CN209179029U - A kind of side slope combined bearing structure - Google Patents

Abstract

The utility model discloses a kind of side slope combined bearing structures, the first rank slope branch mask including being from the bottom to top in ladder setting, second-order slope branch mask, third rank slope branch mask, fourth order slope branch mask and the 5th rank slope branch mask, first rank slope branch mask and the 5th rank slope branch mask are gunite concrete mask, and first rank slope branch mask fixed using anchor pole drawknot, the second-order slope branch mask, third rank slope branch mask and fourth order slope branch mask include Vierendeel girder and the armoured concrete slab that is fixed in Vierendeel girder, the Vierendeel girder is fixed by prestress anchorage cable drawknot.The utility model has the advantages that easy for construction, at low cost, supporting intensity is high, safe, achieves preferable social benefit.

Description

A kind of side slope combined bearing structure

Technical field

The utility model relates to a kind of side slope combined bearing structures, belong to technical field of building construction.

Background technique

With the continuous social and economic development, Mountainous Building Engineering Project Construction continuously emerges, especially larger in height difference Mountainous Building in, slope retaining utilizes place at 25-60 meters, and to be maximum, and side slope is also very precipitous, but existing side slope branch Protection structure construction is more troublesome, and construction cost is high, and intensity and safety are poor.

Utility model content

Simple, easy for construction, solid and reliable side slope combined type branch that the purpose of the utility model is to provide a kind of structures Protection structure, to overcome deficiency in the prior art.

The technical solution of the utility model includes: a kind of side slope combined bearing structure, including being from the bottom to top in ladder setting First rank slope branch mask, second-order slope branch mask, third rank slope branch mask, fourth order slope branch mask and the 5th rank slope supporting Face, first rank slope branch mask and the 5th rank slope branch mask are gunite concrete mask, and the first rank slope branch mask uses Anchor pole drawknot is fixed, and the second-order slope branch mask, third rank slope branch mask and fourth order slope branch mask include Vierendeel girder With the armoured concrete slab being fixed in Vierendeel girder, the Vierendeel girder is fixed by prestress anchorage cable drawknot.

Further, the gradient of five branch masks is in 1:0.2~0.5.

Further, it is provided with intercepting ditch at the top of the branch mask of the 5th rank slope, between each rank slope and bottom of slope is provided with row Ditch.

Further, first rank slope branch mask, second-order slope branch mask, third rank slope branch mask, the supporting of fourth order slope Face and the 5th rank slope branch mask are embedded in and are equipped with flexible porous tube.

Further, first rank slope branch mask, second-order slope branch mask, third rank slope branch mask, the supporting of fourth order slope Face and the surface of the 5th rank slope branch mask, which are all made of to hang three dimensional network and sow grass seeds by duster, grass planting protective layer.

Due to the adoption of the above technical scheme, utility model has the advantages that the utility model has easy for construction, cost Advantage low, supporting intensity is high, safe achieves preferable social benefit.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Description of symbols: the first rank of 1- slope branch mask；2- second-order slope branch mask；3- third rank slope branch mask；4- Quadravalence slope branch mask；The 5th rank slope branch mask of 5-；6- intercepting ditch；The gutter 7-；8- frame foundation beam；9- gunite concrete mask； 10- flexible porous tube；11- prestress anchorage cable；12- anchor pole.

Specific embodiment

It is right with reference to the accompanying drawings and examples in order to keep the purpose of this utility model, technical solution and advantage clearer The utility model is described in further detail.

The embodiments of the present invention: the structural schematic diagram of side slope combined bearing structure as shown in Figure 1, include by down toward Upper the first rank slope branch mask 1 in ladder setting, second-order slope branch mask 2, third rank slope branch mask 3, fourth order slope branch mask 4 And the 5th rank slope branch mask 5, first rank slope branch mask 1 and the 5th rank slope branch mask 5 are gunite concrete mask 9, And first rank slope branch mask 1 fixed using 12 drawknot of anchor pole, the second-order slope branch mask 2, third rank slope branch mask 3 and the Including Vierendeel girder 8 and the armoured concrete slab being fixed in Vierendeel girder 8, the Vierendeel girder 8 passes through pre- quadravalence slope branch mask 4 11 drawknot of stress anchor cable is fixed.The gradient of five branch masks is in 1:0.2.The top of 5th rank slope branch mask 5 is set It is equipped with intercepting ditch 6, between each rank slope and bottom of slope is provided with gutter 7.

