CN207749542U - It is close to subway basement paving sodium-based bentonite waterproof carpet structure - Google Patents

Abstract

The utility model is related to one kind being close to subway basement paving sodium-based bentonite waterproof carpet structure; wall is protected including ground-connecting-wall, retaining wall column, concrete building block; between the ground-connecting-wall medial surface, retaining wall cylinder and concrete building block protection wall and ground-connecting-wall and the equal paving sodium-based bentonite waterproof carpet of retaining wall column beam bottom, and sodium-based bentonite waterproof carpet protects wall to combine closely integrally with ground-connecting-wall and retaining wall column beam, concrete building block." unification of two walls " basement waterproofing to being close to subway uses waterproof material-sodium-based bentonite waterproof carpet; it combines closely integrally with ground-connecting-wall and retaining wall column beam, concrete building block protection wall; with puncture-resistant, water-swellable, self-closing joint function; waterproof effect is good, and constitution optimization, it is easy for construction, shorten the construction period, save cost and it is environmentally protective the features such as.

Description

It is close to subway basement paving sodium-based bentonite waterproof carpet structure

Technical field

The utility model is related to a kind of waterproof constructions of outer wall of basement, especially a kind of to be close to what subway basement was spread The waterproof construction of " unification of two walls " outer wall of basement.

Background technology

Certain engineering is to integrate the integrated project of the functions such as house, business, food and drink and office, overall floorage about 10.8 Ten thousand m2, about 2.4 ten thousand m2 of under ground portion construction area, two layers of underground, digging depth 11.9m, project is close to subway station and area Between tunnel, basement one and station channel unicom, and many places are combined with subway entrance, subway entrance diaphram wall is close to Foundation pit east side；There is subway ventilating shaft in foundation pit southern side, and away from foundation pit southern side most nearby about 9.4m, local subway station diaphram wall is close to Foundation pit southern side, for foundation pit enclosure body away from tunnel sideline most nearby only 14.5m, which is level-one.Due to adjacent Subway is in operating status, may all be impacted to it if excavation of foundation pit is improper.Therefore, it is necessary to be managed in strict accordance with subway single Position and design requirement are constructed.

This project basement is particularly important to its external wall waterproof close to running subway station and running tunnel.If going out Existing percolating water can cause subway sedimentation and horizontal displacement to transfinite, and subway circulation safety can be influenced when serious.But currently due to Various reasons, the different degrees of through crack of reinforced concrete basement generally existing and percolating water phenomenon, and difficulty of prevention and cure is very big.For " unification of two walls " outer wall of basement generally can only constantly be squeegeeed plugging leaks within the construction time with materials such as epoxy resin grouts；If Xiao Ming Ditch, drain pipe, water storehouse and build baffle wall by laying bricks or stones.For a long time in the outer force effect such as Water And Earth Pressures, concrete expands with heat and contract with cold and moisture expansion and drying shrinkage item It under part, has certain through crack and occurs and percolating water, reinforcing bar in corrosion wall influences the risk of shelf-life and Environmental security In the presence of.

Invention content

The utility model is to solve kind to be close to the waterproof problem that subway basement spreads " unification of two walls " outer wall of basement, And one kind is provided and is close to subway basement paving sodium-based bentonite waterproof carpet structure.

To achieve the above object, the technical solution adopted in the utility model is：One kind being close to subway basement paving sodium base Bentonite waterproof blanket structure, including ground-connecting-wall, retaining wall column, concrete building block protection wall, the ground-connecting-wall medial surface, retaining wall cylinder and concrete Building block is protected between wall and ground-connecting-wall and the equal paving sodium-based bentonite waterproof carpet of retaining wall column beam bottom, and sodium-based bentonite waterproof carpet and Ground-connecting-wall and retaining wall column beam, concrete building block protection wall are combined closely integrally.

The sodium-based bentonite waterproof carpet transverse lap length is 300mm, and lap width is 100mm between width；Adjacent two width Sodium-based bentonite waterproof carpet transverse lap stitches the 600mm that is staggered；The sodium-based bentonite waterproof carpet overlapping the slot of corner is not small from turning In 500mm.

Uniformly paving smears bentonite clay to two layers of sodium-based bentonite waterproof carpet between overlapping part, and steel nail and not is used in combination Rust steel washer is fixed.

