conveyed to a construction site and the precast concrete beam members 14 are held in place among the bearing piles driven in place, and then the cross-beam-equipped floorboard members are fitted among the beam member 14 and finished with cast-in-place concrete to construct an artificial ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial ground, and more particularly to a structure of artificial ground including a jetty structure.

[0002]

2. Description of the Related Art Generally, in a pier structure installed in an artificial ground, for example, in a coastal water area, vertical and horizontal beam members are erected on steel pipe piles which are placed at predetermined intervals, and then A floor portion as a superstructure is formed on these beam members by using cast-in-place concrete or steel plate members. However, it has been pointed out that the artificial ground constructed in this manner has various problems to be solved, such as a large-scale construction work, a long construction period, and a high cost.

[0003]

According to the present invention, therefore, a floor plate having precast girder members mounted and fixed between support pile members spaced apart by a predetermined distance, and transverse girders previously attached between these precast girder members. By adopting a structure in which members are fitted and integrated, the construction work is facilitated and the construction cost is reduced.

In this case, the precast girder member is composed of a concrete girder body in which a head insertion hole of the support pile member is formed on one end side and a floor plate supporting step is formed.
By adopting a configuration in which the web member is exposed along the longitudinal direction of the upper surface of this concrete girder main body, it is possible to perform the work of connecting with the adjacent concrete girder material and fitting the floor board member between the concrete girder materials. It can be done efficiently.

Further, as the floor plate member, a transverse girder is integrally formed on one of opposite side edge portions of the rectangular floor plate, and a connecting mounting plate is projected on the other opposite side edge portion. By doing so, it is possible to preferably perform integration with the precast girder member.

[0006]

In the artificial ground according to the present invention, the precast girder member and the floor plate member with the horizontal girder, which are manufactured in advance in the manufacturing yard near the factory or the construction site, are carried into the site and supported by the pile driving device. The precast girder member is mounted and fixed between the pile members, and then the floor plate member with the horizontal girder is fitted and integrated to construct the structure.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a jetty structure will be illustrated as a preferred embodiment of the artificial ground according to the present invention, and will be described in detail below with reference to the accompanying drawings.

As a preferred embodiment of the present invention, the pier structure 1
As shown in FIG. 1, 0 is mounted and fixed with the unitized precast concrete girder member 14 on the steel pipe piles 12 and 12 arranged at a predetermined distance using an appropriate pile driving device. It is basically constructed by fitting a floorboard member 16 with horizontal girders, which is also unitized, between the precast concrete girder members 14 and integrating them.

That is, in the precast concrete girder member 14, as shown in FIG. 2, a head insertion hole 20 of the steel pipe pile 12 is formed on one end side of the girder body 18 and a male umbilicus 22 is projectingly provided. Further, a supporting step portion 24 for supporting the end portions of the floor plate member 16 and the adjacent girder member 14 is formed in the lower portion. Also, on the other end side of the girder body 18,
A female umbilicus 26 for fitting the male umbilicus 22 formed in a separate girder body 18 is provided, and a part of the web member 28 is exposed along the longitudinal direction of the upper surface of the girder body 18. To do. In this case, the head insertion hole 20 is formed by a tubular member (not shown) having a diameter slightly larger than that of the steel pipe pile 12, and the web member 28 is configured to embrace the tubular member.

A through hole 30 is provided in a portion of the girder body 18 corresponding to each umbilicus 20, 26 in a direction orthogonal to the longitudinal direction of the girder body 18, and the precast girder member 14 itself and this precast girder member are provided. 14 and the separate precast girder member 14 mounted on the supporting step portion 24 of the through hole 30.
It is configured so that the tightening tool 32 inserted in the can tightens.

On the other hand, as shown in FIG. 3, the floor plate member 16 is formed by integrally forming the horizontal girders 36, 36 on the lower portions of both sides of one side of the rectangular rectangular floor plate body 34 made of concrete and facing each other. The connecting mounting plates 38 are provided on the edge portion at a predetermined interval, and the suspension hanging ring 40 is disposed on the upper surface.

In the jetty structure 10 constituted by such members, specifically, the cap member 42 is first attached to the head of each steel pipe pile 12. Next, a starting girder member 44 formed in the same manner as the precast girder member 14 except that the insertion holes 20 and 20 are provided at both ends is attached to the heads of the predetermined steel pipe piles 12 and 12. At this time, the starting girder member 44 is held in a state where the head portion (cap member 42) of the steel pipe pile 12 is in contact with the lower surface of the web member 28, and the tightening stopper 32 inserted into the through hole 30 is used. Can be held tightly easily.