First rank slope branch mask 1, second-order slope branch mask 2, third rank slope branch mask 3, fourth order slope branch mask 4 with And the 5th rank slope branch mask 5 be embedded in flexible porous tube 10 be installed.First rank slope branch mask 1, second-order slope branch mask 2, the surface of third rank slope branch mask 3, fourth order slope branch mask 4 and the 5th rank slope branch mask 5 is all made of extension three dimensional network and sows grass seeds by duster There is grass planting protective layer.

Sequence of the utility model in Specific construction are as follows: side slope excavation section by section → set up steel pipe frame → slope surface cleaning → the Once it is in place to spray levelling → measurement and positioning → boring machine for element, and → anchor cable (bar) is placed in pore-forming → production → infuses primary slurry → note two Secondary slurry → beam steel peace → billet peace → disturbing concrete → anchorage cable stretching locking → completion → dismounting steel pipe frame.Below Do specific introduction:

1, side slope excavation section by section: side slope earth excavation need to be in strict accordance with reverse construction, multi-stage construction, tensioning fixation rear It can continue to brush slope down.

2, set up steel pipe frame: the construction of engineering needs side slope frame body to set up using steel pipe, platform is completely spread using template, is arranged 2 row's upright bars, upright bar longitudinal pitch 2m, from for 2m, step pitch 2m, the upright bar axis above side slope arrives 2 upright bar horizontal spacings The distance of side slope is no less than 300mm, and according to each rank slope branch mask vertical height segmented-erection, steel pipe frame and side slope carry out rigidity Connection and flexible connection.

3, slope surface cleaning and element spray: slope height is more a height of to ensure construction safety, should carry out after having set up steel pipe frame clear It manages side slope and loosens soil or rubble, and it is levelling to carry out plain pneumatically placed concrete.

4, measurement and positioning: according to each practical excavation slope view of work point, anchor hole position is accurately surveyed by design spacing and size It is placed in slope surface, hole position error must not exceed ± 10mm.

5, boring machine is in place and pore-forming: lattice carry out seat in the plane adjustment, should reach the requirement of " just, flat, steady, solid ", it is ensured that brill It does not wave, shift after machine stress.After drilling machine installs, Ying Jinhang total quality inspection, and drilling machine side is checked with measurement method Position, inclination angle, levelness and opening bit drop point are poor, it is ensured that anchor hole error in length and breadth in place of spudding in meets code requirement.Pore-forming anchor hole Gradient is 25 °, and armature boring depth error should be less than 50mm；

6, anchor cable (bar) is placed in production: before prestress anchorage cable 11 and the installation of anchor pole 12, it is to be ensured that every steel strand wires are straight, no Torsion do not pitch, arrangement uniformly, derust, degrease, to have dog leg, mechanical damage and seriously corrode pick out.Prestress anchorage cable 11 is long Degree is to count from drilling orifice, therefore steel wire length should be 11 design length of prestress anchorage cable, anchor head height, jack The summation of length, the thickness of moveable anchor and work anchor and tension operation surplus.Under normal circumstances, steel strand wires truncation surplus takes 50mm.A stringing ring is arranged along the every 1.0~1.5m of anchor cable body axis direction in steel strand anchoring section, guarantees anchor cable body protective layer thickness Not less than 20mm.11 free segment of prestress anchorage cable will apply strength anticorrosive paint, and anchor cable beam is bound every 1.0 meters with thin wire, apply Brush antirust oil, and single steel strand is covered into a PVC plastic protecting tube, butter is filled within the scope of 10~20cm of both ends, outside around work The closing of journey adhesive plaster is fixed.

6, slip casting: M40 cement mortar or cement paste are adopted in slip casting, determine coordination in works, slip casting pressure after being tested than choosing Power (grout outlet) is 1.0~1.5MPa, considers the depth displacement pressure loss (0.13~0.13) MPa/10m when slip casting at the foot of the mountain.Note Slurries should be sufficiently stirred before starching, and now stir current.When slip casting, steel pipe is connect using spiral interface with Grouting Pipe, guarantees grouting pressure. It should carry out secondary grouting in time after slurries initial set in hole to guarantee that slip casting is full, practical grouting amount is generally greater than theoretical note Slurry amount, slip casting use hole-bottom slurry-injection technique, overflow the standard that underflow terminates as slip casting using aperture slurries.

