x. Report 22 TCN (Xu ly dat yeu bang bac tham).pdf Documents · 22 TCN 22 TCN Cat gia co xi mang – TCN Pham vi. 2, Direction Sign on Expressway, 22TCN 30, Design and Handling Design Process on weak ground with absorbing rush, 22 TCN 22TCN 7. Standard for soft soil treatment design with PVD. 22TCN – 8. Geo-textiles in construction of embankment on soft soil.

Author: Vukazahn Tolabar
Country: Guinea-Bissau
Language: English (Spanish)
Genre: Spiritual
Published (Last): 4 December 2017
Pages: 419
PDF File Size: 17.28 Mb
ePub File Size: 14.13 Mb
ISBN: 908-1-32661-981-7
Downloads: 83450
Price: Free* [*Free Regsitration Required]
Uploader: Nakasa

Design and Handling Design Process on weak ground with absorbing rush. If geo-textile performs as filter layer.

Each sliding piece consists of all soil layers counted from sliding surfaces upwards including buffer sand layer. Vehicle arrangement plan to determination of vehicle load on soft soil B is transverse distribution width of vehicle m determined as in figure II. Y shall not change. The projects has complied with route directions, cross-section scale, scale and location of bridges and intersections in project plan as well as in assessment 22tfn by Ministry of Transports.

If the values in Table II-1 are satisfied, it is no need to apply treatment methods for accelerating consolidation.

To check elevation at the 2444-98 of arranging settlement instruments and to measure settlement once a day in embanking and pre-loading. 22tcb — Depending on earthquake level as in Table II The former value of the above mentioned minimum height of embankment shall be applied for embankments of expressway and roads for many heavy trucks.


In case of considerable distribution of soft soil area such as lagoon area …. Sc VI-4 with meaning and 24-98 of m is as same as in VI.


This standard shall defines all regulations on topography survey, investigation and geotechnical test of the soft ground crossed by the route; as well as other requirements and 22cn satisfied on designing embankment on the soft ground by the equivalent formation and calculation methods and alternatives and applicable scope of these methods for embankment work on the soft ground except the other special methods such as soft ground treatment by penetration electricity, limestone piles, cement piles, concrete piles, and sand piles, etc….

Geo-textile shall be horizontally laid perpendicular to alignment and overlapped at least 0.

[PDF] 22TCN _En, 22 TCN –

24498 4 of 40 surveying or carefully calculating. Berm width on each side should exceed scope of the most dangerous displacement curve from m the most dangerous displacement curve shall be calculated in accordance with the method described in V.

Depth alternative must satisfy requirements given in IV-4a and IV-4b. IV — 4b as follows: Expressway and highway class 80 2. Settlement monitoring regulations 424-98 be stipulated in design: Berm height shall not be too big so not to cause in swelling displacement instability for berm embankment itself.

Investigation quantity is an additional one for on-going technical design stage. If the covering layer is m.

Trung Luong – My Thuan Expressway Stage 1 – Implementing project

Technical survey for pile foundation design and construction. Width of sliding piece di shall not be more 222tcn 2m and length of sliding curve within each piece l i must be located on the same soil layer. Hang upon the formation causes, soft soil may become from mineral or organic matters.

Highway — Require standard design for side roads, frontage road, linking road to expressway. It is advised to use sand piles with mm diameter arranged alternatively with the interval equally to folds of sand pile diameter.


Dimension of number used in the Figure is stated in m. If results of mathematical model satisfies the requirements stated in II. In preparation of technical design and detailed design stage. Transverse 22ctn Uh is determined as follows: Consolidation obtained depending on Tv.

Minimum dimension of settlement instruments is 50cm x 50cm with thickness of 3cm or more. Viscosity of the soil type is stable.

Geological Survey and stabilizing method design Process of road foundation with slide act and collapse. Vertical consolidated drainage method is normally adopted when soft soil layer is thick its thickness is excessive to width of embankment bottom and embankment ground is high.

22 TCN 246-98 x

If embankment and berm are done at the same time. Based on the monitoring results. L is equal to the depth of PBDs.

If using mathematical models available on computer. Calculation of stability by determining shear strength as the abovementioned calculation only serves design alternatives. The conditions IV-4a and IV-4b shall be satisfactory 24-498 every depth z within embankment bottom down completely to depth of sand piles or PBD installation.

Page 30 of Page 18 of Assessing process on environment effects on project and design. Requirements on topographical survey III. Decision 22tdn depth of sand drain or PBD is an economic-technical issue that requires designer to take it in consideration.

To be base for proposal of design alternatives.