CN203174619U

CN203174619U - Reverse raft concrete terrace

Info

Publication number: CN203174619U
Application number: CN 201320054210
Authority: CN
Inventors: 管自立
Original assignee: 管自立; 管光宇
Priority date: 2013-01-22
Filing date: 2013-01-22
Publication date: 2013-09-04
Anticipated expiration: 2023-01-22

Abstract

The utility model provides a building terrace suitable for soft foundation soil or coastal reclaimation dredger fill, and the building terrace is a reverse raft concrete terrace integrated with frame columns in a pouring mode. Ribbed beams are arranged under the concrete terrace and arranged among the frame columns under the terrace to form grating-shaped gridding beams. Backfill is placed and tamped in gratings, and due to the resistance effect of the side walls of the gratings, a soil arch effect of the backfill is generated, and ground sinking is avoided. When the size of the grating is too large or the backfill is too thick or using load is large, processing should be carried out matching with a foundation. By means of the reverse raft concrete terrace, terrace sinking and cracking problems can be solved in one time, functions of a reverse raft foundation are achieved, building safety is improved, and the sinking control ability is improved. When a pile cap under the terrace is buried shallowly, original pile cap connecting beams can be ascended to be used as raft ribbed beams. The reverse raft concrete terrace can be widely applied to indoor terrace structures of industrial plants on soft soil foundations.

Description

The board concrete of falling raft terrace

Technical field

The utility model relates to the terrace structure of soft foundation construction work.

Background technology

In recent years along with coastal enclose and cultivate make ground engineering construction development, because though the barged-in fill of enclosing and cultivating is handled through vacuum preloading, but still be in high-compressibility, mobile state, it down be again special weakness, deep, mud, soft clay foundation, and, often natural terrace face is low also will the several meters artificial backfill of large tracts of land, and this just causes the serious depression of indoor terrace, and really connecing influences building and normally use.

For solving this engineering problem, the employing cement that has stirs and carries out ground stabilization or cooperate other rigid pile to handle; Not only disposal cost is big, and effect is not remarkable; Be difficult to sinking and cracking of disposable solution terrace, even need make repeatedly repairing and reinforcement and directly influence production.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of board concrete of falling raft terrace that can be applicable to barged-in fill, weak foundation soil is provided.

Technical scheme to be solved in the utility model is: a kind of plate of falling raft terrace, comprise the steel concrete terrace, and the bottom of described steel concrete terrace is with the orthogonal grid girt strip.

The further technical scheme of the utility model is: described orthogonal grid girt strip is to connect each upright of frame.Grade beam that described grid girt strip is original pile cap rise or after the intercolumniation tie-beam set up.

The counterdie of this girt strip utilizes the place backfill first time to tamp and does basic unit, constitutes netted grid type by girt strip with whole the watering of post, carries out making the terrace fetal membrane after artificial densification, compacting slabstone, the depression firmly of ballast bath filling sand in grid.Casting reinforced concrete terrace and constitute inverted raft foundation with girt strip, post are whole then.

Because the densification of backfill, the squeezed grid girt strip that makes produce the sidewall frictional resistance, backfill interior formation donor stress (claiming the grid effect again) is played prevent that backfill from sinking, the sinking effect; When its grid size is big or place backfill amount is thicker or service load is bigger, need to cooperate ground to handle as apply cement mixing pile or other rigid pile consolidated subsoil soil.

The utility model beneficial effect: the sagging and cracking of the disposable solution concrete floor of its energy; It forms one and is inverted raft foundation simultaneously, and it can improve the degree of safety and control sedimentation capacity of building.Have cost economic and a raft two functions.

The utility model is described in further detail below in conjunction with the attached and specific embodiment.

Description of drawings

Fig. 1 is the schematic diagram of a kind of embodiment of the utility model board concrete of falling raft terrace.

Fig. 2 is the sectional drawing of the board concrete of falling raft terrace.

Illustrate among the figure: 1. concrete raft plate, 2 raft rib of slab beams, 3. upright of frame, 4. pile cap, 5. cement mixing pile, 6. backfill for the first time, 7. backfill, 8. girt strip sidewall frictional resistance for the second time.

The specific embodiment

As shown in Figure 1 and Figure 2, the present embodiment board concrete of falling raft terrace comprises concrete raft plate 1, and the raft rib of slab beam 2 that concrete raft plate bottom is connected with frame column, girt strip adopt the linking beam between the stake that grade beam rises or other arranges that links of original pile cap.

When being somebody's turn to do the enforcement of the board concrete of falling raft terrace, insert cement mixing pile 5 at terrace 1 lattice middle part in advance, the requirement that the spacing that its cement stirs and quantity should satisfy the terrace design bearing capacity, its degree of depth is generally 12-15 rice, carry out backfill 6 first time after treating cement mixing pile and mud, barged-in fill solidification-stable and reaching intensity again, press operation then and implement:

1. whole pile foundation support table and the framework lower prop (doweling in advance) of watering is at the bottom of the girt strip;

2. whole girt strip (stirrup exposes) and the framework lower prop of watering is to terrace;

3. carrying out second time backfill in grid tamps to terrace;

4. the upper and lower plate muscle of terrace passes girt strip top and puts in order and water with girt strip bearing rod, stirrup.

Claims

1. the board concrete of falling a raft terrace comprises the concrete raft plate, it is characterized in that: described raft strip has girt strip.

2. according to the described board concrete of falling the raft terrace of claim 1, it is characterized in that: described raft rib of slab beam connected frame trestle.

3. according to claim 1 or the 2 described board concrete of falling raft terraces, it is characterized in that: described terrace is the inversion raft foundation of horizontally-arranged steel concrete on backfill.