7, construction of frame beam: Vierendeel girder 8 is compression member, and the load of anchorage is transmitted to scar by it.Further, since Scar will not be vertical with 11 axis of prestress anchorage cable in ordinary circumstance lower opening, so there are also adjustment scar Impact directions for Vierendeel girder 8 Effect.It is in advance that an outer diameter is identical with bit diameter in order to keep 8 side face of Vierendeel girder vertical with 11 axis of prestress anchorage cable Thin-wall steel tube and backing plate is orthogonal welds, before pouring Combining Support of Frame Beams of Prestressed Anchor Rope, is inserted into drilling for the other end of steel pipe.

8, anchorage cable stretching locks: anchorage cable stretching locking anchor hole slip casting and 8 concrete strength of Vierendeel girder reach the 70% of design strength Shi Caineng tensioning must demarcate tensioner before tensioning, avoid the occurrence of stress error；Tensioner must be mating production Product.11 tensioning of prestress anchorage cable should tensioning step by step in two times, first time tensioning value is the 70% of total stretching force, twice tensioning interval Time should not be less than 3~5 days.To reduce stress loss, total stretching force should include ultra stretching value, ultra stretching when free segment is soil layer Value is preferably 15~25%, preferably 10~15% when free segment is rock stratum.It must to 11 stretch value of prestress anchorage cable and stress in tensioning Record must be performed, and verifies the error of actual elongation value and theoretic elongation.Stretching forces at different levels be respectively design stretching force with 25% multiple is incremented by, and every grade is spaced 2~5 minutes, afterbody interval 30 minutes.

For verifying prestress anchorage cable design, its construction technology and construction quality are verified, safe construction is instructed, should be answered in advance The test of power anchorage cable anchoring.The quantity of anchorage experiment can suitably be increased when design has particular/special requirement by 3% control of work anchor cable. Power, no less than the ultra stretching power of prestress anchorage cable are dialled in the average drawing of anchorage experiment.If average drawing dials power lower than this value, answer The quantity of anchorage experiment is supplemented in 3% ratio again.Test anchor cable must be completed before all framework anchor cables are implemented in full, so as to Designer decides whether to be adjusted.

Claims (5)

1. a kind of side slope combined bearing structure, it is characterised in that: the first rank slope supporting including being from the bottom to top in ladder setting Face (1), second-order slope branch mask (2), third rank slope branch mask (3), fourth order slope branch mask (4) and the 5th rank slope branch mask (5), first rank slope branch mask (1) and the 5th rank slope branch mask (5) are gunite concrete mask (9), and the first rank slope Branch mask (1) is fixed using anchor pole (12) drawknot, the second-order slope branch mask (2), third rank slope branch mask (3) and the 4th Rank slope branch mask (4) is including Vierendeel girder (8) and the armoured concrete slab being fixed in Vierendeel girder (8), the Vierendeel girder (8) It is fixed by prestress anchorage cable (11) drawknot.

2. side slope combined bearing structure according to claim 1, it is characterised in that: the gradient of five branch masks is equal In 1:0.2~0.5.

3. side slope combined bearing structure according to claim 1, it is characterised in that: the 5th rank slope branch mask (5) Top be provided with intercepting ditch (6), between each rank slope and bottom of slope is provided with gutter (7).

4. side slope combined bearing structure according to claim 1 or 2, it is characterised in that: first rank slope branch mask (1), second-order slope branch mask (2), third rank slope branch mask (3), fourth order slope branch mask (4) and the 5th rank slope branch mask (5) insertion is equipped with flexible porous tube (10).

5. side slope combined bearing structure according to claim 1, it is characterised in that: first rank slope branch mask (1), Second-order slope branch mask (2), third rank slope branch mask (3), fourth order slope branch mask (4) and the 5th rank slope branch mask (5) Surface, which is all made of to hang three dimensional network and sow grass seeds by duster, grass planting protective layer.