The concrete building block protection wall is concrete block wall, and concrete block wall side is planted with retaining wall column joint6@500mm reinforcing bars, reinforcing bar kind enter depth >=100mm, anchor into concrete block wall >=1000mm；Wall is protected in the concrete building block Wall in constructional column is set, column bottom, the capital of constructional column plant with the Bar Anchorage of column muscle same specification, protected in concrete building block Setting in " brick beam " at the wall 1.8m height of wall 10mm horizontal reinforcements, and planted inside constructional column both sides6@ 500mm reinforcing bars,6@500mm reinforcing bars enter ground-connecting-wall 100mm, and both sides enter concrete building block protection wall 1000mm.

The sodium-based bentonite waterproof carpet is to receive base swelling by non-woven geotextile and plastic flat wire braided geotextiles package Blanket waterproof layer made of soil particle needle thorn, expansion index >=24ml/g, infiltration coefficient≤5.0x10-11m/s, tension Intensity >=6KN/m, peel strength >=0.4KN/m, elongation >=10% under peak load, resistance to hydrostatic pressure is in 0.4Mpa, 1h, without oozing Leakage.

The utility model has the beneficial effects that：

To " unification of two walls " outer wall of basement waterproofing process, using ground-connecting-wall, the retaining wall for being laid with sodium base bentonite waterproof blanket The construction of column beam+sodium base bentonite waterproof blanket+masonry protective layer is than previous ground-connecting-wall, retaining wall column beam+draining Xiao Ming ditch, hydrophobic It manages, the construction of water storage cabin+baffle wall, simple structure, easy construction, saving cost, good water-proof effect, and project can be exempted to make It is a kind of technological progress with the management and maintenance of percolating water in the process.

" unification of two walls " outer wall of basement waterproof uses inside paving sodium-based bentonite waterproof carpet, has puncture-resistant, meets water Expansion, self-closing joint function, waterproof effect is good, and constitution optimization, it is easy for construction, shorten the construction period, save cost and environmentally protective The features such as, through engineering practice by subway, basement uses the several months, does not find percolating water, can be applicable on similar projects.

Description of the drawings

Fig. 1 is to be close to subway basement paving sodium-based bentonite waterproof carpet structural facades figure；

Fig. 2 is to be close to subway basement paving sodium-based bentonite waterproof carpet structural plan figure；

Fig. 3 is " unification of two walls " outer wall of basement fish tail and waterproof layer bar planting schematic diagram.

Specific implementation mode

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

Such as Fig. 1, shown in 2, one kind being close to subway basement paving sodium-based bentonite waterproof carpet structure, including ground-connecting-wall 1, shield Pilaster 2, concrete building block protection wall 4, sodium-based bentonite waterproof carpet 3 etc..

It is spread with 2 beam bottom of retaining wall column with ground-connecting-wall 1 between 1 medial surface of ground-connecting-wall, 2 face of retaining wall column and concrete building block protection wall 4 Sodium-based bentonite waterproof carpet 3 is pasted, and sodium-based bentonite waterproof carpet 3 and 2 beam of ground-connecting-wall 1 and retaining wall column, concrete building block protection wall 4 are close It is combined into one.

In 1 inside paving of the ground-connecting-wall a kind of waterproof material-sodium base bentonite waterproof blanket 3 of " unification of two walls ", receive Base bentonite waterproof blanket 3 is pierced by non-woven geotextile and 5 needle of plastic flat wire braided geotextiles package sodium base bentonite particle Blanket waterproof material, can water-swellable, form stable gelinite, expansion index >=24ml/g, infiltration coefficient≤ 5.0x10-11m/s, tensile strength >=6KN/m, peel strength >=0.4KN/m, elongation >=10% under peak load, resistance to hydrostatic It is pressed in 0.4Mpa, 1h, ne-leakage.With puncture-resistant, self-healing, self-closing joint function, easy construction is applied widely.It can be securely Adhere on the inside of outer wall of basement, buttress and beam, in the case where masonry protects lamination shelves, make outer wall of basement and retaining wall column beam --- it receives Base bentonite waterproof blanket ----masonry protective layer is combined closely integral, obtains good water-stagnating effect.

One, sodium-based bentonite waterproof carpet socket part position paving：

(1) sodium-based bentonite waterproof carpet transverse lap length is 300mm, and lap width is 100mm between width.