Next, the floor board member 16 is lifted up and dropped between the starting girder members 44, 44, and the lateral girders 3 at the lower portions on both sides thereof.
6, 36 are placed on the supporting step portion 24 of the starting girder member 44, and each connecting mounting plate 38 and the web member 28 of the girder member 44 are mounted.
And are integrated by welding through the connecting plate 46,
In addition, mortar and cast-in-place concrete are filled in the gap (see Fig. 4).

Then, after a new steel pipe pile 12 is staken by using this starting portion as a scaffold, precast girder members 14 are attached to the heads of these steel pipe piles 12, and the floor plate member 16 lifted up is used as the girder member 14. , 14 and the horizontal girders 36, 36 on both lower sides thereof are placed on the supporting step portion 24, and the connecting mounting plates 38 and the web members 28 of the girder members 44 are connected via the connecting plates 46. The work of filling the gaps with mortar and arranging auxiliary reinforcing bars (not shown) between the floor plate member 16 and the web member 28 of the girder member 44 and integrating them with cast-in-place concrete may be sequentially performed.

As an alternative for connecting the floor plate member 16 and the girder member 44 (or 16), as shown in FIG. 5, embedded bolts 48 are arranged at predetermined positions of the girder member 44 and the floor plate member 16 is provided. If the comb-toothed plate member 50 is also provided and the embedded bolt 48 is inserted into the gap of the comb-toothed plate member 50 and fixed by the holding plate 52 and the nut 54, the connection can be achieved. It is preferable because the strength can be increased.

Further, the connection between the starting girder member 44 and the precast girder member 14 or adjacent girder members 14 is as follows.
The male umbilicus 22 and the female umbilicus 26 are aligned and tightened by the tightening stoppers 32 inserted in the through holes 30, while the adjacent floor board members 16 are connected to each other by connecting the end portions of the floor board members 16. The embedded bolts placed in Step 1 may be fixed with waterproof packing, a pressure plate and nuts and covered with cast-in-place concrete (not shown).

Further, the construction work is further facilitated by placing a movable work carriage on the web member 28 for the work of placing the steel pipe pile 12 after the starting portion, the work of hoisting, mounting or dropping each member. Can be converted.

[0018]

As described above, according to the artificial ground of the present invention, the unit members such as the precast girder member and the floor plate member which are manufactured in advance in the manufacturing yard near the factory or the construction site, After mounting, fixing or fitting between the piled support pile members, they are simply integrated with cast-in-place concrete, so construction work can be performed quickly and easily, and the construction period can be shortened. It has various advantages such as reduction.

The pier structure has been illustrated and described as a preferred embodiment of the artificial ground according to the present invention.
The present invention is not limited to this example, and can be suitably applied to, for example, port facilities such as revetment quay walls, land creation such as on soft ground, and the like without departing from the spirit of the present invention. Of course, design changes can be made.

[Brief description of drawings]

FIG. 1 is a pier structure as an embodiment of an artificial ground according to the present invention, in which a is a side view and b is a plan view.

2 is a precast girder member used for the pier structure shown in FIG. 1, a is a partially omitted side view showing a relationship with a steel pipe pile, and b is an explanatory plan view of a.

3A and 3B are floor plate members used for the pier structure shown in FIG. 1, where a is a side view and b is a plan view.

FIG. 4 is an explanatory view showing a connection structure between a precast girder member and a floor plate member in the jetty structure shown in FIG.

5A and 5B are explanatory views showing another embodiment of the connection structure between the precast girder member and the floor plate member in the pier structure shown in FIG. 1, a is a sectional explanatory view, and b is a plan explanatory view.

[Explanation of symbols]

10 Pier structure, 12 Steel pipe pile, 16
Floor board member, 14 precast concrete girder member, 18 girder body, 20 head insertion hole, 2
2 male umbilicus, 24 supporting step, 26 female umbilicus, 28 web member, 30 through hole, 3
2 Stoppers, 34 Floor plate body, 36
Cross girder, 38 connecting plate, 40 suspension ring,
42 cap member, 44 starting girder member, 46
Connecting plate, 48 embedded bolts, 50 comb-toothed plate members, 52 holding plate, 54 nuts,

Claims (3)

[Claims] 1. A precast girder member is mounted between support pile members arranged at a predetermined distance, and a floorboard member provided with a transverse girder is fitted between these precast girder members to integrate them. An artificial ground characterized by that. 2. The precast girder member is composed of a concrete girder body having a head pile insertion hole for a support pile member at one end and a floor plate supporting stepped portion, and an upper surface longitudinal direction of the concrete girder body. The artificial ground according to claim 1, which is configured by exposing a web member along a direction. 3. The floor plate member is formed by integrally forming a transverse girder at one of opposite side edge portions of a rectangular floor plate and projecting a connecting mounting plate at the other opposite side edge portion. The artificial ground according to claim 1 or 2, wherein