(2) adjacent two width sodium-based bentonite waterproof carpet transverse lap stitches the 600mm that should be staggered.The sodium base of fundamental aspect corner Bentonite waterproof blanket overlapping the slot should be not less than 500mm from turning.

(3) it should uniformly be spread between two layers of sodium-based bentonite waterproof carpet of overlapping part and smear bentonite clay, steel nail and not is used in combination Rust steel washer is fixed, nail spacing：Wall top and beam bottom are 30cm, and metope and armlet cylinder are 30cm, and bottom plate bottom is 100cm.Wall Top, beam bottom overlapping the slot and end edge should also add fixed aluminium layering, with steel nail stickfast.Two, retaining wall column, constructional column plant steel tie

It waits protective layers generally all higher in view of concrete building block protection wall 4, and requires protective layer wall that should closely be tied with waterproof blanket It closes, for this purpose, the sides such as every concrete block wall are both needed to plant with retaining wall column joint6@500mm reinforcing bars 7, are planted into depth Not less than 100mm, anchors into blockwork and be not less than 1000mm.According to detailing requiments, should be arranged in the wall of concrete building block protection wall 4 Constructional column 6, column bottom, capital are both needed to the Bar Anchorage of plantation and column muscle same specification, while in the thick " bricks of wall 1.8m height 30mm Setting in lintel "10 horizontal reinforcements, brick beam 1:3 cement mortar beams (see Fig. 3), are planted inside 6 both sides of constructional column6@500mm reinforcing bars 7, enter ground-connecting-wall 100mm, and both sides enter to protect wall 1000mm.

Claims (5)

1. one kind being close to subway basement paving sodium-based bentonite waterproof carpet structure, including ground-connecting-wall, retaining wall column, concrete building block protection Wall, it is characterised in that：Between the ground-connecting-wall medial surface, retaining wall cylinder and concrete building block protection wall and ground-connecting-wall and retaining wall column beam bottom Equal paving sodium-based bentonite waterproof carpet, and sodium-based bentonite waterproof carpet and ground-connecting-wall and retaining wall column beam, concrete building block protection wall are close It is combined into one.

2. according to claim 1 be close to subway basement paving sodium-based bentonite waterproof carpet structure, it is characterised in that：Institute Sodium-based bentonite waterproof carpet transverse lap length is stated as 300mm, lap width is 100mm between width；Adjacent two width sodium bentonite Waterproof blanket transverse lap stitches the 600mm that is staggered；The sodium-based bentonite waterproof carpet overlapping the slot of corner is not less than 500mm from turning.

3. according to claim 2 be close to subway basement paving sodium-based bentonite waterproof carpet structure, it is characterised in that：Two Uniformly paving smears bentonite clay to the layer sodium-based bentonite waterproof carpet between overlapping part, is used in combination steel nail and stainless steel washer solid It is fixed.

4. according to claim 1 be close to subway basement paving sodium-based bentonite waterproof carpet structure, it is characterised in that：Institute It is concrete block wall to state concrete building block protection wall, and concrete block wall side is planted with retaining wall column joint6@500mm steel Muscle, reinforcing bar kind enter depth >=100mm, anchor into concrete block wall >=1000mm；It is arranged in the wall of the concrete building block protection wall Constructional column, column bottom, the capital of constructional column plant with the Bar Anchorage of column muscle same specification, protect the wall 1.8m of wall in concrete building block Setting in " brick beam " at height10mm horizontal reinforcements, and planted inside constructional column both sides6@500mm reinforcing bars, 6@500mm reinforcing bars enter ground-connecting-wall 100mm, and both sides enter concrete building block protection wall 1000mm.

5. described being close to subway basement paving sodium-based bentonite waterproof carpet structure, feature according to claim 1-4 is any It is：The sodium-based bentonite waterproof carpet is to wrap up sodium base bentonite by non-woven geotextile and plastic flat wire braided geotextiles Blanket waterproof layer made of grain needle thorn, expansion index >=24ml/g, infiltration coefficient≤5.0x10-11m/s, tensile strength >=6KN/m, peel strength >=0.4KN/m, elongation >=10% under peak load, resistance to hydrostatic pressure is in 0.4Mpa, 1h, ne-leakage.